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.
Participants ranged in age from 18 to 80 with BMI≥30 kg/m2.
Participants are male obese patients undergoing elective non-thoracic surgery
patients were kept awake during the intubation due to cervical spine pathology.
Patients with unstable hemodynamics.
Patients with airway inflammatory diseases, including asthma, chronic obstructive pulmonary disease (COPD), lung cancer, pulmonary fibrosis and cystic fibrosis.
Patients with upper respiratory infection and nasal blockage.
Parallel
apnoeic
DeviceIn group S, High-Flow Nasal Oxygen was performed after the patient lost spontaneous breathing until the end-expiratory oxygen concentration reached 95 %.
the safe apnoea times
Investigators will record the time of oxygen saturation drop to 95 % during intubation.
the Pao2 levels
the Pao2 levels after 5-minute pre oxygenation with high flow nasal oxygen in two groups of patients.
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