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Hypoxia and hypotension during endoscopy and colonoscopy
J F Lancaster1, D Gotley, D C Bartolo
1Department of Surgery, University of Bristol, UK.
The Australian and New Zealand Journal of Surgery
|April 1, 1990
Summary
Hypotension and hypoxia are common during gastrointestinal endoscopy, affecting 13% and 17% of patients, respectively. Continuous monitoring of blood pressure and arterial oxygen saturation is recommended for patient safety during these procedures.
Area of Science:
- Gastroenterology
- Anesthesiology
- Critical Care Medicine
Background:
- Gastrointestinal endoscopy procedures like oesophagogastroduodenoscopy (OGD) and proctosigmoidocolonoscopy (PSC) carry risks.
- Monitoring patient vitals during these procedures is crucial for safety.
Purpose of the Study:
- To assess the incidence of hypotension and hypoxia during OGD and PSC.
- To identify factors influencing these adverse events.
Main Methods:
- Continuous monitoring of arterial oxygen saturation (SaO2), pulse, and mean blood pressure (BP) in 63 patients undergoing OGD or PSC.
- Recording patient distress, procedure duration, sedative dose, endoscope, and operator details.
Main Results:
- Marked hypotension (>40% fall in BP) occurred in 13% and marked hypoxia (>8% fall in SaO2) in 17% of patients.
- Sedative dose correlated with SaO2 decline, while procedure duration correlated with both BP and SaO2 decline.
- No correlation found between hypoxia/hypotension and patient age or medical history.
Conclusions:
- Hypotension and hypoxia are unpredictable and not always clinically recognizable during OGD and PSC.
- Continuous pulse oximetry and blood pressure monitoring are recommended for enhanced patient safety during gastrointestinal endoscopy.