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Table 1 Warters grading scale for mask ventilation

From: A prospective randomized study of different height of operation table for tracheal intubation with videolaryngoscopy in ramped position

Description/Definition

Points

Oral or nasal airway

1

PIP 20–25 cmH2O

1

PIP 26–30 cmH2O

2

PIP > 30 cmH2O

3

Unable to generate PIP > 30 cmH2O

3

Two-person ventilation

2

Tidal volume 2-5 ml/kg

2

Unable to ventilate

4

  1. The grading system is based on the ability to achieve a target volume of 5 ml/kg (ideal body weight). PIP Peak inspiratory pressure
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BMC Anesthesiology

ISSN: 1471-2253

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