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Difficult ventilation and intubation have been recognized as the forerunners of hypoxic brain damage during anesthesia. To overcome catastrophic events during anesthesia, an assessment of the airway before induction is of paramount importance. We designed this study to compare the effect of phonation on the Mallampati test in supine and upright positions as against the traditionally employed test without phonation in serving to predict difficult laryngoscopy and intubation.

journal of anaesthesiology clinical pharmacology

A comparison of the Mallampati test in supine and upright positions with and without phonation in predicting difficult laryngoscopy and intubation: A prospective study