Serial Peak Expiratory Flow Rates in Patients Undergoing Upper Abdominal Surgeries Under General Anaesthesia and Thoracic Epidural Analgesia

摘要

IntroductionAnaesthesia and upper abdominal surgeries alter lung compliance and functional residual capacity resulting from atelectasis. Upper abdominal surgeries also cause a decrease in peak expiratory flow rates, cough reflex due to pain limited inspiration.