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The Effect of Different I:E Ratio on Gas Exchange of Patients Undergoing Gynecologic Laparoscopic Surgery With Trendelenburg Position

Uterine Myoma Clinical Trial

Official title:
The Effect of Different I:E Ratio on Gas Exchange of Patients Undergoing Gynecologic Laparoscopic Surgery With Trendelenburg Position

Clinical Trial Summary

In patients undergoing gynecologic laparoscopic surgery with trendelenburg position, the disturbance of pulmonary gas exchange frequently occurs due to high intra-abdominal pressure. The investigators tried to evaluate the effect of various inspiratory to expiratory ratio on pulmonary gas exchange by randomized controlled trial.

Clinical Trial Description

In patients undergoing gynecologic laparoscopic surgery with trendelenburg position, the disturbance of pulmonary gas exchange frequently occurs due to high intra-abdominal pressure. During the laparoscopic surgery with abdominal gas insufflation, gas exchange disturbance such as CO2 retention, hypoxemia occurs in addition to high plateau airway pressure. The usual strategy against these kinds of problem is pressure-controlled ventilation. However, the gas exchange problem especially CO2 retention can not be solved in some cases. The inverse-ratio ventilation (IRV), which prolongs the inspiratory time greater than expiratory time, can be applied for adult respiratory distress syndrome. The efficacy of IRV is to improve gas-exchange status by increasing mean airway pressure and alveolar recruitment. There have been several clinical investigations which applied IRV during general anesthesia. However, there have been debates about the effect of IRV during general anesthesia. Therefore, we tried to apply the IRV for subjects undergoing laparoscopic surgery, and evaluate the effect of different I:E ratio on the pulmonary gas exchange and respiratory mechanics. ;

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Subject)

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT01379313
Study type Interventional
Source Samsung Medical Center
Contact
Status Completed
Phase N/A
Start date June 2011
Completion date March 2012
View Details
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