There is a risk of airway-related incidents during anaesthesia associated with obesity. High-flow nasal oxygen is advocated for perioperative preoxygenation in obese patients to reduce airway adverse reactions. However, there have been no reports on whether smoking behaviors have an impact on obese men's Apnoeic oxygenation with high-flow nasal.This study compared the effects of smoking on the duration of safe apnoea times in obese males.
All patients were were divided into two groups based on smoking status: smokers(S groups), and never smokers(NS groups). Those in the smoking group were current smokers, while those in the nonsmoking group had never smoked. Both groups of patients were induced with intravenous anesthesia and received 5 minutes of high flow nasal oxygen (60 L min) prior to induction.After induction of anaesthesia, the patients were apnoeic until peripheral oxygen saturation decreased to 95 %.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
QUADRUPLE
Enrollment
60
In group S, High-Flow Nasal Oxygen was performed after the patient lost spontaneous breathing until the end-expiratory oxygen concentration reached 95 %.
Wanghuabing
Zhengzhou, China
RECRUITINGthe safe apnoea times
Investigators will record the time of oxygen saturation drop to 95 % during intubation.
Time frame: 5-minute
the Pao2 levels
the Pao2 levels after 5-minute pre oxygenation with high flow nasal oxygen in two groups of patients.
Time frame: 5-minute
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