The value of pulse pressure and stroke volume variation as predictors of fluid responsiveness during open chest surgery.

摘要: Summary We investigated the ability of pulse pressure variation and stroke volume to predict fluid responsiveness during mechanical ventilation in patients undergoing open chest surgery by comparing their respective correlations with cardiac output changes induced leg elevation. Serial elevation manoeuvres were performed before after sternotomy 15 scheduled for elective off-pump coronary bypass surgery. Under closed conditions, both correlated well (r = 0.856, p = 0.002 r = 0.897, p = 0.0012, respectively). These lost parameters following sternotomy. Our data show that are valid predictors under conditions but this property no longer holds when is open.