Julian M Brown1. 1. Intensive Care Unit, Princess Alexandra Hospital, Brisbane, Australia.
Abstract
OBJECTIVE: To assess the accuracy of echocardiography for hemodynamic monitoring. DATA SOURCES: A computerized MEDLINE search was used with the following search headings: monitoring (physiologic and intra-operative) and both echocardiography and transesophageal echocardiography. A number of studies were obtained from the reference lists of cardiology reviews and textbooks. STUDY SELECTION: Studies that were designed to assess the accuracy of hemodynamic monitoring. DATA EXTRACTION: From the selected studies, the accuracy of different techniques for measuring preload and cardiac output was compared. DATA SYNTHESIS: Hypovolemia can be detected accurately by measuring left ventricular end-diastolic area. At high preload, Doppler-based methods are more accurate, although further studies in critical care patients are needed. Cardiac output is best measured by measuring Doppler flow, preferably across the aortic valve. CONCLUSIONS: Echocardiography can be used to make accurate hemodynamic measurements; however, training is required. Further studies are needed to validate these methods in the management of critically ill patients.
OBJECTIVE: To assess the accuracy of echocardiography for hemodynamic monitoring. DATA SOURCES: A computerized MEDLINE search was used with the following search headings: monitoring (physiologic and intra-operative) and both echocardiography and transesophageal echocardiography. A number of studies were obtained from the reference lists of cardiology reviews and textbooks. STUDY SELECTION: Studies that were designed to assess the accuracy of hemodynamic monitoring. DATA EXTRACTION: From the selected studies, the accuracy of different techniques for measuring preload and cardiac output was compared. DATA SYNTHESIS: Hypovolemia can be detected accurately by measuring left ventricular end-diastolic area. At high preload, Doppler-based methods are more accurate, although further studies in critical care patients are needed. Cardiac output is best measured by measuring Doppler flow, preferably across the aortic valve. CONCLUSIONS: Echocardiography can be used to make accurate hemodynamic measurements; however, training is required. Further studies are needed to validate these methods in the management of critically illpatients.
Authors: Heloisa A Gaspar; Samira S Morhy; Alessandro C Lianza; Werther B de Carvalho; Jose L Andrade; Rogério R do Prado; Cláudio Schvartsman; Artur F Delgado Journal: BMC Med Educ Date: 2014-02-05 Impact factor: 2.463
Authors: Fernando Suparregui Dias; Ederlon Alves de Carvalho Rezende; Ciro Leite Mendes; João Manoel Silva; Joel Lyra Sanches Journal: Rev Bras Ter Intensiva Date: 2014 Oct-Dec