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Table 1 Criteria used to assess intubating conditions. Overall intubating conditions were rated as excellent if all variables were excellent, they were good if all variables were good or excellent, and they were poor if any variable was poor [8]

From: Comparison of the trapezius and the adductor pollicis muscle as predictor of good intubating conditions: a randomized controlled trial

Variable assessed

Clinically acceptable

Clinically not acceptable

 

Excellent

Good

Poor

Laryngoscopy

Easy

Fair

Difficult

vocal cords position

Abducted

Intermediate/moving

Closed

Reaction to insertion of the tracheal tube and cuff inflation (diaphragmatic movements/coughing)

none

slight

Vigorous/sustained

  1. Laryngoscopy: easy: jaw relaxed, no resistance to blade insertion. Fair: jaw not fully relaxed, slight resistance to blade insertion. Difficult: poor jaw relaxation, active resistance of the patient to laryngoscopy. Reaction to insertion of the tube: slight: one or two movements for less than 5 s. Vigorous/sustained: more than 2 contractions/movements for longer than 5 s