Ji-Seon Son1, Ji-Yun Oh2, Seonghoon Ko3. 1. Department of Anesthesiology and Pain Medicine and Research Institute of Clinical Medicine-Biomedical Research Institute, Chonbuk National University Medical School, Jeonju, South Korea. 2. Department of Anesthesiology and Pain Medicine, Presbyterian Medical Center, Jeonju, South Korea. 3. Department of Anesthesiology and Pain Medicine and Research Institute of Clinical Medicine-Biomedical Research Institute, Chonbuk National University Medical School, Jeonju, South Korea. shko@jbnu.ac.kr.
Abstract
BACKGROUND:Laparoscopic surgery is associated with a high incidence of postoperative nausea and vomiting (PONV). The use of CO2 pneumoperitoneum has been proposed as a potential cause of high PONV incidence. However, intraoperative hypercarbia may be related to enhanced perfusion to the main effector sites for PONV, including the brain and gastrointestinal tract. In this study, we investigated whether an increase in intraoperative CO2 partial pressure in arterial blood (PaCO2) reduces the incidence of PONV. METHODS: This study enrolled 400 female patients aged 20-60 years who were undergoinglaparoscopic gynecologic surgery. The patients were allocated randomly to one of three groups with the following intraoperative PaCO2 levels: 36-40 mmHg (Group 1), 41-45 mmHg (Group 2), or 46-50 mmHg (Group 3). The anesthetic regimen used a standardized total intravenous anesthesia consisting of propofol and remifentanil for all patients. The arterial blood gas analysis was performed to identify the difference in CO2 partial pressure between arterial blood and end-tidal gas. The PONV incidence was evaluated for the periods of 0-2, 2-6, and 6-24 h after anesthesia. The incidence and severity of PONV and the administration of rescue antiemetics were recorded. RESULTS: The three groups were comparable for the patient, anesthesia, and surgical characteristics. The average PaCO2 level during surgery was 38-39, 43-44, and 47-48 mmHg in Groups 1, 2, and 3, respectively. The incidence and severity of PONV and use of rescue antiemetics were not significantly different among the groups. The overall incidence of nausea during the first 24-h postoperative period was 54, 48, and 50% in Groups 1, 2, and 3, respectively (P = 0.593). CONCLUSION: Our data suggest that mild to moderate intraoperative hypercapnia did not decrease the incidence and severity of PONV or the requirement for rescue antiemetics after gynecologic laparoscopic surgery.
RCT Entities:
BACKGROUND: Laparoscopic surgery is associated with a high incidence of postoperative nausea and vomiting (PONV). The use of CO2 pneumoperitoneum has been proposed as a potential cause of high PONV incidence. However, intraoperative hypercarbia may be related to enhanced perfusion to the main effector sites for PONV, including the brain and gastrointestinal tract. In this study, we investigated whether an increase in intraoperative CO2 partial pressure in arterial blood (PaCO2) reduces the incidence of PONV. METHODS: This study enrolled 400 female patients aged 20-60 years who were undergoing laparoscopic gynecologic surgery. The patients were allocated randomly to one of three groups with the following intraoperative PaCO2 levels: 36-40 mmHg (Group 1), 41-45 mmHg (Group 2), or 46-50 mmHg (Group 3). The anesthetic regimen used a standardized total intravenous anesthesia consisting of propofol and remifentanil for all patients. The arterial blood gas analysis was performed to identify the difference in CO2 partial pressure between arterial blood and end-tidal gas. The PONV incidence was evaluated for the periods of 0-2, 2-6, and 6-24 h after anesthesia. The incidence and severity of PONV and the administration of rescue antiemetics were recorded. RESULTS: The three groups were comparable for the patient, anesthesia, and surgical characteristics. The average PaCO2 level during surgery was 38-39, 43-44, and 47-48 mmHg in Groups 1, 2, and 3, respectively. The incidence and severity of PONV and use of rescue antiemetics were not significantly different among the groups. The overall incidence of nausea during the first 24-h postoperative period was 54, 48, and 50% in Groups 1, 2, and 3, respectively (P = 0.593). CONCLUSION: Our data suggest that mild to moderate intraoperative hypercapnia did not decrease the incidence and severity of PONV or the requirement for rescue antiemetics after gynecologic laparoscopic surgery.
Entities:
Keywords:
CO2 pneumoperitoneum; Hypercapnia; Laparoscopy; PONV
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