Echocardiographic evaluation during weaning from mechanical ventilation

• Autor(a) principal: Schifelbain, Luciele Medianeira
• Data de Publicação: 2011
• Outros Autores: Vieira, Silvia Regina Rios, Brauner, Janete Salles, Pacheco, Deise Mota, Naujorks, Alexandre Antonio
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Clinics
• Texto Completo: https://www.revistas.usp.br/clinics/article/view/19461
• topic: Echocardiography; Doppler echocardiogram; Cardiorespiratory variables; Ventilator weaning; Artificial ventilation

INTRODUCTION: Echocardiographic, electrocardiographic and other cardiorespiratory variables can change during weaning from mechanical ventilation. OBJECTIVES: To analyze changes in cardiac function, using Doppler echocardiogram, in critical patients during weaning from mechanical ventilation, using two different weaning methods: pressure support ventilation and T-tube; and comparing patient subgroups: success vs. failure in weaning. METHODS: Randomized crossover clinical trial including patients under mechanical ventilation for more than 48 h and considered ready for weaning. Cardiorespiratory variables, oxygenation, electrocardiogram and Doppler echocardiogram findings were analyzed at baseline and after 30 min in pressure support ventilation and T-tube. Pressure support ventilation vs. T-tube and weaning success vs. failure were compared using ANOVA and Student's t-test. The level of significance was p