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Related Experiment Videos

Pulse oximetry during gastrointestinal endoscopic procedures.

Shahzad Sarwar1, Altaf Alam, Anwaar A Khan

  • 1Department of Gastroenterology, Adelaide and Meath Hospital Tallaght Dublin 24, Ireland. shehzad32@hotmail.com

Journal of the College of Physicians and Surgeons--Pakistan : JCPSP
|February 28, 2006
PubMed
Summary

Hypoxia is common during endoscopic procedures, but severe cases are rare and linked to risk factors like COPD. Continuous monitoring is advised for high-risk patients undergoing these procedures.

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Area of Science:

  • Gastroenterology
  • Pulmonology
  • Critical Care Medicine

Background:

  • Endoscopic procedures can lead to physiological changes.
  • Monitoring vital signs like oxygen saturation is crucial during these interventions.

Purpose of the Study:

  • To assess changes in oxygen saturation, blood pressure, and pulse rate during endoscopic procedures.
  • To identify risk factors associated with these physiological changes.

Main Methods:

  • An observational study was conducted involving patients undergoing various endoscopic procedures.
  • Oxygen saturation, blood pressure, and pulse rate were monitored using a pulse oximeter from the start to 5 minutes post-procedure.
  • Risk factors evaluated included age, smoking history, chronic obstructive airway disease (COAD), coronary artery disease (CAD), procedure type, and duration.

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Main Results:

  • Oxygen saturation decreased significantly during procedures (98.1% to 93.5%), with mild to moderate hypoxia in 20.2% and severe hypoxia in 11.5% of patients.
  • Severe hypoxia was predominantly observed in patients with a history of COAD.
  • Significant risk factors for desaturation included age over 50, smoking history, emergency procedures, therapeutic procedures, and COAD. Blood pressure and pulse changes were not significant.

Conclusions:

  • Mild to moderate hypoxia during endoscopic procedures is common and generally not serious.
  • Severe hypoxia is less frequent but associated with identifiable risk factors.
  • Continuous monitoring is recommended for patients with risk factors such as age >50, smoking history, COAD, and those undergoing emergency or therapeutic procedures.