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INTRODUCTION: Cardiovascular disease represents the foremost cause of death among chronic and non-transmissible diseases. Diagnostic tools commonly used for peripheral and carotid atherosclerosis, such as ankle-brachial index (ABI) and carotid ultrasonography (CU), may contribute as surrogates for the diagnosis of coronary arterial disease (CAD). MATERIAL AND METHODS: We report a cross-sectional study of 50 patients referred to elective invasive coronary angiography (ICA). Patients were submitted to ABI and CU-for carotid intima-media thickness (CIMT) and carotid atherosclerotic plaque screening (CAPS). Clinical and demographic variables were also evaluated. CAD was defined as greater than 50% stenosis in at least one coronary artery. RESULTS: In logistic regression analysis, only CAPS showed a statistically significant area under the curve (AUC) for CAD prediction: 0.812 (95% CI, p <0.001). ABI and CIMT did not show statistically significant performance. For multivariate logistic regression analysis, the model including variables "gender," "dyslipidemia," "smoking," "pack-years," and CAPS predicted CAD better. The AUC for this model was 0.912 (95% CI, p = 0.002). CONCLUSION: The screening for carotid atherosclerotic plaques may enhance traditional risk stratification strategies for CAD. Longitudinal studies and bigger samples of subject are needed to allow extrapolation of our findings.

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Background: Revascularization surgery is used to attempt to restore blood flow to the foot in patients with critical ischemia (CI) caused by peripheral arterial occlusive disease of the lower limbs (LL). Ultrasonography with Doppler (USD) SAH emerged in recent years as a highly valuable method for planning this surgical intervention. Objectives: To evaluate the relationship between the resistance index (RI), measured with USD, and immediate hemodynamic success of LL revascularization surgery in patients with CI. Methods: The study design was a prospective cohort assessing 46 patients with LL CLI who underwent operations to perform infrainguinal revascularization by angioplasty or bypass from August 2019 to February 2022. All patients underwent preoperative clinical vascular assessment with USD including measurement of the RI of distal LL arteries, LL arteriography, and measurement of the ankle-brachial index (ABI). All patients had their ABI measured again in the immediate postoperative period. Results: Forty-six patients were assessed, 25 (54.3%) of whom were male. Age varied from 32 to 89 years (mean: 67.83). Hemodynamic success was assessed by comparison of preoperative and postoperative ABI, showing that hemodynamic success was achieved in 31 (67.4%) patients after revascularization surgery (ABI increased by 0.15 or more). A positive correlation (p ≤ 0.05) was observed between the RI of the distal revascularized LL artery and immediate hemodynamic success assessed by ABI (lower RI and hemodynamic success). Conclusions: This study observed a positive correlation between the resistance index of the distal artery and immediate hemodynamic success of lower limb revascularizations, as assessed by the ankle-brachial index, so that the lower the RI the greater the hemodynamic success achieved.

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Ethnic differences exist in the United States in the interrelated problems of diabetes (DM), peripheral arterial disease (PAD), and leg amputations. The purpose of this study was to determine the prevalence and risk factor associations for subclinical PAD in a population sample of Mexican Americans using the ankle brachial (ABI) index. The ABI-High (higher of the two ankle pressures/highest brachial pressure) and ABI-Low (lower of the two ankle pressures/highest brachial pressure) were calculated to define PAD. Toe brachial index (TBI) was also calculated. 746 participants were included with an age of 53.4 ± 0.9 years, 28.3 % had diabetes mellitus (DM), 12.6 % were smokers, and 51.2 % had hypertension (HTN). Using ABI-High ≤ 0.9, the prevalence of PAD was 2.7 %. This rose to 12.7 % when an ABI-Low ≤ 0.9 was used; 4.0 % of the population had an ABI-High > 1.4. The prevalence of TBI < 0.7 was 3.9 %. DM was a significant risk factor for ABI-High ≤ 0.9 and ABI-High > 1.4, and TBI < 0.7. Increased age, HTN, smoking was associated with ABI-High ≤ 0.9, while being male was associated with ABI-High > 1.4. Increased age, smoking, and lower education were all associated with abnormal TBI. Despite relatively younger mean age than other studied Hispanic cohorts, the present population has a high burden of ABI abnormalities. DM was a consistent risk factor for PAD. These abnormalities indicate an important underlying substrate of vascular and metabolic disease that may predispose this population to the development of symptomatic PAD and incident amputations.

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Resumo Contexto A cirurgia de revascularização é proposta para restaurar o fluxo sanguíneo para o pé nos casos de isquemia crítica (IC) devido a doença arterial obstrutiva periférica dos membros inferiores (MMII). O uso de ultrassonografia com Doppler (USD) vem despontando nos últimos anos como um método de grande valor para o planejamento cirúrgico dessa intervenção. Objetivos Avaliar a relação entre o índice de resistência (IR), mensurado por meio de USD, e o sucesso hemodinâmico imediato da cirurgia de revascularização dos MMII em pacientes com IC. Métodos O tipo de estudo empregado foi a coorte prospectiva, na qual foram avaliados 46 pacientes portadores de IC dos MMII submetidos à operação de revascularização infrainguinal por angioplastia ou em ponte de agosto de 2019 a fevereiro de 2022. Todos os pacientes foram submetidos à avaliação clínica vascular, à USD com medida do IR das artérias distais dos MMII, à arteriografia dos MMII e à aferição do índice tornozelo-braquial (ITB) no período pré-operatório. No pós-operatório imediato, todos os pacientes foram submetidos à nova aferição do ITB. Resultados Entre os 46 pacientes avaliados, 25 (54,3%) eram do sexo masculino. A idade variou de 32 a 89 anos (média de 67,83). Quanto ao sucesso hemodinâmico, avaliado pela comparação do ITB pré e pós-operatório, constatou-se que 31 (67,4%) pacientes apresentaram sucesso hemodinâmico após cirurgia de revascularização (aumento do ITB em 0,15 ou mais). Foi observada correlação positiva (p ≤ 0,05) entre o IR da artéria distal revascularizada do MMII e o sucesso hemodinâmico imediato avaliado pela aferição do ITB (IR menor e sucesso hemodinâmico). Conclusões Na presente pesquisa foi observada uma correlação positiva entre o índice de resistência arterial distal e o sucesso hemodinâmico nas revascularizações dos membros inferiores, avaliada através do índice tornozelobraquial, de forma que, quanto menor foi o IR, maior o sucesso hemodinâmico obtido.

Abstract Background Revascularization surgery is used to attempt to restore blood flow to the foot in patients with critical ischemia (CI) caused by peripheral arterial occlusive disease of the lower limbs (LL). Ultrasonography with Doppler (USD) SAH emerged in recent years as a highly valuable method for planning this surgical intervention. Objectives To evaluate the relationship between the resistance index (RI), measured with USD, and immediate hemodynamic success of LL revascularization surgery in patients with CI. Methods The study design was a prospective cohort assessing 46 patients with LL CLI who underwent operations to perform infrainguinal revascularization by angioplasty or bypass from August 2019 to February 2022. All patients underwent preoperative clinical vascular assessment with USD including measurement of the RI of distal LL arteries, LL arteriography, and measurement of the ankle-brachial index (ABI). All patients had their ABI measured again in the immediate postoperative period. Results Forty-six patients were assessed, 25 (54.3%) of whom were male. Age varied from 32 to 89 years (mean: 67.83). Hemodynamic success was assessed by comparison of preoperative and postoperative ABI, showing that hemodynamic success was achieved in 31 (67.4%) patients after revascularization surgery (ABI increased by 0.15 or more). A positive correlation (p ≤ 0.05) was observed between the RI of the distal revascularized LL artery and immediate hemodynamic success assessed by ABI (lower RI and hemodynamic success). Conclusions This study observed a positive correlation between the resistance index of the distal artery and immediate hemodynamic success of lower limb revascularizations, as assessed by the ankle-brachial index, so that the lower the RI the greater the hemodynamic success achieved.

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INTRODUCTION: Evaluation of limb hemodynamics using the ankle-brachial index (ABI) may be difficult due to skin lesions, extensive necrosis, and obesity, such as commonly present in patients with diabetes with chronic limb-threatening ischemia (CLTI). We hypothesized that the pedal acceleration time (PAT) correlates with ABI and Wound, Ischemia, and foot Infection (WIfI) scores in patients with diabetes to serve as a new modality to accurately stage CLTI. METHODS: A single-center, cross-sectional study included patients with and without diabetes > 18 years with CLTI. Limbs were categorized in three grades of ischemia based on the ABI (ABI < 0.8, < 0.6, and < 0.4) and in two classes based on WIfI stages of amputation risk. Receiver operator characteristic (ROC) curves were used to determine PAT sensitivity, specificity, and accuracy to predict lower-limb ischemia. RESULTS: A total of 141 patients (67 nondiabetic and 74 diabetic) and 198 lower limbs (94 nondiabetic and 104 diabetic) met the inclusion criteria. In patients without diabetes, the accuracy of PAT for detecting an ABI < 0.8 was 85%; for detecting an ABI < 0.6 was 85%; and for detecting an ABI < 0.4 was 87%. In patients with diabetes, the accuracy of PAT in detecting an ABI < 0.8 was 91%; for detecting an ABI < 0.6 was 79%; and for detecting an ABI < 0.4 was 88%. In patients without diabetes, the accuracy for detecting WIfI stages of moderate and high amputation risk was 77% and for patients with diabetes was also 77%. CONCLUSIONS: PAT shows high correlation with the ABI as well as with the WIfI stages of amputation risk and the grades of ischemia, with high accuracy.

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Introducción: la medición del índice tobillo-brazo (ITB) es una prueba de primera línea y con alta precisión diagnóstica para detectar la enfermedad vascular periférica (EVP). El método Doppler, considerado el estándar de oro, requiere del dispositivo y de un operador capacitado, lo que limita su uso en la atención primaria. Como alternativa, un método oscilométrico que emplea un dispositivo de presión arterial automático es una prueba simple y accesible que podría minimizar los sesgos del observador y eliminar la necesidad de capacitación especial. Objetivos: validar la capacidad diagnóstica de un dispositivo oscilométrico automatizado frente al método Doppler para la medición del ITB. Materiales y métodos: se incluyeron pacientes con diabetes mellitus tipo 1 y 2 (DM1 y DM2), mayores de 50 años, con uno o más factores de riesgo cardiovascular. Luego de que los pacientes permanecieran 5 minutos acostados, se registró la presión arterial sistólica (PAS) con tensiómetro Welch Allyn DS 45-11 y Doppler Vascular Contec Sonoline B 8 Mhz en ambas arterias tibiales posteriores y en arteria braquial derecha. Posteriormente se realizaron los mismos registros con monitor de presión arterial automático modelo Omrom HEM-7130. Se calculó el ITB de cada miembro inferior y las capacidades diagnósticas (sensibilidad [S-, especificidad [E], concordancia por coeficiente kappa, valor predictivo positivo [VPP] y valor predictivo negativo [VPN]) del método oscilométrico para detectar un ITB patológico por Doppler (≤0,90). Resultados: se evaluaron 66 pacientes, 52 varones y 14 mujeres, 7 con DM1 y 59 con DM2, 69 años de edad (DS 9,8), con una antigüedad de la DM de 18,05 años (DS 12,01). La prevalencia de EVP detectada por Doppler (ITB ≤0,90) fue del 16,7% (IC 95% 9,9-23,4). El método oscilométrico para detectar un ITB ≤0,90 por Doppler mostró una S del 72,7% (IC 95% 51,8-93,6), una E del 96,3% (IC 95% 92,4-100), una concordancia del 92,4% (IC 95% 87,5-97,3), un VPP del 80,0% (IC 95% 59,9-100) y un VPN del 94,6% (IC 95% 90,0-99,3). Conclusiones: el alto VPN hallado (condición esencial para un método de screening) significa que si el método oscilométrico da un ITB >0,90, hay un 94,6% de posibilidad de que el ITB por Doppler no sea ≤0,90. El VPP de 80% encontrado significa que si el ITB oscilométrico es ≤0,90, hay un 80% de posibilidad de que el ITB Doppler sea verdaderamente ≤0,90. Por lo tanto, consideramos que la simple medición del ITB con el método oscilométrico podría recomendarse en la atención primaria, donde se requieren métodos rápidos, fáciles y confiables.

Introduction: the measurement of the ankle-brachial index (ABI) is a first-line test with high diagnostic accuracy for the detection of peripheral vascular disease. The Doppler method, considered the gold standard, requires the device and a trained operator, which limits its use in primary care. Alternatively, an oscillometric method using an automated blood pressure device is a simple and affordable test that could minimize observer bias and eliminate the need for special training. Objectives: to validate the diagnostic capacity of an automated oscillometric device against the Doppler method for ABI measurement. Materials and methods: diabetes mellitus type 1 and 2 (DM1 and DM2) patients older than 50 years with 1 or more cardiovascular risk factors were included. After 5 minutes lying down, SBP was recorded with a Welch Allyn DS 45-11 sphygmomanometer and Contec Sonoline B 8 Mhz Vascular Doppler in both posterior tibial arteries and in the right brachial artery. Subsequently, the same recordings were made with an Automatic Blood Pressure Monitor Model Omrom HEM-7130. The ABI of each lower limb and the diagnostic capabilities (sensitivity [S], specificity [E], concordance by kappa coefficient, positive predictive value [PPV] and negative predictive value [NPV] of the oscillometric method to detect a pathological ABI were calculated by Doppler (≤0.90). Results: 66 patients were evaluated, 52 men and 14 women, 7 DM1 and 59 DM2, 69 years old (SD 9.8) with a history of diabetes of 18.05 years (SD 12.01). The prevalence of PVD detected by Doppler (ABI ≤0.90) was 16.7% (95% CI 9.9-23.4). The oscillometric method to detect an ABI ≤0.90 by Doppler showed an S of 72.7% (95% CI 51.8-93.6), an E of 96.3% (95% CI 92.4-100), a concordance of 92.4% (95% CI 87.597.3), a PPV of 80.0% (95% CI 59.9-100) and a NPV of 94.6% (95% CI 90 .0-99.3). Conclusions: the high NPV found (essential condition for a screening method) means that if the oscillometric method gives an ABI >0.90, there is a 94.6% chance that the Doppler ABI is not ≤0.90. The PPV of 80% found means that if the oscillometric ABI is ≤0.90, there is an 80% chance that the Doppler ABI is truly ≤0.90. Therefore, we consider that the simple measurement of ABI with the oscillometric method could be recommended in primary care, where fast, easy and reliable methods are adequate.

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Assessment of ischaemia severity includes a variety of measures, such as pedal pulse palpation, the ankle/brachial index (ABI), and the toe/brachial index (TBI), but there is a lack of consensus regarding which ischaemia scale is the most effective for determining outcome prognosis. The purpose of this study is to validate the application of the ischaemia severity scale (ISS) in the effective prediction of wound healing, amputations, and mortality for diabetic foot wounds (DFW). This prospective study included 235 consecutive patients graded according to the Saint Elian Wound Score System (SEWSS). The ISS is part of this system, with patients being scored as non-ischaemic (0) or having mild (1), moderate (2), or severe (3) ischaemia. Age, diabetes duration in years, and ulcer size were found to be associated with a longer mean ischaemia of increasing severity. A trend of reduction in the pulse palpation rates (70.4%, 50%, 8.5% to 0%; p < 0.01), ABI (1.1 ± 0.1, 0.86 ± 0.3, 0.68 ± 0.2, 0.47 ± 0.2, p < 0.01), TBI average values (0.90 ± 0.35, 0.62 ± 0.52, 0.50 ± 0.33, 0.10 ± 0.42, p < 0.01), wound healing success (88.7%, 57.7%, 40.7%, 12.9%; p < 0.01), and delay in weeks (Kaplan−Meier: log-rank 44.2, p < 0.01) was observed with increasing values of the ISS (0, 1, 2, and 3). The odds ratio for adverse outcomes increased for each additional level of ischaemia severity. Thus, we demonstrate that the ISS is useful in effectively predicting adverse outcomes for DFW.

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Introducción: La diabetes mellitus es la enfermedad crónica considerada como una de las mayores emergencias sanitarias del siglo XXI en el mundo, que puede desencadenar algunas complicaciones y problemas graves para la salud. Objetivo: Caracterizar a pacientes diabéticos con enfermedad arterial crónica en miembros inferiores según variables clínicas, hemodinámicas y ecográficas. Métodos: Se realizó un estudio observacional, descriptivo y transversal de los 178 pacientes diabéticos con diagnóstico clínico de enfermedad arterial crónica en miembros inferiores, quienes fueron atendidos en el Servicio de Imagenología del Hospital General Docente Dr. Juan Bruno Zayas Alfonso de Santiago de Cuba desde enero de 2017 hasta diciembre de 2019, a los cuales se les realizó examen hemodinámico mediante el índice tobillo-brazo y ecografía Doppler arterial. Resultados: En la investigación primaron los adultos mayores (41,6 %) del sexo femenino (54,0 %), la claudicación intermitente como principal síntoma (57,3 %), el sector femoropoplíteo (34,8 %) según la topografía exacta de las lesiones, así como la estenosis significativa (53,9 %) y la enfermedad arterial periférica moderada (58,3 %). Conclusiones: La mayoría de los pacientes presentó una estenosis significativa detectada por ecografía Doppler, en correspondencia con el diagnóstico de enfermedad arterial periférica moderada por el índice tobillo-brazo. La ecografía Doppler también aportó la topografía exacta de las lesiones.

Introduction: The diabetes mellitus is the chronic disease considered as one of the highest sanitary emergencies in the XXI century in the world that can trigger some complications and serious health problems. Objective: To characterize diabetic patients with arterial chronic disease in lower limbs according to clinical, hemodynamic and ultrasound variables. Methods: An observational, descriptive and cross-sectional study of the 178 diabetic patients with clinical diagnosis of arterial chronic disease in lower limbs was carried out, who were assisted in the Imaging Service of Dr. Juan Bruno Zayas Alfonso General Hospital in Santiago de Cuba from January, 2017 to December, 2019, to whom hemodynamic exam by means of the ankle-brachial index and arterial Doppler ultrasound was carried out. Results: In the investigation there was a prevalence of the elderly (41.6 %) from the female sex (54.0 %), the intermittent abandonment as main symptom (57.3 %), the femoropopliteal sector (34.8 %) according to the exact topography of the lesions, as well as the significant stenosis (53.9 %) and the moderate peripheral arterial disease (58.3 %). Conclusions: Most of the patients presented a significant stenosis according to Doppler ultrasound, in correspondence with the diagnosis of moderated peripheral arterial disease by the ankle-brachial index. The Doppler ultrasound also contributed the exact topography of the lesions.

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OBJECTIVE: Abnormal ankle-brachial index (ABI) determinations may be associated with an increased risk of incident strokes. However, the impact of previous strokes in this relationship is unknown. We estimated the role of previous strokes on the association between abnormal ABI determinations and incident stroke risk in community-dwelling older adults. METHODS: Atahualpa residents aged ≥60 years received ABI determinations, cardiovascular risk factors assessment, and brain MRIs. ABIs were classified as abnormal if ≤0.9 or ≥1.4. Incident strokes were diagnosed by a certified neurologist with the aid of a post-event MRI. Poisson regression models were fitted to estimate stroke incidence rate ratio (IRR) according to categories of ABI. RESULTS: Analysis included 389 participants (mean age: 68.2 ± 8.1 years). Eighty-six persons (22%) had abnormal ABI determinations. Incident strokes occurred in 38 (9.8%) individuals after a mean follow-up of 6.1 ± 1.9 years. Abnormal ABIs were associated with incident strokes in unadjusted analyses (p = 0.002) as well as in a Poisson regression model adjusted for demographics and clinical covariates (IRR: 2.57; 95% C.I.: 1.29-5.13), but not when the model was adjusted for neuroimaging covariates (IRR: 1.46; 95% C.I.: 0.67-3.20). Interaction models showed that having both abnormal ABI and non-lacunar strokes at baseline made the individual 9.7 times more likely to have an incident stroke (95% C.I.: 3.87-24.4). The risk was reduced to 2.2 (95% C.I.: 0.96-5.13) for those who only had an abnormal ABI. CONCLUSIONS: An abnormal ABI is associated with a doubling the risk of incident strokes, but its importance is superseded by history of non-lacunar strokes.

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Objetivo : Evaluar la relación entre control metabólico y enfermedad arterial periférica (EAP) en pacientes con diabetes mellitus tipo 2 (DM2) del hospital María Auxiliadora (HMA). Material y métodos : Estudio caso-control pareado para sexo, de un análisis secundario basado en datos del servicio de endocrinología del HMA, Lima-Perú. Los casos con EAP, fueron aquellos con índice tobillo-brazo (ITB) < 0,9. Los controles fueron aquellos con ITB entre 0,9 y 1,3 en una relación 4:1 con respecto a los casos. Se definió como mal control metabólico si presentaron al menos uno de las siguientes: hemoglobina glicosilada ≥ 7 %, presión arterial sistólica ≥ 140 mm Hg, presión arterial diastólica ≥ 90 mm Hg, colesterol HDL< 40 mg/dl (varón) o < 50 mg/dl (mujer), colesterol LDL ≥ 100 mg/dl y triglicéridos ≥ 150 mg/dl. Se calculó el Odds ratio (OR) de mal control metabólico, tanto crudo como ajustado, según presencia de EAP mediante regresión logística. Resultados : Incluimos a 39 casos y 157 controles. Un 94,9 % y 82,2 % de los casos y controles presentaron mal control metabólico respectivamente (p<0,05). Al ajustar a edad, tiempo de diabetes, índice de masa corporal y antecedente de tabaco, los pacientes con mal control metabólico presentaron un OR de 5,45; (IC 95 % 1,17 - 25,2); p=0,030 de presentar enfermedad arterial periférica definido por ITB<0,9. Conclusión : El mal control metabólico presenta una relación independiente con EAP en pacientes con DM2 del Hospital María Auxiliadora. Metas terapéuticas centradas solo en la glicemia, elevarían la carga de enfermedad de complicaciones macrovasculares.

Objective : To assess the relationship between metabolic control and peripheral arterial disease (PAD) in patients with type 2 diabetes mellitus (DM2) in Maria Auxiliadora Hospital (MAH). Material and methods : This is a sex-matched case control study with a secondary analysis based on data from the endocrinology service of MAH, Lima, Peru. Cases with PAD were defined as those with 50 mg/dL (females), LDL cholesterol ≥100 mg/dL and triglycerides ≥150 mg/dL. Odds ratio values for poor metabolic control were calculated, both crude and adjusted, according to the presence or PAD, by using logistic regression. Results : We included 39 cases and 157 controls. A great majority of cases (94.9%) and of controls (82.2%) had poor metabolic control, respectively (p<0.05). When adjusting for age, time with diabetes, body mass index, and history of tobacco use, patients with poor metabolic control had OR at 5.45 (95% CI: 1.17 - 25.2) and p= 0.030 for having peripheral arterial disease, as defined by ATAI <0.9. Conclusion : Poor metabolic control showed and independent relationship with PAD in DM2 patients in Maria Auxiliadora Hospital. If therapy was only centered in glycemic control, it would increase the burden of disease of macrovascular complications.

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Introdução: a doença arterial obstrutiva periférica (DAOP) tem alta prevalência na população em geral e está associada a elevado risco de eventos cardiovasculares. O índice tornozelo-braquial (ITB), é um exame simples e não invasivo, com alta sensibilidade e especificidade no diagnóstico de DAOP. A patologia pode estar associada a diversos fatores de risco, entre eles a doença renal crônica terminal. Contudo, os dados que avaliam sua prevalência e fatores de risco na população de doentes renais crônicos são escassos. Objetivos: Determinar a prevalência e os fatores de risco da doença arterial obstrutiva periférica em pacientes com insuficiência renal crônica dialítica. Metodologia: trata-se de um estudo transversal, que analisou 117 pacientes com doença renal dialítica. Foram avaliados através de um questionário para identificação dos fatores de risco e submetidos ao teste do ITB, sendo considerado diagnóstico de DAOP quando ITB <0,9. Resultados: o presente estudo evidenciou uma prevalência de DAOP em 11% dos pacientes, sendo 10 classificados como DAOP leve e 3 como moderada. Não foram encontrados pacientes com DAOP severa. Entretanto, 54 pacientes (46,2%) apresentaram rigidez de parede vascular. Assim, foi possível verificar que 67 (57,3%) pacientes apresentaram o ITB alterado. Conclusão: a alta prevalência de DAOP em pacientes com doença renal crônica dialíticafoi análoga ao encontrado por outros autores. É importante ressaltar que pacientes com ITB > 1,3 podem gerar resultados falsos-negativos no diagnóstico de DAOP. Devido a isso, a prevalência pode estar subestimada, o que sugere que o ITB nesses pacientes deve ser avaliado com mais atenção.

Background: peripheral arterial disease (PAD) has a high prevalence in the general population and is associated with a high risk of cardiovascular events. The ankle-brachial index (ABI) is a simple noninvasive exam with high sensitivity and specificity in the diagnosis of PAD. Pathology may be associated with several risk factors, including terminal chronic kidney disease. However, data assessing their prevalence and risk factors in the chronic kidney disease population are scarce. Objectives: to determine the prevalence and risk factors of peripheral arterial disease in patients with dialytic chronic renal failure. Methods: this is a cross-sectional study that analyzed 117 patients with dialytic kidney disease. They were evaluated through a questionnaire to identify risk factors and were submitted to the ABI test, being considered a diagnosis of PAD when ABI <0.9. Results: the present study showed a prevalence of PAD in 11% of the patients, 10 classified as mild and 3 as moderate. No patients with severe PAD were found. However, 54 patients (46.2%) had vascular wall stiffness. Thus, it was possible to verify that 67 (57.3%) patients presented altered ABI. Conclusion: the high prevalence of PAD in patients with dialytic chronic kidney disease was similar to that found by other authors. It is important to highlight that patients with ABI> 1.3 may generate false negative results in the diagnosis of PAD. Because of this, the prevalence may be underestimated, suggesting that ABI in these patients should be evaluated more carefully.

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BACKGROUND: Congenital Generalized Lipodystrophy (CGL) is an ultra-rare disease characterized by metabolic disorders. However, the evaluation of functional exercise capacity, cardiovascular (CV) response to exercise, and peripheral arterial disease (PAD) in CGL is scarce. Here we evaluated the performance and CV response to exercise and their association with PAD in CGL compared to healthy individuals. METHODS: Twelve CGL and 12 healthy subjects matched for age and gender were included. Functional exercise capacity, CV response, and PAD were measured using the six-minute walk test (6MWT) and ankle-brachial index (ABI), respectively. RESULTS: At baseline, CGL subjects showed reduced predicted walked distance (6MWD) (p = 0.009) and increased heart rate (HR), systolic (SBP), and diastolic (DBP) pressures compared to healthy subjects (p < 0.05). Most CGL subjects presented normal ABI values (1.0 ≤ ABI ≤ 1.4). Only 25% (n = 3) had ABI ≤ 0.9. CGL subjects did not present changes in ABI and blood pressure 12 months after metreleptin (MLP) replacement, but they walked a greater 6MWD than baseline (p = 0.04). Further, 6MWD and right ABI measurements were positively correlated in CGL subjects (p = 0.03). Right ABI negatively correlated with glucose, triglycerides, and VLDL-c (p < 0.05). CONCLUSIONS: We observed that CGL subjects had lower functional exercise capacity and higher cardiovascular effort for similar performance of 6MWT, suggesting that strategies for decreasing exercise effort in this population should be essential. Furthermore, better physical performance was associated with high ABI in CGL. Additional studies are needed to clarify leptin's role in preserving functional exercise capacity in CGL.

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BACKGROUND: Little is known about the evolution of peripheral arterial disease (PAD) since diagnosis and its association with glycemic and lipid control in patients with Type 2 Diabetes Mellitus (T2DM). OBJECTIVE: Evaluate the actual criteria to start screening PAD with ankle-brachial index (ABI) in T2DM patients and assess its progression and relationship with glycemic and lipid control since diagnosis. METHODS: We performed a 3-year prospective cohort study with two groups: group 1 (978 individuals with T2DM undergoing drug treatment) and group 2 [221 newly diagnosed drug-naive (< 3 months) patients with T2DM]. PAD diagnosis was by ABI ≤ 0.90, regardless any symptoms. RESULTS: As expected, abnormal ABI prevalence was higher in group 1 vs. Group 2 (87% vs. 60%, p < 0.001). However, abnormal ABI prevalence did not differ between patients over and under 50 years in both groups. Our drug-naive group stabilizes ABI (0.9 ± 0.1 vs 0.9 ± 0.1, p = NS) and improved glycemic and lipid control during follow-up [glycated hemoglobin (HbA1c) = 8.9 ± 2.1 vs 8.4 ± 2.3%, p < 0.05; LDL = 132 ± 45 vs 113 ± 38 mg/dL, p < 0.01, respectively]. When compared, patients who evolved with normalization or maintained normal ABI levels at the end [Group A, N = 60 (42%)] with those who decreased ABI to abnormal levels (ABI basal 1.0 ± 0.1 vs final 0.85 ± 0.1, p < 0.001) [Group B, N = 26 (18%)], an improvement in HbA1c (9 ± 2 vs 8 ± 2%, p < 0.05) and a correlation between the final HbA1c with ABI (r = - 0.3, p = 0.01) was found only in the first. In addition, a correlation was found between albuminuria variation and ABI solely in group A (r = - 0.3; p < 0.05). CONCLUSION: Our study suggests that ABI should be measured at diagnosis in T2DM patients, indicating that current criteria to select patients to screen PAD with ABI must be simplified. An improvement in albuminuria and glycemic and lipid control could be related with ABI normalization in newly diagnosed T2DM drug-naive patients.

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Patients with type 1 diabetes (T1D) have a higher risk of developing cardiovascular disease (CVD), which is a major cause of death in this population. This study investigates early markers of CVD associated with clinical data and autosomal ancestry in T1D patients from an admixed Brazilian population. A cross-sectional study was conducted with 99 T1D patients. The mean age of the study sample was 27.6 years and the mean duration of T1D was 14.4 years. The frequencies of abnormalities of the early markers of CVD were 19.6% in the ankle-brachial index (ABI), 4.1% in the coronary artery calcium score (CACS), and 5% in the carotid Doppler. A significant percentage of agreement was observed for the comparison of the frequency of abnormalities between CACS and carotid Doppler (92.2%, p = 0.041). There was no significant association between the level of autosomal ancestry proportions and early markers of CVD. The ABI was useful in the early identification of CVD in asymptomatic young patients with T1D and with a short duration of disease. Although CACS and carotid Doppler are non-invasive tests, carotid Doppler is more cost-effective, and both have limitations in screening for CVD in young patients with a short duration of T1D. We did not find a statistically significant relationship between autosomal ancestry proportions and early CVD markers in an admixed Brazilian population.

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The objective of this study was to evaluate a measure of the responsiveness and reliability of the pulse volume recording upstroke ratio (PVRr). A database of 389 subjects undergoing lower extremity revascularization was analyzed. Subjects were included in the analysis if they had undergone pedal radiographs, had PVRs performed pre- and postlower extremity revascularization, and had regular pulsatile digital waveforms with a pressure recording on both PVRs. The responsiveness of the PVRr was assessed by means of the postoperative percent change in comparison to the digital pressures. A statistically significant negative correlation was observed (Pearson -0.421; p = .007) indicating that as digital pressures increased, the PVRr decreased. Further, measurement of the reliability of the PVRr was performed on a selection of 10 recordings by 2 residents and 3 board-certified surgeons. The observed intraclass correlation coefficient of measurements was 0.960. Results of this investigation provide evidence in support of the responsiveness and inter-rater reliability in the calculation of the pulse volume recording upstroke ratio.

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OBJECTIVES: To correlate the ankle-brachial index and photographic thermography findings in patients with peripheral arterial disease. METHODS: Photographic thermography was performed at the foot level, and ankle-brachial index was measured in 72 lower limbs of 53 patients with peripheral arterial disease who were divided into calcified artery, patients with an ankle-brachial index greater than 1.4; and non-calcified artery classified as asymptomatic, mild, moderate, and severe on the basis of peripheral arterial disease severity. Fisher's exact test was used for categorical data, and Wilcoxon test was used for numerical data. RESULTS: Spearman's correlation analysis showed a strong correlation (R = 0.7) between the ankle-brachial index and the mean plantar temperature in patients without lower limb artery calcification. Linear regression yielded the predictor equation Y = 3.296 × X + 29.75, wherein ankle-brachial index (X) can be predicted on the basis of temperature values. Spearman's correlation test showed no significance (p = 0.2174) in patients with arterial calcification. Kruskal-Wallis test with post hoc analysis using Dunn's test for multiple comparisons showed that the mean plantar temperature was lower in patients with arterial calcification. CONCLUSION: Photographic thermography findings show a strong correlation with ankle-brachial index in patients with non-calcified arteries.

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The NEPHROS is a randomized controlled trial which applied a 16-week aerobic and resistance training to patients with chronic kidney disease (CKD) and high blood pressure. This report describes a long-term post-trial follow-up, comparing survival, health-related quality of life (HRQoL), and estimated glomerular filtration rate (GFR) change between the intervention and control groups according to in-trial cardiovascular risk factors. Three years after the original trial, NEPHROS participants were re-evaluated. Cox proportional hazards model was used to compare survival time and linear regression for changes in GFR and physical and mental HRQoL summary scores between intervention and control groups according to age, sex, and in-trial GFR, C-reactive protein, glucose, lipids, ankle-brachial index (ABI), functional capacity, and blood pressure. Of the 150 participants of NEPHROS, 128 were included in the long-term analysis. The previous exercise training had no effects on survival, GFR, or HRQoL. Baseline in-trial GFR (HR = 0.95, 95%CI: 0.92; 0.98) and ABI (HR = 0.03, 95%CI: 0.002; 0.43) were positive independent predictors for survival. Lower ABI (coefficient = 9.00, 95%CI: 0.43; 17.5) and higher systolic blood pressure (coefficient = -0.13, 95%CI: -0.24; -0.03) were independent predictors for GFR decline. A 16-week exercise program had no long-term effect on survival, quality of life, or glomerular filtration in patients with CKD stages 2 to 4. Lower GFR and ABI and higher systolic blood pressure were associated with poorer prognosis among CKD patients.

O estudo NEPHROS é um ensaio controlado e randomizado que aplicou um programa de treinamento aeróbico e de força com duração de 16 semanas em pacientes com doença renal crônica e hipertensão arterial. O artigo descreve o seguimento pós-ensaio de longo prazo, comparando sobrevida, qualidade de vida relacionada à saúde (HRQoL) e mudança na taxa de filtração glomerular estimada (TFGe) entre o grupo de intervenção e o grupo controle, e de acordo com fatores de risco cardiovascular registrados durante o ensaio. Os participantes do estudo NEPHROS foram reavaliados três anos depois do ensaio original. Foi usada a razão de riscos proporcionais de Cox para comparar o tempo de sobrevida, e a regressão linear para comparar a mudança na TFGe e as pontuações gerais de HRQoL física e mental, entre os grupos de intervenção e controle, de acordo com idade, sexo e níveis durante o ensaio original de TFGe, proteína C-reativa, glicose, lipídios, índice tornozelo-braquial (ITB), capacidade funcional e pressão arterial. Entre os 150 participantes do NEPHROS, 128 foram incluídos na análise de seguimento. Não foi observado nenhum efeito do treinamento na sobrevida, TFGe ou HRQoL. As medidas durante o ensaio original de TFGe (HR = 0,95; IC95%: 0,92; 0,98) e ITB (HR = 0,03; IC95%: 0,002; 0,43) foram preditores positivos independentes de sobrevida. ITB mais baixo (coeficiente = 9,00; IC95%: 0,43; 17,5) e pressão sistólica mais alta (coeficiente = -0,13; IC95% -0,24; -0.03) foram preditores independentes de declínio da TFGe. O programa de exercício de 16 semanas não teve efeito no longo prazo sobre sobrevida, qualidade de vida ou mudança na taxa de filtração glomerular em pacientes com doença renal crônica de estágios 2 a 4. Níveis mais baixos de TFGe e ITB e pressão arterial sistólica mais elevada estiveram associados a prior prognóstico entre pacientes com doença renal crônica.

NEPHROS es un ensayo controlado aleatorio que aplicó un entrenamiento de 16 semanas aeróbico y de resistencia a pacientes con enfermedad crónica de riñón y presión alta. El informe actual describe un seguimiento de largo plazo post ensayo, comparando supervivencia, calidad de vida relacionada con la salud (HRQoL) y el cambio de tasa estimada de filtración glomerular (eGFR) entre los grupos de intervención y control, y según factores de riesgo cardiovascular en el ensayo. Tras tres años del ensayo original, los participantes en NEPHROS fueron reevaluados. Se usó el modelo de Cox de riesgos proporcionales para comparar el tiempo de supervivencia y la regresión lineal para comparar el cambio en los marcadores resumen eGFR, físicos y mentales HRQoL, entre los grupos de intervención y grupos de control, y según edad, sexo, y eGFR en el ensayo, proteína C-reactiva, glucosa, lípidos, índice tobillo-brazo (ABI), capacidad funcional y presión sanguínea. De los 150 participantes de NEPHROS, 128 personas fueron incluidas en el análisis a largo plazo. No se observó un cambio en el efecto del entrenamiento físico previo en la supervivencia, eGFR o HRQoL. La base de referencia en el ensayo eGFR (HR = 0,95; 95%CI: 0,92; 0,98) y ABI (HR = 0,03; 95%CI: 0,002; 0,43) fueron predictores independientes positivos para la supervivencia. Un más bajo ABI (coeficiente = 9,00; 95%CI: 0,43; 17,5) y una presión sistólica sanguínea más alta (coeficiente = -0,13; 95%CI -0,24; -0,03) fueron predictores independientes para la disminución de la eGFR. El programa de ejercicio de dieciséis semanas no tuvo un efecto a largo plazo en la supervivencia, calidad de vida o cambio en la filtración glomerular en pacientes con etapas 2 a 4 enfermedad crónica de riñón. Una eGFR y ABI más bajos, y una presión más alta sistólica de sangre estuvieron asociadas con una prognosis más escasa entre pacientes enfermedad crónica de riñón.

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Introducción: La diabetes mellitus modifica la historia natural de la aterosclerosis. Por ello, la repercusión de este proceso en los diferentes lechos vasculares constituye la principal causa de morbimortalidad en estos pacientes. Objetivos: Determinar la frecuencia de enfermedad arterial periférica asintomática en personas con diabetes mellitus tipo 2, su relación con otras variables clínicas de la diabetes y las complicaciones de la enfermedad. Métodos: Se realizó un estudio descriptivo transversal en el policlínico Cerro con un total de 100 pacientes diabéticos tipo 2 en edades comprendidas entre 40 y 70 años en el período de un año (2019), sin diagnóstico previo de enfermedad arterial periférica ni lesiones en los pies. Se examinaron los pulsos periféricos de miembros inferiores y se calculó el índice de presiones tobillo-brazo. Resultados: Se identificaron 36 pacientes con índices bajos, lo que fue consistente con una enfermedad arterial periférica asintomática (36 por ciento). El tabaquismo se relacionó de forma significativa con la presencia de índices bajos (p = 0,02), pero no hubo diferencias significativas con respecto a la edad, el sexo, el color de la piel, el tiempo de evolución de la diabetes, el consumo de bebidas alcohólicas, la actividad física, la hipertensión arterial y la obesidad. La mayoría de los pacientes tuvo una afectación ligera en cuanto a la severidad. Conclusiones: La enfermedad arterial periférica asintomática es una complicación frecuente en las personas con diabetes de tipo 2(AU)

Introduction: Diabetes mellitus modifies the natural history of atherosclerosis. Therefore, the impact of this process on the different vascular beds is the main cause of morbidity and mortality in these patients. Objectives: Determine the frequency of asymptomatic peripheral artery disease in people with type 2 diabetes mellitus, its relationship with other clinical variables of diabetes and complications of the disease. Methods: A cross-sectional descriptive study was conducted at Cerro polyclinic with a total of 100 type 2 diabetic patients aged between 40 and 70 years in a period of one year (2019), without prior diagnosis of peripheral arterial disease or foot injuries. Peripheral pulses of the lower limbs were examined and the ankle-brachial pressure index was calculated. Results: 36 patients with low rates were identified, which was consistent with asymptomatic peripheral arterial disease (36 percent). Smoking habit was significantly related to the presence of low rates (p = 0.02), but there were no significant differences with respect to age, sex, skin color, time of evolution of diabetes, consumption of alcoholic beverages, physical activity, high blood pressure and obesity. Most patients had a slight affectation regarding severity. Conclusions: Asymptomatic peripheral artery disease is a common complication in people with type 2 diabetes(AU)

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INTRODUCCIÓN: La enfermedad arterial periférica (EAP) es más frecuente en pacientes conDiabetes Mellitus tipo 2 (DM2) que en la población general, convirtiéndolos en un grupo de alto riesgo de morbimortalidad. El objetivo del presente estudio fue determinar la frecuencia de EAP, mediante la medición del ITB y la frecuencia de sus factores de riesgo en los pacientes con Diabetes Mellitus tipo 2 del Hospital José Carrasco Arteaga. MATERIALES Y MÉTODOS: Estudio descriptivo, de corte transversal, con una muestra aleatoria simple de pacientes con diagnóstico de DM2 que acudieron a consulta externa del Hospital José Carrasco Arteaga, Cuenca-Ecuador, en el año 2017 (315 pacientes).Se aplicó una entrevista a los pacientes con datos sobre las características sociodemográficas y ciertos antecedentes médicos de importancia para el estudio; se determinó el ITB; se valoraron los exámenes complementarios de laboratorio realizados en los seis meses previos al estudio. Finalmente, se describieron frecuencias y porcentajes de cada una de las variables, se utilizó el programa IBM SPSS versión 22. RESULTADOS: Del total de pacientes se observó un promedio de edad de 62.9 años, con predominio del sexo femenino. Se determinó que la frecuencia de EAP en los pacientes con DM2 fue del 35.30%. LA EAP fue más frecuente en: el grupo de edad mayor a 50 años (38.8%), el sexo masculino (43.9%), en el grupo de pacientes con tiempo de evolución de la DM2 ≥ a 5 años (35.5%), en los pacientes con tabaquismo (38.4%), en los pacientes con niveles elevados de hemoglobina glicosilada (HbA1c ≥7%) (40.6%), los pacientes con hipertrigliceridemia, en los pacientes con LDL elevado y en hombres con HDL por debajo de valores normales. CONCLUSIÓN: Podemos concluir que la frecuencia de enfermedad arterial periférica en los pacientes con Diabetes Mellitus tipo 2, en el Hospital José Carrasco Arteaga, utilizando el índice tobillo brazo como método diagnóstico fue del 35.30%.(au)

BACKGROUND: Peripheral arterial disease (PAD) is more common in patients with type 2 Diabetes Mellitus (DM2) than in the general population, making them a high-risk group for morbidity and mortality. The aim of this study was to determine the frequency of peripheral arterial disease, by measuring ankle-brachial index, and the frequency of its risks factors in patients with type 2 Diabetes Mellitus at Hospital José Carrasco Arteaga. METHODOS: descriptive, cross-sectional study, with a simply randomized sample of patients diagnosed with Type 2 Diabetes Mellitus, who attended the outpatient clinic of Hospital José Carrasco Arteaga, Cuenca - Ecuador, in 2017 ( 315 patients). An interview was applied to the patients, to collect data on sociodemographic characteristics and certain important medical history; ankle-brachial index was determined; complementary laboratory tests made six months prior to the study were evaluated. Finally, frequencies and percentages of each variable were described; we used IMB SPSS version 22 software. RESULTS: Of the total number of patients, the average age was 62.9 years, with a predominance of the female sex. The frequency of PAD in patients with DM2 was 35.30%. PAD was more frequent in: age group over 50 years (38.8%), male sex (43.9%), disease evolution time ≥ 5 years (35.5%), in smoking patients(38.4%), in patients with elevated glycosylated hemoglobin levels (HbA1c ≥7%)(40.6%),in patients with hypertriglyceridemia, in patients with elevated LDL and in men with low HDL values. CONCLUSION: we can conclude that the peripheral arterial disease frequency in patients with type 2 Diabetes Mellitus, at Hospital José Carrasco Arteaga, using the ankle-brachial index as a diagnostic method was 35.50%.(au)

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Abstract Introduction: Vascular calcification related to severe secondary hyperparathyroidism (SHPT) is an important cause of cardiovascular and bone complications, leading to high morbidity and mortality in patients with chronic kidney disease (CKD) undergoing hemodialysis (HD). The present study aimed to analyze whether ankle-brachial index (ABI), a non-invasive diagnostic tool, is able to predict cardiovascular outcomes in this population. Methods: We selected 88 adult patients on HD for at least 6 months, with serum iPTH>1,000pg/mL. We collected clinical data, biochemical and hormonal parameters, and ABI (sonar-Doppler). Calcification was assessed by lateral radiography of the abdomen and by simple vascular calcification score (SVCS). This cohort was monitored prospectively between 2012 and 2019 for cardiovascular outcomes (death, myocardial infarction (MI), stroke, and calciphylaxis) to estimate the accuracy of ABI in this setting. Results: The baseline values were: iPTH: 1770±689pg/mL, P: 5.8±1.2 mg/dL, corrected Ca: 9.7±0.8mg/dL, 25(OH)vit D: 25.1±10.9ng/mL. Sixty-five percent of patients had ABI>1.3 (ranging from 0.6 to 3.2); 66% had SVCS≥3, and 45% aortic calcification (Kauppila≥8). The prospective evaluation (51.6±24.0 months), provided the following cardiovascular outcomes: 11% of deaths, 17% of nonfatal MI, one stroke, and 3% of calciphylaxis. After adjustments, patients with ABI≥1.6 had 8.9-fold higher risk of cardiovascular events (p=0.035), and ABI≥1.8 had 12.2-fold higher risk of cardiovascular mortality (p=0.019). Conclusion: The presence of vascular calcifications and arterial stiffness was highly prevalent in our population. We suggest that ABI, a simple and cost-effective diagnostic tool, could be used at an outpatient basis to predict cardiovascular events in patients with severe SHPT undergoing HD.

Resumo Introdução: A calcificação vascular relacionada ao hiperparatireoidismo secundário (HPTS) grave é uma causa importante de complicações cardiovasculares e ósseas, levando a alta morbidade e mortalidade em pacientes com doença renal crônica (DRC) em hemodiálise (HD). O presente estudo objetivou analisar se o índice tornozelo-braquial (ITB), uma ferramenta diagnóstica não invasiva, pode predizer desfechos cardiovasculares nesta população. Métodos: Selecionamos 88 adultos em HD há pelo menos 6 meses, com PTHi sérico>1.000pg/mL. Coletamos dados clínicos, parâmetros bioquímicos e hormonais, e ITB (sonar-Doppler). A calcificação foi avaliada por radiografia lateral do abdome e por escore de calcificação vascular simples (ECVS). Esta coorte foi monitorada prospectivamente entre 2012 e 2019 para desfechos cardiovasculares (óbito, infarto do miocárdio (IM), acidente vascular cerebral e calcifilaxia) para estimar a precisão do ITB neste cenário. Resultados: Os valores basais foram: PTHi: 1770±689pg/mL, P: 5,8±1,2 mg/dL, Ca corrigido: 9,7±0,8mg/dL, 25(OH)vit D: 25,1±10,9ng/Ml; 65% dos pacientes apresentaram ITB>1,3 (variando de 0,6 a 3,2); 66% tiveram ECVS≥3, e 45% calcificação da aorta (Kauppila≥8). A avaliação prospectiva (51,6±24,0 meses) forneceu os seguintes desfechos cardiovasculares: 11% de óbitos, 17% de IM não fatal, um AVC, 3% de calcifilaxia. Após ajustes, pacientes com ITB≥1,6 tiveram risco 8,9 vezes maior de eventos cardiovasculares (p=0,035), e ITB≥1,8 apresentaram risco 12,2 vezes maior de mortalidade cardiovascular (p=0,019). Conclusão: A presença de calcificações vasculares e rigidez arterial foi altamente prevalente em nossa população. Sugerimos o ITB, uma ferramenta diagnóstica simples e econômica, para ser usada em ambulatório para prever eventos cardiovasculares em pacientes com HPTS grave em HD.

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