Continuous negative external pressure (cNEP) reduces respiratory impairment during screening colonoscopy: a pilot...

Area of Science:

• Gastroenterology
• Pulmonology
• Medical Devices

Background:

• Sedation during gastrointestinal procedures can cause upper airway collapsibility and respiratory impairment.
• Screening colonoscopy commonly involves sedation, posing risks of respiratory compromise.

Purpose of the Study:

• To evaluate the efficacy of continuous negative external pressure (cNEP) in mitigating respiratory impairment during screening colonoscopy.
• To assess the impact of cNEP on oxygen saturation and apnea frequency.

Main Methods:

• A prospective study comparing patients undergoing screening colonoscopy.
• The control group (n=24) received standard care, while the intervention group (n=30) received cNEP via a neck collar.
• Respiratory impairment was defined as a >4% drop in oxygen saturation or apnea ≥20 seconds.

Main Results:

• cNEP reduced mean respiratory impairment episodes by 45% (1.92 vs. 3.50, P=0.022).
• Apneas ≥20 seconds decreased significantly in the cNEP group (28% vs. 74%, P=0.002).
• Supplemental oxygen needs were lower with cNEP (10% vs. 42%, P=0.01), with minimal adverse events.

Conclusions:

• Continuous negative external pressure (cNEP) is an effective method for reducing sedation-related respiratory impairment during screening colonoscopy.
• cNEP offers a safe and beneficial adjunct for improving airway stability and respiratory outcomes in patients undergoing endoscopic procedures.