The Effect of Combined General/Epidural Anesthesia Versus General Anesthesia on Diaphragmatic Function
Conditions
Interventions
- DRUG: epidural 250mL of 0.2% ropivacaine and 2 μg/mL of fentanyl, 5 mL/hr continuous infusion and 0.5 mL bolus dose
- DRUG: no epidural drug administered
Sponsor
Yonsei University