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The evolution of biomaterials engineering allowed for the development of products that improve outcomes in the medical-dental field. Bioglasses have demonstrated the ability to either compose or replace different materials in dentistry. This study evaluated the cytotoxicity, biocompatibility, calcium deposition, and collagen maturation of 45S5 bioglass experimental paste and Bio-C Temp, compared to calcium hydroxide (Ca(OH)2) paste. The 45S5 bioglass and Ca(OH)2 powder were mixed with distilled water (ratio 2:1); Bio-C Temp is ready-for-use. Dental pulp cells were exposed to the materials' extracts (1:2 and 1:4 dilutions; 24, 48, and 72 h) for MTT and live/dead analyses. Polyethylene tubes filled with the pastes, or left empty (control), were implanted on the dorsum of 16 rats. After 7 and 30 days (n = 8/period), the rats were euthanized and the specimens were processed for hematoxylin-eosin (H&E), von Kossa (vK), and picrosirius red (PSR) staining, or without staining for polarized light (PL) birefringence analysis. A statistical analysis was applied (p < 0.05). There was no difference in cell viability among Ca(OH)2, 45S5 bioglass, and the control, across all periods and dilutions (p > 0.05), while Bio-C Temp was cytotoxic in all periods and dilutions compared to the control (p < 0.05). Regarding biocompatibility, there was a reduction in inflammation from 7 to 30 days for all groups, without significant differences among the groups for any period (p > 0.05). The fibrous capsules were thick for all groups at 7 days and thin at 30 days. All materials showed positive structures for vK and PL analysis. At 7 days, the control and 45S5 bioglass showed more immature collagen than the other groups (p < 0.05); at 30 days, 45S5 bioglass had more immature than mature collagen, different from the other groups (p < 0.05). In conclusion, Bio-C Temp presented cytotoxicity compared to the other materials, but the three pastes showed biocompatibility and induced calcium deposition. Additionally, the bioglass paste allowed for marked and continuous collagen proliferation. This study contributed to the development of new biomaterials and highlighted different methodologies for understanding the characteristics of medical-dental materials.

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OBJECTIVE: This study evaluated the influence of melatonin supplementation on tissue's response of endodontic sealers in Wistar rats. METHODOLOGY: Forty-eight rats received subcutaneous implants of four polyethylene tubes: one empty (control) and three filled with endodontic sealers (AH Plus, Endofill and Sealapex). Half of the animals were supplemented with melatonin (ME) and the remaining treated with water (WA) for 15 days before the implantation until euthanasia, forming the groups: control-WA, AH Plus-WA, Endofill-WA, Sealapex-WA, Control-ME, AH Plus-ME, Endofill-ME and Sealapex-ME. After 5, 15 and 30 days, (n = 8) tubes were removed and evaluated in H&E., immunohistochemistry, PSR, VK and POL. The results were statistically analyzed (p < 0.05). RESULTS: In animals treated with water, Endofill-WA evoked more intense inflammatory infiltrate compared to AH Plus-WA and Control-WA in a 30-day period (p < 0.05). In animals supplemented with melatonin, there was any difference among endodontic sealers' response in any period of analysis (p > 0.05). Comparing the individual response of each sealer, over a 30-day period, Endofill-ME and Sealapex-ME showed less inflammatory infiltrate compared to Endofill-WA and Sealapex-WA, respectively (p < 0.05). Immunostaining for IL-6 and TNF-α was less intense for all groups in animals supplemented with melatonin, in most periods, except for the Endofill sealer (p < 0.05). Furthermore, Endofill-ME at 5 days and AH-Plus-ME at 30 days showed a higher percentage of mature collagen fibers compared to the Endofill-WA and AH Plus-WA, respectively (p < 0.05). Positive structures for von Kossa staining and birefringent to polarized light were observed only for Sealapex-WA and Sealapex-ME in all periods. CONCLUSIONS: It can be concluded that melatonin influences the tissue response to endodontic sealers, modulating the inflammatory and reparative process.

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The aim of this study was to evaluate the influence of liver fibrosis (LF) on the expression of Toll-like receptors (TLR) 2 and 4 in apical periodontitis (AP) in Wistar rats. Forty Wistar rats were allocated in the following groups (n = 10): C-control; AP-apical periodontitis; LF-liver fibrosis; AP + LF-rats with AP and LF. LF and AP were induced by established methodologies. Histological, bacteriological, and immunohistochemical analyses were performed according to pre-established scores. For comparisons between AP and AP + LF groups, the Mann-Whitney test was used (P < .05). The livers of the LF and AP + LF groups showed generalized portal inflammatory infiltrate and collagen fibers confirming the presence of LF. Histopathological analysis in the maxilla of the AP + LF group showed areas of necrosis comprising the entire dental pulp and periapical tissue surrounded by a more intense inflammatory infiltrate than observed in the AP group (P = 0.032). A significant number of specimens in the AP + LF group showed microorganisms beyond the apical foramen adhered to the extraradicular biofilm, demonstrating greater invasion compared to the AP group (P = .008). Immunohistochemical analysis showed a large number of cells immunoreactive for TLR2 and TLR4 in the AP + LF group, compared to the AP group (P < 0.05). Liver fibrosis favors the inflammation and contamination of microorganisms in apical periodontitis and triggers the expression of TLR2 and TLR4, modulating innate immunity response in periapical lesions.

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The Force-velocity (F-v) and Power-velocity (P-v) relationships quantify athlete's horizontal force production capacities during sprinting. Efforts are underway to enhance ecological validity for practitioners and sports coaches. This study provides detailed data comparison of a low frames per second setup (30 Hz; FPSlow) with splits from a high FPS camera to derive F-v and P-v relationships. Sixty-six sprints performed by 11 university track and field athletes (6 male, 5 female) were evaluated. Data were recorded using FPSlow, photocells, and a high-speed camera (240 Hz; MySprint). In the FPSlow setup, bias was 0.17s, and Limits of agreement was 0.09s compared to photocells. ICC was 1.00, and the coefficient of variation (CV) was 1.0% [0.8-1.1%]. Time acquisition comparison between MySprint and FPSlow setups revealed high consistency (ICC = 0.99) and low CV (2.9% [2.8-3.1%]). F-v profile variables exhibited biases from trivial to small, with ICC ranging from moderate to nearly perfect. CV ranged from 2.7% to 11.8%, and improved using the average of three sprints (CV between 1.8% and 8.6%). The 'simple method' applied to data from the low FPS video setup yielded kinetic and kinematic parameters comparable to those obtained by the validated previous method and photocells.

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Chronic total occlusion (CTO) percutaneous coronary intervention is a complex procedure and is associated with considerable risk of complications. Several success and complication scores have been developed; however, data regarding their external validation in other populations such as Latin America are scarce. This study aimed to evaluate the accuracy of the main predictors of success and complications in a broad cohort of procedures in the Latin American (LATAM) CTO registry. From April 2008 to December 2023, 3,706 consecutive procedures listed in the LATAM CTO registry were screened. Of these, 2,835 procedures had sufficient information to analyze the Multicenter CTO Registry in Japan (J-CTO); Prospective Global Registry for the Study of Chronic Total Occlusion Intervention (PROGRESS); Ostial location, Rentrop grade, and Age (ORA); Clinical and Lesion-related Score (CL-score); and EuroCTO Score (CASTLE) success scores. The complication scores were PROGRESS (MACE, mortality, and pericardiocentesis) and Outcomes, Patient health status, and Efficiency iN Chronic Total Occlusion hybrid procedures (OPEN-CTO),OPEN-CLEAN. The J-CTO and CASTLE scores demonstrated the highest areas under the curve (AUC) of 0.718 and 0.703, respectively. The AUC value for the CL-score was 0.685, whereas the PROGRESS score had an AUC of 0.598 and the ORA AUC was 0.545. The level of agreement between scores was low; only 4% of the procedures were classified as difficult or very difficult by all scores and <1% were classified as easy by all 5 scores. Of the complication scores, PROGRESS mortality (AUC 0.651) and PROGRESS MACE (AUC 0.588) showed the best performance, identifying groups with >10% event rate. These results may improve the selection of revascularization techniques, especially for patient demographics that are historically underrepresented in CTO research.

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Development of ventricular failure and pulmonary edema is associated with a worse prognosis in ST-elevation myocardial infarction (STEMI). We aimed to evaluate the prognostic ability of a novel classification combining lung ultrasound (LUS) and left ventricular outflow tract (LVOT) velocity time integral (VTI) in patients with STEMI. LUS and LVOT-VTI were performed within 24 h of admission in STEMI patients. A LUS combined with LVOT-VTI (LUV) classification was developed based on LUS with < or ≥ 3 positive zone scans, combined with LVOT-VTI > or ≤ 14. Patients were classified as A (< 3zones/ > 14 cm VTI), B (≥ 3zones/ > 14 cm VTI), C (< 3zones/ ≤ 14 cm VTI) and D (≥ 3zones/ ≤ 14 cm VTI). Primary outcome was occurrence of in-hospital mortality. Development of cardiogenic shock (CS) within 24 h was also assessed. A total of 308 patients were included. Overall in-hospital mortality was 8.8%, while mortality for LUV A, B, C, and D was 0%, 3%, 12%, and 45%, respectively. The area under the curve (AUC) for predicting in-hospital mortality was 0.915. Moreover, after exclusion of patients admitted in Killip IV, at each increasing degree of LUV, a higher proportion of patients developed CS within 24 h: LUV A = 0.0%, LUV B 5%, LUV C = 12.5% and LUV D = 30.8% (p < 0.0001). The AUC for predicting CS was 0.908 (p < 0.001). In a cohort of STEMI patients, LUV provided to be an excellent method for prediction of in-hospital mortality and development of CS. LUV classification is a fast, non-invasive and very user-friendly ultrasonographic evaluation method to stratify the risk of mortality and CS.

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BACKGROUND: Driving pressure has been suggested to be the main driver of ventilator-induced lung injury and mortality in observational studies of acute respiratory distress syndrome. Whether a driving pressure-limiting strategy can improve clinical outcomes is unclear. OBJECTIVE: To describe the protocol and statistical analysis plan that will be used to test whether a driving pressure-limiting strategy including positive end-expiratory pressure titration according to the best respiratory compliance and reduction in tidal volume is superior to a standard strategy involving the use of the ARDSNet low-positive end-expiratory pressure table in terms of increasing the number of ventilator-free days in patients with acute respiratory distress syndrome due to community-acquired pneumonia. METHODS: The ventilator STrAtegy for coMmunIty acquired pNeumoniA (STAMINA) study is a randomized, multicenter, open-label trial that compares a driving pressure-limiting strategy to the ARDSnet low-positive end-expiratory pressure table in patients with moderate-to-severe acute respiratory distress syndrome due to community-acquired pneumonia admitted to intensive care units. We expect to recruit 500 patients from 20 Brazilian and 2 Colombian intensive care units. They will be randomized to a driving pressure-limiting strategy group or to a standard strategy using the ARDSNet low-positive end-expiratory pressure table. In the driving pressure-limiting strategy group, positive end-expiratory pressure will be titrated according to the best respiratory system compliance. OUTCOMES: The primary outcome is the number of ventilator-free days within 28 days. The secondary outcomes are in-hospital and intensive care unit mortality and the need for rescue therapies such as extracorporeal life support, recruitment maneuvers and inhaled nitric oxide. CONCLUSION: STAMINA is designed to provide evidence on whether a driving pressure-limiting strategy is superior to the ARDSNet low-positive end-expiratory pressure table strategy for increasing the number of ventilator-free days within 28 days in patients with moderate-to-severe acute respiratory distress syndrome. Here, we describe the rationale, design and status of the trial.

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In Brazil and around the world, cardiovascular diseases are responsible for thousands of deaths every year. Among these, those related to ischemic heart disease stand out. From this perspective, to assist in the development of effective and timely health strategies and policies, this study aimed to analyze deaths from Acute Myocardial Infarction (AMI) reported in municipalities belonging to the I Regional Health Management (GERES) of Pernambuco in the years 2018 to 2021. This is a retrospective ecological study, carried out using data from the Mortality Information System. The variables used to describe deaths from AMI were: municipality of coverage, sex, age, color/race, education, marital status and place of death. The results showed a reduction in deaths due to heart attacks in the municipalities and years investigated. The variables studied showed a statistically significant association with the rates of deaths from AMI. The predominant profile of deaths from heart attacks was among residents of the reef, male, mixed race, with one to three years of education, aged 75 and over and married. This study makes important contributions by describing the profile of deaths due to AMI in the I GERES municipalities of Pernambuco and can help guide public health strategies. (AU)

No Brasil e no Mundo, as doenças cardiovasculares são responsáveis por milhares de mortes todos os anos. Entre tais, destacam-se aqueles relacionados à doença isquêmica do coração. Nesta perspectiva, para auxiliar na elaboração de estratégias e políticas de saúde eficazes e oportunas, este estudo teve como objetivo analisar as mortes por Infarto Agudo do Miocárdio notificadas nos municípios pertencentes à I Gerência Regional de Saúde (GERES) de Pernambuco nos anos de 2018 a 2021. Trata-se de um estudo ecológico retrospectivo, realizado através de dados do Sistema de Informação de Mortalidade. A variáveis utilizadas para a descrição das mortes por IAM foram: município de abrangência, sexo, idade, cor/raça, escolaridade, estado civil e local de ocorrência do óbito. Os resultados mostraram redução dos óbitos por Infarto nos municípios e anos investigados. As variáveis estudadas apresentaram associação estatisticamente significativa com as taxas de mortes por IAM. O perfil predominante das mortes por infarto foi entre os residentes do recife, sexo masculino, pardos, escolaridade de um a três anos, com faixa etária de 75 anos e mais e com estado civil casado. Este estudo traz contribuições importantes ao descrever o perfil dos óbitos por IAM nos municípios da I GERES de Pernambuco, podendo auxiliar no direcionamento de estratégias em saúde pública. (AU)

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The aim of this study was to investigate the influence of systemic antibiotic therapy on the development and progression of induced apical periodontitis (AP) in Wistar rats. Fifty-six rats were submitted to pulp exposure of the lower left first molar for the induction of AP. On the same day, intraperitoneal antibiotic therapy was administered once a day, for 15 days, until euthanasia. The groups were formed according to the different treatments (n = 8): C-control; GEN-treated with gentamicin (10 mg/Kg); AC-treated with amoxicillin (100 mg/Kg); MZ-treated with metronidazole (40 mg/Kg); AMP-treated with ampicillin (100 mg/Kg); AMC group-treated with amoxicillin + clavulanic acid (100 mg/kg); CLI-treated with clindamycin (60 mg/kg). After euthanasia, the jaws were collected and processed for (1) histological and histometric analysis using hematoxylin and eosin staining, (2) analysis of collagen fibers using Picrosirius Red staining and (3) bacteriological analysis using Brown-Brenn staining. The data were analyzed statistically (p < 0.05). AP induction was confirmed in all groups. The AMC group had the lower intensity of inflammatory infiltrate (p = 0.028) and less periapical bone resorption compared to control (p = 0.006). Regarding collagen maturation, PSR staining revealed a predominance of mature collagen fibers in all groups. The AC and AMC groups had the lower amount of mature fibers and the highest amount of immature fibers, compared to all other groups (p < 0.001). All groups showed bacterial contamination; however, the AC and AMC groups showed a lower extent of bacterial contamination compared to the control (p < 0.001). It can be concluded that systemic antibiotic therapy influences the development and progression of induced AP.

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OBJECTIVES: This systematic review and meta-analysis (SRM) aimed to evaluate the efficacy of laser phototherapy (LPT) on the reduction in postoperative pain (PP) of endodontic origin after conventional/non-surgical reintervention of root canals. METHODS: This SRM was registered with PROSPERO (CRD42021243500) and followed the guidelines of the Preferred Reporting Items for Systematic Reviews and Meta-Analysis. Meta-analysis was conducted using R software with the "META" package, the mean difference (MD) measure of effect was calculated, and the fixed effect model was applied with a 95% confidence interval (CI). The Cochrane collaboration scale was used to assess the risk of bias and the GRADE tool to assess the quality of evidence. RESULTS: Initially, 1028 articles were found, and five articles were included. Most studies were classified as "low" risk of bias. Of the five clinical studies, four showed a significant decrease in PP after endodontic reintervention in the LPT groups compared to the control group, especially in the first four days after the intervention. In symptomatic teeth with multiple roots, LPT led to less PP at 24 h (MD -0.52 [-1.03; -0.02] p = .04). However, no significant difference between the groups was found at 48 and 72 h (p > .05). The certainty of the evidence was classified as low. CONCLUSION: Despite the limitations of this SRM, LPT was shown to be a promising alternative for reducing and controlling PP in conventional endodontic reintervention. CLINICAL SIGNIFICANCE: The use of LPT in endodontic reintervention may be a safe and promising alternative to clinically efficacious agent for use in the management of PP in this procedure.

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BACKGROUND: Guide catheter extensions (GCEs) increase support and facilitate equipment delivery, but aggressive instrumentation may be associated with a higher risk of complications. AIM: Our aim was to assess the impact of GCEs on procedural success and complications in patients submitted to chronic total occlusion (CTO) percutaneous coronary intervention (PCI). METHODS: We analyzed data from the multicenter LATAM CTO Registry. Procedural success was defined as <30% residual stenosis and TIMI 3 distal flow. Major adverse cardiac and cerebrovascular events (MACCE) was defined as the composite of all-cause death, myocardial infarction, target vessel revascularization, and stroke. Propensity score matching (PSM) was used to compare outcomes with and without GCE use. RESULTS: From August 2010 to August 2021, 3049 patients were included. GCEs were used in 438 patients (14.5%). In unadjusted analysis, patients in the GCE group were older and had more comorbidities. The median J-CTO score and its components were higher in the GCE group. After PSM, procedural success was higher with GCE use (87.7% vs. 80.5%, p = 0.007). The incidence of coronary perforation (odds ratio [OR]: 1.46, 95% confidence interval [CI]: 0.78-2.71, p = 0.230), bleeding (OR: 1.99, 95% CI: 0.41-2.41, p = 0.986), in-hospital death (OR: 1.39, 95% CI: 0.54-3.62, p = 0.495) and MACCE (OR: 1.07, 95% CI: 0.52-2.19, p = 0.850) were similar in both groups. CONCLUSION: In a contemporary, multicenter cohort of patients undergoing CTO PCI, GCEs were used in older patients, with more comorbidities and complex anatomy. After PSM, GCE use was associated with higher procedural success, and similar incidence of adverse outcomes.

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There is a lack of evidence on the additional benefits of combining caffeine (CAF) and creatine (CRE) supplementation on anaerobic power and capacity. Thus, the aim of the present study was to test the effects of combined and isolated supplementation of CAF and CRE on anaerobic power and capacity. Twenty-four healthy men performed a baseline Wingate anaerobic test and were then allocated into a CRE (n = 12) or placebo (PLA; n = 12) group. The CRE group ingested 20 g/day of CRE for 8 days, while the PLA group ingested 20 g/day of maltodextrin for the same period. On the sixth and eighth days of the loading period, both groups performed a Wingate anaerobic test 1 hr after either CAF (5 mg/kg of body mass; CRE + CAF and PLA + CAF conditions) or PLA (5 mg/kg of body mass of cellulose; CRE + PLA and PLA + PLA conditions) ingestion. After the loading period, changes in body mass were greater (p < .05) in the CRE (+0.87 ± 0.23 kg) than in the PLA group (+0.13 ± 0.27 kg). In both groups, peak power was higher (p = .01) in the CAF (1,033.4 ± 209.3 W) than in the PLA trial (1,003.3 ± 204.4 W), but mean power was not different between PLA and CAF trials (p > .05). In conclusion, CAF, but not CRE ingestion, increases anaerobic power. Conversely, neither CRE nor CAF has an effect on anaerobic capacity.

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The aim of this systematic review and meta-analysis (SRM) was to evaluate whether bioceramic sealers have better penetration capacity in dentinal tubules and antimicrobial activity when compared to AH Plus® sealer. This SRM was recorded in the Open Science Framework database and followed the guidelines of the PRISMA 2020. Five databases were searched by two independent reviewers. Only in vitro studies that evaluated the effects of bioceramic sealers on dentinal tubule penetration and antimicrobial activity outcomes compared to AH Plus® sealer were included. Meta-analysis was conducted using R software, using the effect measure of the standardized mean difference (SMD) and inverse variance method. A modified Joanna Briggs Institute's Checklist was used for the risk of bias assessment. A total of 1486 studies were identified, and only 54 studies that fulfilled our eligibility criteria were included in this review. There was no statistical difference between the sealers evaluated for dentinal tubule penetration, in the thirds evaluated: coronal SMD 0.58 [0.14; 1.31], p = 0.12; middle SMD 0.07 [0.54; 0.39], p = 0.75; and apical SMD 0.08 [0.73; 0.56], p = 0.80. Both sealers demonstrated similar antimicrobial action (SMD [3.42; 5.32], p = 0.67 and SMD 0.67 [1.89; 0.55], p = 0.28). The studies presented a low risk of bias. Based on the in vitro studies included and according to the limitations of the present review, the data suggest that bioceramic and AH Plus® sealers present similar penetration capacity in dentinal tubules and antimicrobial effect, making them suitable materials to be considered in clinical practice.

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ABSTRACT Background: Driving pressure has been suggested to be the main driver of ventilator-induced lung injury and mortality in observational studies of acute respiratory distress syndrome. Whether a driving pressure-limiting strategy can improve clinical outcomes is unclear. Objective: To describe the protocol and statistical analysis plan that will be used to test whether a driving pressure-limiting strategy including positive end-expiratory pressure titration according to the best respiratory compliance and reduction in tidal volume is superior to a standard strategy involving the use of the ARDSNet low-positive end-expiratory pressure table in terms of increasing the number of ventilator-free days in patients with acute respiratory distress syndrome due to community-acquired pneumonia. Methods: The ventilator STrAtegy for coMmunIty acquired pNeumoniA (STAMINA) study is a randomized, multicenter, open-label trial that compares a driving pressure-limiting strategy to the ARDSnet low-positive end-expiratory pressure table in patients with moderate-to-severe acute respiratory distress syndrome due to community-acquired pneumonia admitted to intensive care units. We expect to recruit 500 patients from 20 Brazilian and 2 Colombian intensive care units. They will be randomized to a driving pressure-limiting strategy group or to a standard strategy using the ARDSNet low-positive end-expiratory pressure table. In the driving pressure-limiting strategy group, positive end-expiratory pressure will be titrated according to the best respiratory system compliance. Outcomes: The primary outcome is the number of ventilator-free days within 28 days. The secondary outcomes are in-hospital and intensive care unit mortality and the need for rescue therapies such as extracorporeal life support, recruitment maneuvers and inhaled nitric oxide. Conclusion: STAMINA is designed to provide evidence on whether a driving pressure-limiting strategy is superior to the ARDSNet low-positive end-expiratory pressure table strategy for increasing the number of ventilator-free days within 28 days in patients with moderate-to-severe acute respiratory distress syndrome. Here, we describe the rationale, design and status of the trial.

RESUMO Contexto: Em estudos observacionais sobre a síndrome do desconforto respiratório agudo, sugeriu-se que a driving pressure é o principal fator de lesão pulmonar induzida por ventilador e de mortalidade. Não está claro se uma estratégia de limitação da driving pressure pode melhorar os desfechos clínicos. Objetivo: Descrever o protocolo e o plano de análise estatística que serão usados para testar se uma estratégia de limitação da driving pressure envolvendo a titulação da pressão positiva expiratória final de acordo com a melhor complacência respiratória e a redução do volume corrente é superior a uma estratégia padrão envolvendo o uso da tabela de pressão positiva expiratória final baixa do protocolo ARDSNet, em termos de aumento do número de dias sem ventilador em pacientes com síndrome do desconforto respiratório agudo devido à pneumonia adquirida na comunidade. Métodos: O estudo STAMINA (ventilator STrAtegy for coMmunIty acquired pNeumoniA) é randomizado, multicêntrico e aberto e compara uma estratégia de limitação da driving pressure com a tabela de pressão positiva expiratória final baixa do protocolo ARDSnet em pacientes com síndrome do desconforto respiratório agudo moderada a grave devido à pneumonia adquirida na comunidade internados em unidades de terapia intensiva. Esperamos recrutar 500 pacientes de 20 unidades de terapia intensiva brasileiras e duas colombianas. Eles serão randomizados para um grupo da estratégia de limitação da driving pressure ou para um grupo de estratégia padrão usando a tabela de pressão positiva expiratória final baixa do protocolo ARDSnet. No grupo da estratégia de limitação da driving pressure, a pressão positiva expiratória final será titulada de acordo com a melhor complacência do sistema respiratório. Desfechos: O desfecho primário é o número de dias sem ventilador em 28 dias. Os desfechos secundários são a mortalidade hospitalar e na unidade de terapia intensiva e a necessidade de terapias de resgate, como suporte de vida extracorpóreo, manobras de recrutamento e óxido nítrico inalado. Conclusão: O STAMINA foi projetado para fornecer evidências sobre se uma estratégia de limitação da driving pressure é superior à estratégia da tabela de pressão positiva expiratória final baixa do protocolo ARDSnet para aumentar o número de dias sem ventilador em 28 dias em pacientes com síndrome do desconforto respiratório agudo moderada a grave. Aqui, descrevemos a justificativa, o desenho e o status do estudo.

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O estudo objetivou reunir evidências de precisão e validade da Escala Comportamental De Ansiedade Aos Exames (ECAE) em contexto brasileiro. Especificamente, verificou-se o padrão de relação com ansiedade cognitiva de provas. Realizaram-se dois estudos com estudantes universitários. No primeiro (n = 223; M idade = 21,57; DP = 5,35), foi realizada a adaptação da ECAE e uma análise fatorial exploratória, sugerindo-se uma estrutura bifatorial. No segundo (n = 239; M idade = 21,68; DP = 3,71), por meio de uma análise fatorial confirmatória a estrutura teórica composta por dois fatores foi corroborada. Ademais, realizou-se a correlação de Pearson (r), evidenciando relações positivas entre os fatores da ECAE (dificuldade de execução e conduta de evitação) e a ansiedade cognitiva de provas, indicando validade convergente. Conclui-se que a ECAE reuniu adequadas evidências psicométricas, podendo ser uma ferramenta útil na avaliação de estudantes universitários com elevada ansiedade de provas, além de contribuir para a compreensão e desenvolvimento de estratégias interventivas relacionadas à temática da ansiedade de provas.

The study aimed to gather evidence of accuracy and validity of the Behavioral Test Anxiety Scale (BTAS) in the Brazilian context. Specifically, the study examined its relationship with cognitive test anxiety. Two studies were conducted with university students. In the first study (n = 223; Mage = 21.57; SD = 5.35), the ECAE was adapted, and an exploratory factor analysis was performed, suggesting a bifactorial structure. In the second study (n = 239; Mage = 21.68; SD = 3.71), a confirmatory factor analysis confirmed the theoretical structure composed of two factors. Additionally, Pearson correlation (r) was used, showing positive relationships between the factors of the ECAE (execution difficulty and avoidance behavior) and cognitive test anxiety, indicating convergent validity. It can be concluded that the ECAE gathered adequate psychometric evidence and can be a useful tool in assessing university students with high-test anxiety, as well as contributing to the understanding and development of intervention strategies related to the theme of test anxiety.

El estudio tuvo como objetivo reunir evidencias de precisión y validez de la Escala Conductual de Ansiedad Frente a los Exámenes (ECAE) en el contexto brasileño. Específicamente, se examinó su relación con la ansiedad cognitiva en pruebas. Se llevaron a cabo dos estudios con estudiantes universitarios. En el primer estudió (n = 223; Medad = 21,57; DE = 5,35), se adaptó la ECAE y se realizó un análisis factorial exploratorio, sugiriendo una estructura bifactorial. En el segundo estudió (n = 239; Medad = 21,68; DE = 3,71), a través de un análisis factorial confirmatorio, se confirmó la estructura teórica compuesta por dos factores. Además, se realizó la correlación de Pearson (r), evidenciando relaciones positivas entre los factores de la ECAE (dificultad de ejecución y conducta de evitación) y la ansiedad cognitiva en pruebas, lo que indica validez convergente. Se concluye que la ECAE reunió adecuadas evidencias psicométricas y puede ser una herramienta útil en la evaluación de estudiantes universitarios con elevada ansiedad en pruebas, además de contribuir a la comprensión y desarrollo de estrategias de intervención relacionadas con la temática de la ansiedad en pruebas.

RESUMO

Objetivo: Analisar a associação entre a atividade física (AF) e comportamento sedentário (CS) com o risco cardiovascular (RCV) em adolescentes. Metodologia: Pesquisa quantitativa, observacional, transversal. Foram convidados adolescentes de 10 a 17 anos de idade, participantes dos Projetos "Esporte sem Fronteiras" e "Academia & Futebol". Para avaliar a AF e o CS utilizou-se o Physical Activity Questionnaire for Older Children e questões da Pesquisa Nacional de Saúde do Escolar, respectivamente. O RCV foi definido por variáveis pragmáticas e não-invasivas, como gordura corporal, pressão arterial sistólica e diastólica, consumo máximo de oxigênio. Resultados: O escore da AF foi inversamente associada ao VO2máx. inverso para o sexo masculino e feminino (respectivamente, r = -0,47; p = 0,0001 e r = -0,41; p = 0,0223) e ao RCV agrupado para o sexo masculino (r = -0,38; p = 0,0026) nas análises brutas, com ajuste pela AF, idade e tempo sentado, a correlação entre AF e VO2máx. inverso manteve-se para o sexo masculino e feminino (respectivamente, r = -0,43; p= 0,0005 e r = -0,37; p = 0,0477) e com RCV agrupado apenas para o sexo masculino (r = -0,36 p = 0,0055). Encontrou-se associação positiva entre o tempo sentado e o VO2máx. inverso no sexo masculino (r = 0,31; p = 0,0136). Conclusão: Esses achados podem contribuir para proposição de intervenções/ações de políticas públicas focadas no aumento da AF e diminuição do tempo em CS, considerando-se potencial contribuição para a saúde cardiovascular em adolescentes.

Objective: To analyze the association between physical activity (PA) and sedentary behavior (SB) with cardiovascular risk (CVR) in adolescents. Methodology: Quantitative, observational, cross-sectional study. Adolescents aged between 10 and 17 years were invited to take part in the "Sport without Borders" and "Academy & Football" projects. The Physical Activity Questionnaire for Older Children and questions from the National School Health Survey were used to assess PA and SB, respectively. CVR was defined by pragmatic and non-invasive variables such as body fat, systolic and diastolic blood pressure, maximum oxygen consumption. Results: PA score was inversely associated VO2máx. inverse for males and females (respectively, r = -0.47; p = 0.0001 and r = -0.41; p = 0.0223) and with grouped CVR for males (r = -0.38; p = 0.0026) in the crude analyses, with adjustment for PA, age and sitting time, the correlation between PA and VO2máx. inverse was maintained for males and females (respectively, r = -0.43; p= 0.0005 and r = -0.37; p = 0.0477) and with CRV grouped only for males (r = -0.36 p = 0.0055). A positive association was found between sitting time and VO2máx. Inverse in males (r = 0.31; p = 0.0136). Conclusion: These findings may contribute to proposing public policy interventions/actions focused on increasing PA and decreasing sitting time, considering the potential contribution to cardiovascular health in adolescents.

Objetivo: Analizar la asociación entre la actividad física (AF) y el comportamiento sedentario (SB) con el riesgo cardiovascular (RCV) en adolescentes. Metodología: Estudio cuantitativo, observacional, transversal invitados adolescentes de entre 10 y 17 años a participar en los proyectos "Deporte sin fronteras" y "Academia y fútbol". Usamos el Physical Activity Questionnaire for Older Children y preguntas de la Encuesta Nacional de Salud Escolar para evaluar la AF y la SB, respectivamente. La RCV se definió mediante variables pragmáticas y no invasivas como la grasa corporal, la presión arterial y el consumo máximo de oxígeno. Resultados: La puntuación de AF se asoció inversamente con el VO2máx. inverso para varones y mujeres (respectivamente, r = -0,47; p = 0,0001 y r = -0,41; p = 0,0223) y con el RCV agrupado para varones (r = -0,38; p = 0,0026) en los análisis crudos, con ajuste por AF, edad y tiempo sentado, la correlación entre AF y VO2máx. inverso se mantuvo para varones y mujeres (respectivamente, r = -0,43; p= 0,0005 y r = -0,37; p = 0,0477) y con CRV agrupado sólo para varones (r = -0,36 p = 0,0055). Se encontró una asociación positiva entre el tiempo sentado y el VO2máx. inverso en los varones (r = 0,31; p = 0,0136). Conclusión: Estos resultados pueden contribuir a proponer intervenciones/acciones de política pública centradas en el aumento de la AF y la disminución del tiempo sentado, teniendo en cuenta la posible contribución a la salud cardiovascular en los adolescentes.

Assuntos