Table 1 Laryngoscopic Handling Score (LHS).

From: Improvement of laryngoscopic view by hand-assisted elevation and caudad traction of the shoulder during tracheal intubation in pediatric patients

 

0

1

2

Mouth opening

No additional mouth opening is required.

Additional mouth opening is required. (with one hand)

Additional mouth opening is required. (with two hand or using tongue depressor)

Teeth contact

The blade does not touch the tooth (or gingiva).

The blade touches the upper or lower teeth (or gingiva).

The blade touches the upper and lower teeth (gingiva).

Sternum contact

The laryngoscope handle can enter without touching the sternum.

The laryngoscope handle can be inserted in a diagonal line.

The laryngoscope handle touches the sternum, preventing entry.

Advancement of laryngoscope

No resistance

There is slight resistance

There is resistance preventing entry.

  1. The ease of laryngoscopic handling was divided into easy (LHS < 2), moderate (2 ≤ LHS < 4), and difficult (LHS ≥ 4 or if there are two points in one item).
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