Does Induction of Anesthesia with Target-controlled Propofol Infusion Reduce the Risk of Post-induction Hypotension in High-risk Patients?
The purpose of this study is to compare the risk of hypotension following induction of anesthesia in high-risk patients (American Society of Anesthesiologists risk scores III and IV) using target-controlled infusion (TCI) of propofol versus standard manual induction of anesthesia. Our previously published study compared TCI and manual induction of anesthesia in a general patient population and found that hypotension developed less with TCI induction. This study is a continuation of the other study and will be conducted in high-risk patients.
• Patients with the American Society of Anesthesiology physical status 3-4
• Underwent major elective surgery
• Required intra-arterial blood pressure monitoring before induction.