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Table 2 Modified NACA scale dichotomized in 2 groups, as used in Geneva’s SBD system

From: Emergency physician’s dispatch by a paramedic-staffed emergency medical communication centre: sensitivity, specificity and search for a reference standard

 

National Advisory Committee for Aeronautics (NACA) levels

Symptoms usually not requiring an emergency physician on site

NACA 0

No injury or disease

NACA 1

Injury/disease without any need for acute physician care

NACA 2

Injury/disease requiring examination and therapy by a physician, but hospital admission is not indicated

NACA 3

Injury/disease without threat of life but requiring hospital admission

NACA 7 no res

Lethal injury or disease without resuscitation attempted

+/−

NACA 4

Injury/disease which can possibly lead to deterioration of vital signs

Symptoms usually requiring an emergency physician on site

NACA 5

Injury/disease with acute threat of life

NACA 6

Injury/disease transported after an out-of-hospital cardiac arrest

NACA 7 res

Lethal injuries or disease with resuscitation attempted (without transportation)