Articles Vol. 67 No. 7 26/07/2026

NGHIÊN CỨU CÁC YẾU TỐ ẢNH HƯỞNG ĐẾN THỜI GIAN NGỪNG THỞ KHI SỬ DỤNG PHƯƠNG PHÁP OXY LƯU LƯỢNG CAO TRONG PHẪU THUẬT NỘI SOI DÂY THANH

Do Thanh Hoa1,2, Ngo Van Dinh1,2
1 108 Military Central Hospital
2 Bệnh viện Trung Ương Quân đội 108
DOI: 10.52163/yhc.v67i7.5898
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Keywords
endoscopic vocal cord surgery, high‐flow oxygenation, apnoeic time.
Abstract

Objective: To identify factors affecting apnoea time during high-flow nasal oxygenation (HFNC) in patients undergoing endoscopic vocal cord surgery under general anesthesia. Subject and method: A prospective study was conducted at the 108 Military Central Hospital from October 2022 to December 2025. A total of 130 patients aged 25–77 years who were scheduled for endoscopic vocal cord surgery were included. All patients received total intravenous anesthesia with complete neuromuscular blockade and were maintained under apnoeic conditions using HFNC at flow rates of 40–70 L/min without mechanical ventilation. Apnoea time and related factors, including Mallampati classification, body mass index (BMI), and oxygen flow rate, were analyzed using univariate and multivariate linear regression models. Result: The mean apnoea time was 18.6 ± 2.5 minutes. Both univariate and multivariate regression analyses demonstrated that Mallampati classification was significantly associated with apnoea time during HFNC use in endoscopic vocal cord surgery. Conclusion: Mallampati classification is an independent factor influencing apnoea time during high-flow nasal oxygenation in endoscopic vocal cord surgery under general anesthesia.

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