Multivariate Analyses
Mostrando 1-12 de 565 artigos, teses e dissertações.
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1. The relationship between premature ventricular complexes and index of cardiac-electrophysiological balance
SUMMARY OBJECTIVE: Premature ventricular complexes are common in healthy individuals’ ambulatory monitoring. The index of cardiac-electrophysiological balance may predict malignant ventricular arrhythmias. This study investigated the relation between Premature ventricular complex burden and index of cardiac-electrophysiological balance in 24-h Holter moni
Revista da Associação Médica Brasileira. Publicado em: 2023
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2. Risk factors for failure of subclavian vein catheterization: a retrospective observational study
Abstract Background and objectives: The aim of this study was to analyze risk factors for failure of subclavian vein catheterization. Methods: A retrospective analysis of 1562 patients who underwent subclavian vein puncture performed by the same experienced operator at Peking University Cancer Hospital from January 1, 2016 to January 1, 2019 was conducted.
Brazilian Journal of Anesthesiology. Publicado em: 2022
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3. Prevalence of COVID-19 in medical school and residency in Porto Alegre, RS
SUMMARY OBJECTIVE: A multicentric, cross-sectional study was carried out to determine the prevalence and risk factors for Coronavirus disease 2019 in medical students and residents from four universities and affiliated hospitals in Brazil. METHODS: A survey about contamination risk and symptoms was sent to all participants through email and WhatsApp. Preva
Revista da Associação Médica Brasileira. Publicado em: 2022
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4. Evaluation of sediment contamination by urban sewage in a stretch of Capibaribe River, Pernambuco, Brazil
Anthropic activities are responsible for the increase in environmental contamination, especially in aquatic systems, demanding studies to assess and monitor contamination levels in different water bodies. We have done a chemical characterization of eleven sediments in order to evaluate the level of contamination by domestic sewage from the Capibaribe River,
Química Nova. Publicado em: 2022
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5. The clinical impact of the systolic volume variation guided intraoperative fluid administration regimen on surgical outcomes after pancreaticoduodenectomy: a retrospective cohort study
Abstract Background Pancreaticoduodenectomy is associated with high morbidity. Many preoperative variables are risk factors for postoperative complications, but they are primarily non-modifiable. It is not clear whether an intraoperative goal-directed fluid regimen might be associated with fewer postoperative surgical complications compared to current conse
Brazilian Journal of Anesthesiology. Publicado em: 2022
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6. A Clinical Risk Analysis of Postoperative Nausea and Vomiting After Colorectal Cancer Surgery
Abstract Objective Postoperative nausea and vomiting (PONV) is a frequent complication following colorectal surgery. The present study investigated the risk factors for PONV after colorectal cancer surgery. Methods A retrospective study of 204 patients who underwent surgery for colorectal cancer was conducted. Univariate and multivariate analyses were perf
Journal of Coloproctology (Rio de Janeiro). Publicado em: 2022
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7. Common mental disorders among medical students: systematic review and meta-analysis of Brazilian studies
ABSTRACT BACKGROUND: Common mental disorders (CMDs) have been correlated with consequences in different domains of life. OBJECTIVE: To summarize the prevalence rates of CMDs and factors associated with them among students at Brazilian medical schools. DESIGN AND SETTING: Systematic review and meta-analysis of studies developed in Brazilian medical schools
Sao Paulo Medical Journal. Publicado em: 2022
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8. Predictive value of oxidative, antioxidative, and inflammatory status for left ventricular systolic recovery after percutaneous coronary intervention for ST-segment elevation myocardial infarction
SUMMARY OBJECTIVE: This study aimed to evaluate the association between left ventricular ejection fraction recovery and the total oxidant status, total antioxidant capacity, and high-sensitivity C-reactive protein levels. METHODS: A total of 264 ST-elevation myocardial infarction patients were classified into two groups according to baseline and 6-month fo
Revista da Associação Médica Brasileira. Publicado em: 2022
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9. Risk factors for mediolateral episiotomy at a tertiary hospital: a cross-sectional study
SUMMARY OBJECTIVE: The main aim of this study was to assess the associated factors for selective mediolateral episiotomy at a tertiary, academic hospital. METHODS: A retrospective cohort analysis between 2017 and 2019 was performed. The primary outcome was the prevalence of selective mediolateral episiotomy. Independent variables were maternal, intrapartum
Revista da Associação Médica Brasileira. Publicado em: 2022
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10. Predictive factors for success after supine percutaneous nephrolithotomy: an analysis of 961 patients
SUMMARY OBJECTIVE: The aim of this study was to evaluate the predictive factors for success following percutaneous nephrolithotomy in the supine position. METHODS: Patients who underwent percutaneous nephrolithotomy in the supine position from June 2011 to October 2018 were evaluated. Age, sex, body mass index, the American Society of Anesthesiologists phy
Revista da Associação Médica Brasileira. Publicado em: 2022
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11. Assessment of Urban Contamination by Sewage in Sediments from Ipojuca River in Caruaru City, Pernambuco, Brazil
The Ipojuca River is considered the third most polluted river in Brazil due to the intense anthropogenic activities in the surrounding urban areas. The most important effluent is sewage discharge, which is responsible for considerable contamination. Traditional analyses (infrared spectroscopy, organic matter (OM), elemental analysis and granulometry) and adv
Journal of the Brazilian Chemical Society. Publicado em: 2022
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12. Spectroscopic techniques combined with chemometrics to study organic matter in tropical soils with different degrees of pedogenetic evolution
Understanding of the organomineral interactions in soil can elucidate the humic substances (HS) formation and the humification process. This study aimed to structurally characterize the humic acids (HA) formed in tropical soils with different pedogenesis degrees. The HA fraction was extracted from soil samples in the superficial horizons of an Inceptisol and
Química Nova. Publicado em: 2022