Abstract
Both delayed and premature liberation from mechanical ventilation (MV) are associated with increased morbimortality. Positive pressure ventilation exerts beneficial effects in individuals with cardiogenic pulmonary edema; inspiratory fall in intra-thoracic pressure during spontaneous breathing trial (SBT), in its turn, may precipitate cardiac dysfunction through abrupt increase in venous return and in left ventricular afterload.
Highlights
Both delayed and premature liberation from mechanical ventilation (MV) are associated with increased morbimortality
Positive pressure ventilation exerts beneficial effects in individuals with cardiogenic pulmonary edema; inspiratory fall in intra-thoracic pressure during spontaneous breathing trial (SBT), in its turn, may precipitate cardiac dysfunction through abrupt increase in venous return and in left ventricular afterload
There was a total of 170 SBTs procedures; SBT failure eventuated in 28 (16.4%)
Summary
Both delayed and premature liberation from mechanical ventilation (MV) are associated with increased morbimortality. Positive pressure ventilation exerts beneficial effects in individuals with cardiogenic pulmonary edema; inspiratory fall in intra-thoracic pressure during spontaneous breathing trial (SBT), in its turn, may precipitate cardiac dysfunction through abrupt increase in venous return and in left ventricular afterload
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