Korean J Anesthesiol.  2010 Nov;59(5):329-334. 10.4097/kjae.2010.59.5.329.

The effect of pneumoperitoneum and Trendelenburg position on respiratory mechanics during pelviscopic surgery

Affiliations
  • 1Department of Anesthesiology and Pain Medicine, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea. sskim@gnah.co.kr

Abstract

BACKGROUND
Conventional pelviscopic surgery requires pneumoperitoneum with CO2 gas insufflation and lithotomy-Trendelenburg position. Pneumoperitoneum and Trendelenburg position may influence intraoperative respiratory mechanics in anesthetic management. This study was conducted to investigate the influence of pneumoperitoneum and Trendelenburg position on respiratory compliance and ventilation pressure.
METHODS
Twenty-five patients scheduled for elective gynecologic laparoscopy were evaluated. The patients had no preexisting lung or heart disease or pathologic lung function. Conventional general anesthesia with thiopental sodium, lidocaine, rocuronium, and sevoflurane was administered. The peak inspiratory pressure, plateau pressure, and end-tidal CO2 were measured before and after creation of pneumoperitoneum with an intraabdominal pressure of 12 mmHg, then after 10 minutes and 30 minutes in the 20degrees Trendelenburg position, and after deflation of pneumoperitoneum. The dynamic lung compliance was then calculated.
RESULTS
Following creation of pneumoperitoneum, there was a significant increase in peak inspiratory pressure (6 cmH2O), plateau pressure (7 cmH2O), and end-tidal CO2 (5 mmHg), while dynamic lung compliance decreased by 12 ml/cmH2O. Overall, the Trendelenburg position induced no significant hemodynamic or pulmonary changes.
CONCLUSIONS
The effects of pneumoperitoneum significantly reduced dynamic lung compliance and increased peak inspiratory and plateau pressures. The Tredelenburg position did not change these parameters.

Keyword

Airway pressure; Head-down tilt; Lung compliance; Pelviscopy; Pneumoperitoneum

MeSH Terms

Androstanols
Anesthesia, General
Compliance
Head-Down Tilt
Heart Diseases
Hemodynamics
Humans
Insufflation
Laparoscopy
Lidocaine
Lung
Lung Compliance
Methyl Ethers
Pneumoperitoneum
Respiratory Mechanics
Thiopental
Ventilation
Androstanols
Lidocaine
Methyl Ethers
Thiopental

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