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. 2023 Feb 10;49:19. doi: 10.1186/s13052-022-01392-6

Table 5.

Scoring of the acute bronchiolitis severity scale

Score 0 1 2 3 4
Wheezing No Wheezing at end of expiration Wheezing throughout expiration Wheezing during inspiration-expiration Severe hypoventilation
Crackles No Crackles in 1 field Crackles in 2 fields Crackles in 3 fields Crackles in 4 fields
Effort No effort Subcostal or lower intercostal retractions + Suprasternal retractions or nasal flaring + Nasal flaring and suprasternal retractions (universal)
I:E ratioa Normal Symmetrical Inverted

aInspiration-to-Expiration ratio