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BACKGROUND: Candidates for transcatheter aortic valve implantation (TAVI) are currently evaluated using computed tomography angiography and invasive cardiac catheterization as an essential part of case selection and pre-procedure interventional planning. However, both imaging methods utilize iodinated agents, which may cause contrast-induced nephropathy, particularly in patients with baseline renal dysfunction. This study aimed to describe a zero-contrast imaging protocol for pre-TAVI evaluation in patients with advanced renal impairment. METHODS: The pre-TAVI zero-contrast scheme consisted of the following multi-modality combinations: (1) gadolinium-free magnetic resonance imaging (three-dimensional navigator-echo with electrocardiogram-gated steady-state free-precession series); (2) iodinated-free multislice computed tomography electrocardiogram-gated; (3) lower limb arterial duplex scan ultrasound; and (4) transesophageal echocardiography. Ultimately, TAVI was performed for those deemed good candidates, and contrast was allowed during the intervention; however, operators were strongly advised to utilize the least volume possible of iodinated agents. This pilot survey included ten patients with symptomatic aortic stenosis and renal dysfunction who underwent zero-contrast multi-modality imaging. RESULTS: All the patients ultimately underwent TAVI. The intervention was successful in all cases, without ≥ moderate residual aortic regurgitation, prosthesis embolization, annulus rupture, major vascular complications, stroke, or death during index hospitalization. The creatinine clearance remained stable throughout the observation period (baseline: 26.85 ± 12.55 mL/min; after multi-modality imaging: 26.76 ± 11.51 mL/min; post-TAVI at discharge: 29.84 ± 13.98 mL/min; p = 0.3 all). CONCLUSION: The proposed contrast-free imaging protocol appears to be a promising clinical tool for pre-TAVI evaluation in patients with severe renal dysfunction.

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Objective: To evaluate the prognostic impact of the parameters of myocardial deformation using three-dimensional speckle tracking echocardiography (3DSTE) in patients with breast cancer who underwent chemotherapy with low doses of anthracyclines. Background: Chemotherapy-related cardiotoxicity has an important prognostic impact on cancer survivors. Three-dimensional STE has revealed more consistent data than two-dimensional techniques and may represent a more accurate tool in the evaluation of myocardial function in patients who underwent chemotherapy. Methods: We evaluated patients with breast cancer who were treated with anthracyclines (associated or not with trastuzumab) in five stages: baseline, after cumulative doses of 120 and 240 mg/m2 of doxorubicin, and then, after 6 months and at least 1 year after anthracyclines. Ultrasensitive troponin I (US-TnI) and a standard echocardiography study were performed at each stage. We analyzed left ventricular ejection fraction (LVEF) by Simpson's method, two-dimensional speckle tracking (2DSTE) with longitudinal and radial strain values, and 3DSTE with longitudinal, radial, and circumferential strain as well as twist, torsion, rotation, and three-dimensional global area strain (3DGAS). Cardiotoxicity was defined as a decrease in LVEF by more than 10 percentage points to a value lower than 53%. Results: We evaluated 51 female patients who were aged 50.6 ± 11 years. After the cumulative dose of 240 mg/m2 of doxorubicin, US-TnI was increased (>34 pg/ml) in 21 patients (45%, p > 0.001), LVEF remained unchanged (p = 0.178), while 2DSTE longitudinal strain was decreased (from -17.8% to -17.1%, p < 0.001) and 3DSTE detected changes in longitudinal, radial, circumferential, and area strain. After a lower cumulative dose of doxorubicin (120 mg/m2), 3DGAS (p < 0.001) was the only parameter that was changed. In the follow-up, 7 (13%) patients presented a decrease in LVEF. Three-dimensional GAS early changed to abnormal values was the only variable associated with a subsequent decrease in LVEF (definitive cardiotoxicity). Conclusion: In patients with breast cancer, 3DSTE detected early changes in area strain after very low doses of doxorubicin. The 3DGAS early changed to abnormal values was associated with a subsequent decrease in LVEF, representing a promising technique to predict chemotherapy-induced cardiomyopathy.

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BACKGROUND: Information is lacking concerning in-hospital echocardiography analysis of COVID-19 infection in Brazil. We evaluated echocardiographic parameters to predict a composite endpoint of mortality, pulmonary thromboembolism or acute renal failure. METHODS: A prospective full echocardiographic study of consecutive patients hospitalized with COVID-19, single tertiary centre in Brazil. We correlated echocardiographic findings to biomarkers, clinical information, thoracic tomography, and in-hospital composite endpoint of mortality, pulmonary thromboembolism or renal failure. RESULTS: One hundred eleven patients from March to October 2020, 67 ± 17 years, 65 (58.5%) men, death was observed in 21/111 (18.9%) patients, 48 (43%) required mechanical ventilation, myocardial infarction occurred in 10 (9%), pulmonary thromboembolism in 7 (6.3%) patients, haemodialysis was required for 9 (9.8%). Echocardiography was normal in 51 (46%) patients, 20 (18%) presented with decreased left ventricle ejection, 18 (16.2%) had abnormal left ventricle global longitudinal strain, 35 (31%) had diastolic dysfunction, 6 (5.4%) had an E/e'ratio > 14, 19 (17.1%) presented with right ventricle dilated/dysfunction, 31 (28%) had pericardial effusion. The echocardiographic parameters did not correlate with mortality, biomarkers, clinical events. Tricuspid velocity was related to the composite endpoint of mortality, pulmonary thromboembolism or acute renal failure (p: 00.3; value: 2.65 m/s; AUC ROC curve: 0.739; sensitivity: 73.3; specificity: 66.7; CI: 0.95, inferior: 0.613; superior: 0,866). CONCLUSIONS: Among hospitalized patients with COVID-19, echocardiography was normal in 51(46%) patients, and 20 (18%) patients presented with a decreased left ventricle ejection fraction. Tricuspid velocity was related to the composite endpoint of mortality, pulmonary thromboembolism or acute renal failure.

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Although the Cone procedure has improved outcomes for patients with Ebstein´s anomaly (EA), neither RV systolic function recovery in long-term follow-up nor the best echocardiographic parameters to assess RV function are well established. Thus, we evaluated RV performance after the Cone procedure comparing two-dimensional (2DEcho) and three-dimensional (3DEcho) echocardiography to cardiac magnetic resonance (CMR). We assessed 27 EA patients after the Cone procedure (53% female, median age of 20 years at the procedure, median post-operative follow-up duration of 8 years). Echocardiography was performed 4 h apart from the CMR. RV global longitudinal strain (GLS), fractional area change (FAC), tricuspid annular plane systolic excursion (TAPSE), myocardial performance index and tissue Doppler S' velocity were assessed using 2DEcho, whereas 3DEcho was used to evaluate RV volumes and ejection fraction (RVEF). Echocardiographic variables were compared to CMR-RVEF. All patients were in the NYHA functional class I. Median TAPSE was 15.9 mm, FAC 30.2%, and RV-GLS -15%; median RVEF by 3DEcho was 31.9% and 43% by CMR. Among 2DEcho parameters, RV-GLS and FAC had a substantial correlation with CMR-RVEF (r = - 0.63 and r = 0.55, respectively); from 3DEcho, the indexed RV volumes and RVEF were closely correlated with CMR (RV-EDVi, r = 0.60, RV-ESVi, r = 0.72; and RVEF r = 0.60). RV systolic function is impaired years after the Cone procedure, despite a good clinical status. FAC and RV-GLS are useful 2DEcho tools to assess RV function in these patients; however, 3DEcho measurements appear to provide a better RV assessment.

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BACKGROUND: Brazil, the largest country and economy in South America, is a major driving force behind the development of new medical technologies in the region. Robotic cardiac surgery (RCS) has been evolving rapidly since 2010, when the first surgery using the DaVinci® robotic system was performed in Latin America. The aim of this article is to evaluate short and mid-term results in patients undergoing robotic cardiac surgery in Brazil. METHODS: From March 2010 to December 2015, 39 consecutive patients underwent robotic cardiac surgery. Twenty-seven patients were male (69.2%), with the mean age of 51.3±17.9 years. Participants had a mean ejection fraction of 62±5%. The procedures included in this study were mitral valve surgery, surgical treatment of atrial fibrillation, atrial septal defect closure, resection of intra-cardiac tumors, totally endoscopic coronary artery bypass and pericardiectomy. RESULTS: The mean time spent on cardiopulmonary bypass (CPB) during RCS was 154.9±94.2 minutes and the mean aortic cross-clamp time was 114.48±75.66 minutes. Thirty-two patients (82%) were extubated in the operating room immediately after surgery. The median intensive care unit (ICU) length of stay was 1 day (ranging from 0 to 25) and the median hospital length of stay was 5 days (ranging from 3 to 25). For each type of procedure, endpoints were individually reported. There were no conversions to sternotomy and no intra-operative complications. Patient follow-up was complete in 100% of the participants, with two early deaths unrelated to the procedures and no re-operations at mid-term. CONCLUSIONS: Despite the heterogeneity of this series, RCS appears to be feasible, safe and effective when used for the correction of various intra- and extra-cardiac pathologies. Adopting the robotic system has been a challenge in Brazil, where its limited clinical application may be related to the lack of specific training and the high cost of technology.

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Fundamento: O ecocardiograma é particularmente importante para a avaliação de pacientes instáveis hemodinamicamente. Apesar de sua realização à beira do leito eliminar o risco resultante do transporte, a obtenção de imagens pode ficar prejudicada; o posicionamento adequado poderia contribuir para uma melhor qualidade de imagem e consequentemente análise do exame. Objetivo: Avaliar se o posicionamento do paciente pela enfermagem poderia influenciar a qualidade das imagens ecocardiográficas obtidas no leito. Métodos: Foram estudados de maneira consecutiva os pacientes com solicitação de exame no leito. Durante a realização de ecocardiograma transtorácico foram adquiridos vídeos dos planos para esternal longitudinal (PEL) e apical 4-câmaras(Apical-4C) e a imagem estática do fluxo aórtico (FAo) em decúbito lateral esquerdo (DLE) e em decúbito dorsal (DD). As imagens digitalizadas foram analisadas cegamente por dois observadores em relação ao tipo de decúbito utilizado. A qualidade das imagens foi graduada como 1:boa/ótima; 2:inadequada/ruim; e comparadas com o teste de Kappa e correlação de Pearson. Resultados: Foram estudados 68 pacientes, com idade de 69 ± 24 anos, sendo 37 do sexo masculino e superfície corpórea 1,85 ± 0,09 m2. Em relação aos cortes, as imagens em DLE apresentam melhor qualidade (p < 0,001) quando comparadas ao DD tanto para os vídeos Apical-4C (Kappa 0,19) e PEL (Kappa 0,25) e FAo (Kappa 0,13); a concordância entre os avaliadores para a qualidade das imagens foi de 95%. Conclusão: O posicionamento adequado do paciente no leito em decúbito lateral esquerdo contribui significativamente para a aquisição de imagens de melhor qualidade.

Background: Echocardiography is particularly important for assessing hemodynamically unstable patients. Despite being carried out at the bedside to eliminate the risk resulting from patient’s transportation, the imaging maybe impaired. Proper patient’s positioning could contribute to enhancing both the image quality and analysis of the exam. Objective: To evaluate whether patient’s positioning by nurses could influence the quality of the echocardiographic images obtained at the bedside. Methods: Patients whose examinations were requested to be carried out at the bedside were studied in a consecutive manner. During transthoracic echocardiography, videos of the parasternal longitudinal view (PLV) and 4-chamber apical view (Apical-4C) were obtained, as well as the still image of the aortic flow (FAo), in the left lateral decubitus (LLD) and supine decubitus (SD). The scanned images were blindly analyzed by two observers comparing the type of decubitus used. The image quality was rated as 1: good/excellent quality; 2: inadequate/poor, and then submitted to Kappa agreement test and Pearson correlation. Results: 68 patients were studied, aged 69 ± 24 years, 37 males and body surface 1.85 ± 0.09 m2. When the distinct views were compared, LLD images showed better quality (p < 0.001) when compared to SD for both the Apical-4C videos (Kappa 0.19) and PLV (Kappa 0.25) and FAo (Kappa 0.13); interobserver agreement of the quality of the images was 95%. Conclusion: Patient’s proper positioning in bed in left lateral decubitus contributes significantly to the acquisition of better quality images.

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Rupture of tricuspid valve is unusual, occurring mainly in the setting of blunt trauma or endomyocardial biopsy. Spontaneous tricuspid valve chordal rupture is particularly rare. We report herein a case of a patient with severe pulmonary hypertension, on the lung transplantation waiting list, who presented with spontaneous chordal rupture, exacerbation of tricuspid insufficiency and worsening of clinical status. Diagnosis and treatment, along with possible mechanisms for this complication, are discussed.

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O sistema MitraClip® foi recentemente aprovado para uso clínico no Brasil para o tratamento percutâneo da insuficiência valvar mitral. Esse dispositivo se baseia na cirurgia de Alfieri, criando um orifício duplo pela união central das duas cúspides da valva mitral. Descrevemos aqui os dois primeiros procedimentos realizados em nosso meio utilizando esse dispositivo. Tratam-se de duas pacientes do sexo feminino, consideradas de alto risco cirúrgico pela idade avançada e pela presença de comorbidades, portadoras de insuficiência mitral degenerativa por prolapso/flail associado à rotura de cordoalhas. Nos dois casos, obteve-se redução expressiva da intensidade da regurgitação mitral com a utilização do MitraClip®, demonstrando o grande potencial dessa tecnologia inovadora para o tratamento percutâneo da insuficiência valvar mitral.

The MitraClipTM system has been recently approved for clinical use in Brazil for percutaneous treatment of mitral valve regurgitation. This device is based on the Alfieri surgical procedure, creating a double orifice by bringing together the central segments of the two mitral valve cusps. This report describes the first two procedures performed in Brazil using this device. Two female patients considered to be at high surgical risk due to advanced age and presence of comorbidities were treated, with degenerative mitral regurgitation due to prolapse/flail, associated with chordae tendineae rupture. In both cases, significant mitral regurgitation intensity reduction was obtained using the MitraClipTM, demonstrating the great potential of this innovative technology for the percutaneous treatment of mitral valve regurgitation.

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The left atrial volume index (LAVI) is a biomarker of diastolic dysfunction and a predictor of cardiovascular events. Three-dimensional echocardiography (3DE) is highly accurate for LAVI measurements but is not widely available. Furthermore, biplane two-dimensional echocardiography (B2DE) may occasionally not be feasible due to a suboptimal two-chamber apical view. Simplified single plane two-dimensional echocardiography (S2DE) could overcome these limitations. We aimed to compare the reliability of S2DE with other validated echocardiographic methods in the measurement of the LAVI. We examined 143 individuals (54 ± 13 years old; 112 with heart disease and 31 healthy volunteers; all with sinus rhythm, with a wide range of LAVI). The results for all the individuals were compared with B2DE-derived LAVIs and validated using 3DE. The LAVIs, as determined using S2DE (32.7 ± 13.1 mL/m(2)), B2DE (31.9 ± 12.7 mL/m(2)), and 3DE (33.1 ± 13.4 mL/m(2)), were not significantly different from each other (P = 0.85). The S2DE-derived LAVIs correlated significantly with those obtained using both B2DE (r = 0.98; P < 0.001) and 3DE (r = 0.93; P < 0.001). The mean difference between the S2DE and B2DE measurements was <1.0 mL/m(2). Using the American Society of Echocardiography criteria for grading LAVI enlargement (normal, mild, moderate, severe), we observed an excellent agreement between the S2DE- and B2DE-derived classifications (κ = 0.89; P < 0.001). S2DE is a simple, rapid, and reliable method for LAVI measurement that may expand the use of this important biomarker in routine echocardiographic practice.

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BACKGROUND: Takotsubo cardiomyopathy, described as transient regional contractile abnormalities limited to the apical and mid-segments of the left ventricle (LV), has also been reported to involve basal and/or mid LV segments (inverted Takotsubo); fewer reports, however, have addressed right ventricular (RV) dysfunction. AIM: To assess the distribution of regional abnormalities and RV involvement in Takotsubo cardiomyopathy and compare it to the literature. METHODS AND RESULTS: We evaluated 23 patients with both classical and inverted presentations (19 female, aged 64 ± 19 years), including 2 recurrences, totaling 25 episodes. Classical Takotsubo was observed in 15 patients, while 10 had the inverted form. LV ejection fraction (EF) was lower for classical compared to inverted presentation (30 ± 7 vs. 45 ± 4%, P < 0.001) with higher troponin values (1.3 ± 1.4 vs. 0.5 ± 0.6, P = 0.034). RV abnormalities were found in 7 patients (28%), mainly with classical presentation (6 patients), presenting with mid and apical RV impairment. One patient with inverted Takotsubo had mid-RV involvement. Patients with RV involvement had lower left ventricular ejection fraction (LVEF) (28 ± 10% vs. 40 ± 10%, P = 0.02), but not when adjusted for presentation type. Overall rate of complications was higher for classical compared to inverted presentation, and not influenced by RV involvement. CONCLUSION: RV contractile abnormalities may follow the same LV regional distribution in Takotsubo cardiomyopathy; the type of presentation rather than the presence of RV dysfunction seems to be responsible for an increased risk of complications and severity of functional impairment.

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BACKGROUND: Obstructive sleep apnoea (OSA) is a predictor of right ventricle (RV) impairment. However, there is scant information on the effect of OSA treatment on RV performance. We sought to evaluate the impact of OSA treatment with a continuous positive airway pressure (CPAP) device on RV volume and function, as well as on variables related to pulmonary vascular haemodynamics. METHODS: Fifty-six OSA patients and 50 controls were studied. All individuals underwent three-dimensional echocardiogram (3DE) to estimate RV volumes, function, pulmonary vascular resistance, and tricuspid regurgitation velocity. A total of 30 patients with apnoea-hypopnoea index greater than 20 were randomly selected to receive placebo (n=15) or effective CPAP (n=15) for 24 weeks. They underwent 3DE examination on three different occasions: at baseline, after 12 weeks, and after 24 weeks of CPAP or placebo. RESULTS: Higher pulmonary vascular resistance (2.1 Wood's ± 0.5 vs. 1.8 Wood's ± 0.4), larger end-diastolic RV volume index (52.2 mL/m(2) ± 7.3 vs. 49.9 mL/m(2) ± 6.0), larger end-systolic RV volume index (18.7 mL/m(2) ± 4.3 vs. 15.4 mL/m(2) ± 3.6), and lower RV ejection fraction (64.3% ± 6.8 vs. 68.4% ± 5.9) were observed in the OSA group compared to non-OSA controls (P<0.05, all). In the effective CPAP group we observed the following changes from the baseline to the 24-week echo evaluation: (A) reduction in pulmonary vascular resistance (2.2 Wood's ± 0.3 to 1.8 Wood's ± 0.3); (B) reduction in the RV end-systolic volume index (20.3 mL/m(2) ± 4.5 to 16 mL/m(2) ± 2.1); and (C) increase in RV ejection fraction (63.0% ± 7.2 to 70.8% ± 0.9) (P<0.05 for all). CONCLUSION: Twenty-four-week treatment with CPAP improved RV performance but did not change RV structural variables.

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Classicamente, a cardiomiopatia de Takotsubo caracteriza-se por alteração transitória da contratilidade regional envolvendo o ápex e os segmentos médios do ventrículo esquerdo, com segmentos basais hipercontráteis, na ausência de doença coronária obstrutiva. Recentemente, casos de disfunção regional do ventrículo esquerdo induzidos pelo estresse, com padrões alternativos de disfunção regional em que o ápex é geralmente poupado (Takotsubo Invertido), têm sido relatados. Neste relato é descrito um caso de miocardiopatia induzida pelo estresse, no qual alterações da contratilidade segmentar foram observadas somente nos segmentos médios dos ventrículos, formando uma região acinética em faixa em torno do coração.

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Neste relato, é apresentado um caso de placa aterosclerótica complicada, com trombo móvel pedunculado ao nível da transição da aorta ascendente para o arco aórtico, demonstrando a importância da realização da investigação ecocardiográfica, com a inclusão da janela supraesternal, muitas vezes, negligenciada nos exames ecocardiograficos transtorácicos de rotina. O termo rato branco deve-se ao fato de a estrutura adquirir esse aspecto ao exame em tempo real.

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AIMS: To investigate by real-time 3D echocardiography (RT3DE) and cardiac computed tomography (CCT) the analysis of left ventricle ejection fraction (LVEF) and volumes. METHODS AND RESULTS: A total of 67 patients (37 males, 55 +/- 11 years) were studied prospectively by RT3DE and by 64-slice CCT. RT3DE data: LVEF ranged from 30 to 78.6% (63.1 +/- 7.33); left ventricular end-diastolic volume (LVEDV) from 44.1 to 210 (104.9 +/- 29.7) mL; left ventricular end-systolic volume (LVESV) from 11.4 to 149 ( 38.9 +/- 19.3) mL. CCT data: LVEF ranged from 28 to 86% (66 +/- 8.4); LVEDV from 51 to 212 (110.3 +/- 31.2) mL; LVESV from 7 to 152 (38.2 +/- 19.2) mL. Correlations relative to RT3DE and CCT were: LVEF (r: 0.79, P < 0.0001); LVEDV (r: 0.82, P < 0.0001); and LVESV (r: 0.91, P < 0.0001). CONCLUSION: It was observed adequate correlation between RT3DE and CCT ventricular systolic function and geometry assessment.

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BACKGROUND: Real-time three-dimensional echocardiography (RT-3D-Echo) and ultrafast computed tomography (CT) are two novel methods for the analysis of LV ejection fraction and volumes. OBJECTIVE: To compare LVEF and volume measurements as obtained using RT-3D-Echo and ultrafast CT. METHODS: Thirty nine consecutive patients (27 men, mean age of 57+/-12 years) were studied using RT-3D-Echo and 64-slice ultrafast CT. LVEF and LV volumes were analyzed. STATISTICAL ANALYSIS: coefficient of correlation (r: Pearson), Bland-Altman analysis, linear regression analysis, 95% CI, p<0.05. RESULTS: RT-3D-Echo measurements: LVEF ranged from 56.1 to 78.6 (65.5+/-5.58)%; end-diastolic volume ranged from 49.6 to 178.2 (87+/-27.8) ml; end-systolic volume ranged from 11.4 to 78 (33.1+/-13.6) ml. CT scan measurements: LVEF ranged from 53 to 86% (67.8+/-7.78); end-diastolic volume ranged from 51 to 186 (106.5+/-30.3) ml; end-systolic volume ranged from 7 to 72 (35.5+/-13.4)ml. Correlations between RT-3D-Echo and CT were: LVEF (r: 0.7888, p<0.0001, 95% CI 0.6301 to 0.8843); end-diastolic volume (r: 0.7695, p<0.0001, 95% CI 0.5995 to 0.8730); end-systolic volume (r: 0.8119, p<0.0001, 95% CI 0.6673 to 0.8975). CONCLUSION: Good correlation between LVEF and ventricular volume parameters as measured by RT-3D-Echo and 64-slice ultrafast CT was found in the present case series.

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BACKGROUND: There is a paucity of information concerning left ventricular (LV) dyssynchrony assessment by real time three-dimensional (3D) echocardiography (RT3DE) versus tissue Doppler imaging (TDI). AIMS: To compare RT3DE and TDI LV dyssynchrony assessment. METHODS: A prospective study of 92 individuals (56 men, age 47 +/- 10 years), 32 with dilated cardiomyopathy (CMP), and 60 healthy individuals. By RT3DE, we measured the LV% dyssynchrony index (DI) of 6, 12, and 16 segments (SDI). By pulsed-wave TDI, we measured the QS electromechanical interval in the basal segments of the mitral valve annulus of the septum, the lateral, anterior and inferior walls, and the TDI% DI. RESULTS: In the normal group, the 3D DI was 1.1 +/- 0.8%, 1.4 +/- 1.3%, 1.8 +/- 1.7%, for 6 segments, 12 segments, and SDI, respectively. The correlation coefficient (Pearson's r) for the TDI DI and SDI was r = 0.2381 (P = 0.0470). In CMP group, the 3D DI was 4.6 +/- 5.4%, 7.9 +/- 7.1%, 11.1 +/- 7.1%, for 6 segments, 12 segments, and SDI, respectively. The correlation coefficient for TDI DI and SDI was r = 0.7838 (P < 0.0001). CONCLUSIONS: We observed a good correlation between RT3DE and tissue Doppler LV dyssynchrony assessment in patients with advanced heart failure.

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FUNDAMENTO: O ecocardiograma tridimensional em tempo real (ECO 3D) e a tomografia computadorizada ultra-rápida (CT) são dois novos métodos de análise da fração de ejeção e dos volumes do VE. OBJETIVO: Comparar as medidas da FEVE e dos volumes do VE aferidos pelo ECO 3D e pela CT ultra-rápida. MÉTODOS: Foram estudados pelo ECO 3D e pela CT ultra-rápida de 64 cortes, 39 pacientes consecutivos (27 homens, média etária de 57±12 anos). Foram analisados: FEVE e volumes do VE. Análise estatística: coeficiente de correlação (r: Pearson), teste de Bland & Altman, teste de regressão linear, 95 por cento IC, p<0,05. RESULTADOS: Medidas do ECO 3D: a FEVE variou de 56,1 a 78,6 (65,5±5,58) por cento; volume diastólico final variou de 49,6 a 178,2 (87±27,8)ml; volume sistólico final variou de 11,4 a 78 (33,1±13,6)ml. Medidas da CT: a FEVE variou de 53 a 86 (67,8±7,78) por cento; volume diastólico final variou de 51 a 186 (106,5±30,3) ml; volume sistólico final variou de 7 a 72 (35,5±13,4)ml. As correlações entre ECO 3D e CT foram: FEVE (r: 0,7888, p<0,0001, 95 por cento IC 0,6301 a 0,8843); volume diastólico final (r: 0,7695, p<0,0001, 95 por cento IC 0,5995 a 0,8730); volume sistólico final (r: 0,8119, p<0,0001, 95 por cento IC 0,6673 a 0,8975). CONCLUSÃO: Nesta série, foi observada boa correlação entre as medidas da FEVE e entre os volumes ventriculares aferidos pelo ECO3D e pela CT ultra-rápida de 64 cortes.

BACKGROUND: Real-time three-dimensional echocargiography (RT-3D-Echo) and ultrafast computed tomography (CT) are two novel methods for the analysis of LV ejection fraction and volumes. OBJECTIVE: To compare LVEF and volume measurements as obtained using RT-3D-Echo and ultrafast CT. METHODS: Thirty nine consecutive patients (27 men, mean age of 57±12 years) were studied using RT-3D-Echo and 64-slice ultrafast CT. LVEF and LV volumes were analyzed. Statistical analysis: coefficient of correlation (r: Pearson), Bland-Altman analysis, linear regression analysis, 95 percent CI, p<0.05. RESULTS: RT-3D-Echo measurements: LVEF ranged from 56.1 to 78.6 (65.5±5.58) percent; end-diastolic volume ranged from 49.6 to 178.2 (87±27.8) ml; end-systolic volume ranged from 11.4 to 78 (33.1±13.6) ml. CT scan measurements: LVEF ranged from 53 to 86 percent (67.8±7.78); end-diastolic volume ranged from 51 to 186 (106.5±30.3) ml; end-systolic volume ranged from 7 to 72 (35.5±13.4)ml. Correlations between RT-3D-Echo and CT were: LVEF (r: 0.7888, p<0.0001, 95 percent CI 0.6301 to 0.8843); end-diastolic volume (r: 0.7695, p<0.0001, 95 percent CI 0.5995 to 0.8730); end-systolic volume (r: 0.8119, p<0.0001, 95 percent CI 0.6673 to 0.8975). CONCLUSION: Good correlation between LVEF and ventricular volume parameters as measured by RT-3D-Echo and 64-slice ultrafast CT was found in the present case series.

FUNDAMENTO: La ecocardiografía tridimensional en tiempo real (Eco-3DTR) y la tomografía computarizada ultrarrápida (TC ultrarrápida) son dos nuevos métodos de análisis de la fracción de eyección (FE) y de los volúmenes del ventrículo izquierdo (VI). OBJETIVO: Comparar las mediciones de la fracción de eyección del ventrículo izquierdo (FEVI) y de los volúmenes del VI apurados por la Eco-3DTR y por la TC ultrarrápida. MÉTODOS: Se estudiaron, mediante la Eco-3DTR y la TC ultrarrápida de 64 cortes, a 39 pacientes consecutivos (27 varones, promedio de edad de 57±12 años). Se analizaron: FEVI y volúmenes del VI. Análisis estadístico: coeficiente de correlación (r: Pearson), prueba de Bland & Altman, prueba de regresión lineal, 95 por ciento IC, p<0,05. RESULTADOS: Valores de la Eco-3DTR: variación de la FEVI de 56,1 a 78,6 (65,5±5,58) por ciento; variación del volumen diastólico final de 49,6 a 178,2 (87±27,8)mL; variación del volumen sistólico final de 11,4 a 78 (33,1±13,6)mL. Valores de la TC ultrarrápida: variación de la FEVI de 53 a 86 (67,8±7,78) por ciento; variación del volumen diastólico final de 51 a 186 (106,5±30,3) mL; variación del volumen sistólico final de 7 a 72 (35,5±13,4) mL. Las correlaciones entre la Eco-3DTR y la TC ultrarrápida fueron: FEVI (r: 0,7888, p<0,0001, 95 por ciento IC 0,6301 a 0,8843); volumen diastólico final (r: 0,7695, p<0,0001, 95 por ciento IC 0,5995 a 0,8730); volumen sistólico final (r: 0,8119, p<0,0001, 95 por ciento IC 0,6673 a 0,8975). CONCLUSIÓN: En esta serie, se observó una buena correlación entre las mediciones de la FEVI y entre los volúmenes ventriculares apurados por la Eco-3DTR y por la TC ultrarrápida de 64 cortes.

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BACKGROUND: Left ventricular (LV) electromechanical coupling (synchrony) is important in the analysis of the systolic performance, especially for the indication of cardiac resynchronization therapy in patients with advanced CHF. OBJECTIVE: To compare LV synchrony as analyzed by real-time three-dimensional (3D) echocardiography (ECHO) with LVEF measurements as obtained with 2D and 3D ECHO. METHODS: Prospective study of 92 individuals (56 men, 47 +/- 10 years of age), of which 60 had normal heart structure (ECHO) and ECG (N group), and 32 had dilated cardiomyopathy (DCM group). Using 3D ECHO, LVEF, volumes and dyssynchrony index (%DI) for 16 LV segments were measured. Using 2D ECHO, LVEF (Simpson's method), and LV systolic and diastolic volumes were measured. STATISTICAL ANALYSIS: Pearson's correlation coefficient, 95% CI, linear regression model, Bland & Altman analysis, p<0.05. RESULTS: %DI ranged from 0.2900 to 28.1000 (5.2014+/-6.3281), 3D LVEF ranged from 0.17 to 0.81 (0.52+/-0.17); and 2D LVEF ranged from 0.3 to 0.69 (0.49+/-0.11). The correlation between DI and 3D LVEF was (r): -0.7432, p<0.0001, CI: -0.8227 to -0.6350, the linear relation between DI (x) and 3D LVEF (y) was y = 19.8124 + (-27.9578) x, p<0.0001. The correlation between DI and 2D LVEF was (r): -0.7012, p<0.0001, CI: -0.7923 to -0.5797. CONCLUSION: In this case series, a good negative correlation was observed between LV electromechanical three-dimensional systolic coupling and LVEF as measured by echocardiography (3D and 2D).

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