8. Predictors of difficult face mask ventilation during general anesthesia in adult patients

Nguyen Toan Thang, Nguyen Thi Hong Anh

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Abstract

A prospective, descriptive study was carried out to determine the incidence and predictors of difficult mask ventilation (DMV) during induction of general anaesthesia. Richard Han's scale was used to grade difficulty of mask ventilation. The incidence and prognostic factors of DMV were assessed and recorded. There were 550 adult patients undergoing general anaesthesia for elective surgery at Bachmai hospital within 6 months in 2021. DMV was confirmed in 15 patients (2.7%). The independent predictors of DMV were toothless; Mallampati degree ≥ 3; body mass index (BMI) > 26 kg/m2 and snoring history (with the corrected odds ratio was 5.98; 4.67; 4.01 and 3.59, respectively, p < 0.05). These predictors had the prediction accuracy of more than 85 %. Conclusions: Incidence of DMV was 2.7%. The independent predictors for DMV were toothless; Mallampati degree ≥ 3; body mass index BMI > 26 kg/m2 and snoring.

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References

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