Application of Propofol Mixed With Remifentanil in Fiber Colonoscopyand Analgesia in Fiber Colonoscopy

Fiber colonoscopy, as a terminal examination method for lower gastrointestinal diseases, often brings varying degrees of pain, discomfort, tension, and anxiety to patients. Therefore, currently in clinical practice, intravenous anesthesia is often chosen to reduce discomfort. At present, intravenous propofol and fentanyl are most widely used in clinical practice, but intravenous general anesthesia can lead to hemodynamic fluctuations and an increase in anesthesia related complications such as prolonged hospital stay after surgery. Propofol and remifentanil have the characteristics of fast onset, short duration of action, and rapid awakening. The purpose of this study is to observe the efficacy and adverse reactions of remifentanil combined with low-dose propofol in patient-controlled analgesia and sedation during colonoscopy, in order to explore the safety and effectiveness of this method.