Comparison of propofol fentanyl versus propofol ketamine for painless gastrointestinal endoscopy: a systematic review
Background Propofol-based sedation is widely used for gastrointestinal endoscopic procedures because of its rapid onset and recovery profile. However, adjunct agents are required to improve procedural tolerance and reduce propofol-related cardiorespiratory adverse effects. Ketamine and fentanyl are among the most commo...