Effects Of Carbon Dioxide Pneumoperitoneum On Stroke Volume Variation

Objective:To observe whether the SVV changed during gynecologic laparoscopic surgery using noninvasive hemodynamic monitoring (FloTrac/Vigileo APCO system).Method:Between Dec 2008 and Mar 2009,patients undergoing scheduled laparoscopic surgery for benign gynecologic indications were recruited for perioperative hemodynamic monitoring by FloTrac/Vigileo APCO system,After induction of general anesthesia,The patients received fluid therapy depending on SVV,till achieve the goal of SVV＜10%,baseline hemodynamic parameters were obtained.A pneumoperitoneum(CO₂) was created to 12 mm Hg.Record the Pmax,MAP,HR,CO and SVV at T0(immediately before insufflation),T1 (1min after insufflation),T2(5min after insufflation),T3(10min after insufflation),T4(15minafter insufflation),T5(20minafter insufflation), T6(30min after insufflation),T7(immediately before desufflation), T8(immediately after desufflation).Data are presented as mean±SE, Analyses were performed as a paired Student's t-test.Results:Insufflation significantly affected the Pmax,the mean arterial pressure and the CO,especially during the 10 min postinsufflation,this effect on the heart rate was not obvious.There is no significant difference in SVV. Conclusion:the Pneumoperitoneum has no effect on the SVV...