Published in:
01-01-2007 | Editorial
It's time to measure intra-abdominal pressure to optimize hemodynamics!
Authors:
Paolo Pelosi, Enrico Calzia, Pierre Asfar
Published in:
Intensive Care Medicine
|
Issue 1/2007
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Excerpt
In the current issue of
Intensive Care Medicine, Duperret et al. [
1] present an interesting article on the effects of increased intra-abdominal pressure (IAP) on arterial pressure variations induced by positive-pressure ventilation. The experiments were performed on seven healthy anesthetized pigs, mechanically ventilated at constant tidal volume and in absence of positive end-expiratory pressure. Systolic pressure variations (SPV), pulse pressure variations and stroke volume variations were recorded with IAP from 0 to 30 mmHg in normovolemic and severe hypovolemic conditions (mean arterial pressure 60 mmHg). As expected, SPV, pulse pressure variations, and stroke volume variations increased during hypovolemia, but more importantly they also increased with higher IAP simultaneously with a marked increase in pleural pressure swings associated with tidal mechanical breaths. The authors conclude that SPV may be misleading in assessing volemia in patients with increased IAP. …