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Table 2 Grading for difficulty of tube insertion (DTI) and the result

From: Comparison of vocal cord view between neutral and sniffing position during orotracheal intubation using fiberoptic bronchoscope: a prospective, randomized cross over study

Grade

Difficulty

0

No hold-up encountered

1

Hold-up on initial attempt, relieved by withdrawal and rotation of tube 90Ā° anticlockwise.

2

Hold-up on initial attempt requiring more than one manipulation of the tube, alteration in head or neck position or external manipulation

Position

DTI Grading

Number of patients

Sniffing

0

22

Ā 

1

3

Ā 

2

1

Neutral

0

25

Ā 

1

1

Ā 

2

1