Postoperative Nausea and Vomiting Clinical Trial
Official title:
Comparison of Different EtCO2 Levels in Preventing Postoperative Nausea and Vomiting in Gynecological Patients Undergoing Laparoscopic Surgery
We aimed to evaluate the different ETCO2 levels (with the help of ultrasonographic optic nerve sheath diameter) in preventing gynecological laparoscopic surgeons' postoperative nausea induced by intracranial pressure change due to pneumoperitoneum and trandelenburg position.
Although gynecologic laparoscopic surgery is a preferred technique in recent years due to its minimally invasive technique, the incidence of postoperative nausea and vomiting (PONV) is 53-72%. In such operations, intra-abdominal pressure due to trandelenburg position and carbondioxide insufflation causes intra-cranial venous obstruction and intra-cranial pressure increase. In addition, intra-cranial blood flow and ultimately intra-cranial pressure increase due to gravity and increased venous return resistance (peripheral vascular resistance). Intra-cranial CO2 concentration increase results in intra-cranial vascular dilatation, followed by ICP increase. High intracranial pressure may cause an increase in the incidence of PONV after gynecological laparoscopic surgery. Measurement of optic nerve sheath diameter with USG, a noninvasive method for detecting intracranial pressure increases, has been used frequently in intensive care units in recent years. we aimed to evaluate the different ETCO2 levels (during the operation with 10 minute intervals, and also with the help of ultrasonographic optic nerve sheath diameter) in preventing gynecological laparoscopic surgeons' postoperative nausea induced by intracranial pressure change due to pneumoperitoneum and trandelenburg position. ;
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