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Updated: Nov 8, 2025
An Experimental Paradigm for the Prediction of Post-Operative Pain PPOP
Published on: January 27, 2010
Modified STOP-Bang for predicting perioperative adverse events in the Thai population
Lisa Sangkum1, Chama Wathanavaha2, Visasiri Tantrakul3
1270 Department of Anesthesiology, Faculty of Medicine, Ramathibodi hospital, Mahidol University, Rama VI road, Phayathai, Ratchatewi, Bangkok, 10400, Thailand. lisa.sangkum@gmail.com.
Background:
Undiagnosed obstructive sleep apnea (OSA) is associated with adverse perioperative outcomes. The STOP-Bang questionnaire is a validated screening tool for OSA. However, its precision may vary among different populations. This study determined the association between high-risk OSA based on the modified STOP-Bang questionnaire and perioperative adverse events.
Methods:
This cross-sectional study included patients undergoing elective surgery from December 2018 to February 2019. The modified STOP-Bang questionnaire includes a history of Snoring, daytime Tiredness, Observed apnea, high blood Pressure, Body mass index > 30 kg/m2, Age > 50, Neck circumference > 40 cm, and male Gender. High risk for OSA was considered as a score ≥ 3.
Results:
Overall, 400 patients were included, and 18.3% of patients experienced perioperative adverse events. On the basis of modified STOP-Bang, the incidence of perioperative adverse events was 23.2 and 13.8% in patients with high risk and low risk (P-value 0.016) (Original STOP-Bang: high risk 22.5% vs. low risk 14.7%, P-value 0.043). Neither modified nor original STOP-Bang was associated with perioperative adverse events (adjusted OR 1.91 (95% CI 0.99-3.66), P-value 0.055) vs. 1.69 (95%CI, 0.89-3.21), P-value 0.106). Modified STOP-Bang ≥3 could predict the incidence of difficult ventilation, laryngoscopic view ≥3, need for oxygen therapy during discharge from postanesthetic care unit and ICU admission.
Conclusions:
Neither modified nor original STOP-Bang was significantly associated with perioperative adverse events. However, a modified STOP-Bang ≥3 can help identify patients at risk of difficult airway, need for oxygen therapy, and ICU admission.
Trial Registrations:
This study was registered on Thai Clinical Trials Registry, identifier TCTR20181129001 , registered 23 November 2018 (Prospectively registered).
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