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Anesth Pain Med > Volume 10(4); 2015 > Article
Obstetric Anesthesia
Anesthesia and Pain Medicine 2015;10(4):278-283.
DOI: https://doi.org/10.17085/apm.2015.10.4.278    Published online October 31, 2015.
Comparison of volume-controlled and pressure-controlled ventilation in the Trendelenburg position for gynecological laparoscopic surgery
Kyung Mi Kim, Hyun Soo Moon, Soo Kyung Lee, Eun Young Kim, Sangjun Lee, Woon Suk Hwang, Sung Wook Jang, Seung Ju Kim
1Department of Anesthesiology and Pain Medicine, Hallym University Sacred Hospital, Hallym University College of Medicine, Anyang, Korea. hysomoon@yahoo.co.kr
2Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam, Korea.
Received: 26 May 2015   • Revised: 17 August 2015   • Accepted: 17 August 2015
Abstract
BACKGROUND
Minimal invasive gynecologic surgery usually requires pneumoperitoneum and Trendelenburg positioning, which results in adverse effects on respiratory and hemodynamic parameters. The aim of this study was to investigate the effects of volume-controlled ventilation (VCV) and pressure-controlled ventilation (PCV) introduced sequentially in patients who underwent gynecological laparoscopy on respiratory mechanics, cardiovascular responses, and gas exchange.
METHODS
Forty patients who were scheduled for gynecologic laparoscopic surgery were enrolled. Baseline ventilation of their lungs was performed with VCV with a tidal volume (TV) of 8 ml/kg ideal body weight (IBW). Forty minutes after pneumoperitoneum and Trendelenburg positioning, the ventilation mode was changed to PCV, and airway pressure was set to provide a TV of 8 ml/kg IBW without exceeding 35 cmH2O. Respiratory mechanics and hemodynamic and gas exchange parameters were recorded at 10 minutes after induction, 30 minutes after CO2 pneumoperitoneum and Trendelenburg positioning, 30 minutes after PCV, and 30 minutes after desufflation and supine position.
RESULTS
After pneumoperitoneum and Trendelenburg positioning, there were significant increases in systolic blood pressure, diastolic blood pressure, central venous pressure, peak airway pressure (PAP), mean airway pressure (Pmean), whereas lung compliance and PaO2 significantly decreased. The decrease in PAP and increases of Pmean, lung compliance and PaO2 were observed during PCV compared with VCV (P < 0.05). There were no differences in hemodynamic parameters between VCV and PCV.
CONCLUSIONS
Our results demonstrated that PCV may be an effective method of ventilation during gynecologic laparoscopy in terms of improved oxygenation and minimizing adverse respiratory mechanics.
Key Words: Laparoscopic surgery, Pneumoperitoneum, Pressure-controlled ventilation, Trendelenburg position, Volume-controlled ventiation


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