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The Effect of Different I:E Ratio on Gas Exchange of Patients Undergoing One-lung Ventilation for Lung Surgery

Lung Cancer Clinical Trial

Official title:
The Effect of Different I:E Ratio on Gas Exchange of Patients Undergoing One-lung Ventilation for Lung Surgery

Clinical Trial Summary

Pulmonary gas exchange disturbance is a common anesthetic problem during one-lung ventilation (OLV) for thoracic surgery. The inverse-ratio ventilation (IRV), which prolongs the inspiratory time greater than expiratory time, can be applied for adult respiratory distress syndrome. The effect of IRV is to improve gas-exchange status by increasing mean airway pressure and alveolar recruitment. We tried to evaluate the effect of IRV during OLV with lung protective strategy.

Clinical Trial Description

Pulmonary gas exchange disturbance is a common anesthetic problem during one-lung ventilation (OLV) for thoracic surgery. Continuous positive airway pressure or positive end-expiratory pressure are usually applied to improve this disorder including hypoxia, but these methods are not enough. The inverse-ratio ventilation (IRV), which prolongs the inspiratory time greater than expiratory time, can be applied for adult respiratory distress syndrome. The effect of IRV is to improve gas-exchange status by increasing mean airway pressure and alveolar recruitment. The application of IRV during OLV has not been performed to our knowledge, and there is a possibility of IRV to improve oxygenation during OLV. There is a possibility of increase of auto-PEEP, or air trapping in subjects with chronic obstructive pulmonary disease, but this kind of auto-PEEP can be overcome by external PEEP. Therefore, we tried to evaluate the effect of IRV during OLV with lung protective strategy. ;

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Outcomes Assessor)

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT01540201
Study type Interventional
Source Samsung Medical Center
Contact
Status Completed
Phase N/A
Start date February 2012
Completion date October 2012
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