Description

Adnet et al developed the Intubation Difficulty Scale (IDS) to describe the difficulty involved in intubating a patient. The authors are from the University of Paris VII and XIII.


 

Parameters:

(1) number of attempts

(2) number of operators

(3) number of alternative techniques

(4) Cormack grade (see 31.05.02, above)

(5) lifting force required

(6) laryngeal pressure

(7) vocal cord mobility

Parameter

Finding

Points

number of attempts

 

(attempts) - 1

number of operators

 

(operators) - 1

number of alternative techniques

 

(number)

Cormack grade for first oral attempt

success blind oral

0

 

Grade I

0

 

Grade II

1

 

Grade III

2

 

Grade IV

3

lifting force required

normal

0

 

increased

1

laryngeal pressure

none applied

0

 

Sellick maneuver

0

 

applied

1

vocal cord mobility

abduction

0

 

adduction

1

 

total score =

= SUM(points for all 7 parameters)

 

Interpretation:

• minimum score: 0

• maximum score: > 20 (an impossible intubation is graded as infinite).

 

Total Score

Degree of Difficulty

0

easy

1 - 5

slight

>= 6

moderate to major

 


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