Table 4.

Respiratory Rate Cutoffs to Define Age-Specific Tachypnea

Source	Respiratory Rate Thresholds Defining Tachypnea-for-Age
WHO [1]	0–2 months: >60
	2–12 months: >50
	1–5 years: >40
	Older than 5 years: >20
PALS [31]	Infant: >53
	Toddler: >37
	Preschooler: >28
	School-aged child: >25
	Adolescent: >20
APLS [32]	0–3 months: >50
	3–6 months: >45
	6–18 months: >40
	18–24 months: >35
	2–8 years: >30
	8–12 years: >25 Older than 12 years: >24
Bonafide et al [33]a	0–3 months: >62
	3–6 months: >58
	6–9 months: >54
	9–12 months: >51
	12–18 months: >48
	18–24 months: >45
	2–3 years: >42
	3–4 years: >40
	4–6 years: >37
	6–8 years: >35
	8–12 years: >31
	12–15 years: >28
	15–18 years: >26

Abbreviations: APLS, Advanced Pediatric Life Support; PALS, Pediatric Advanced Life Support; WHO, World Health Organization.

^a95th percentile-for-age cutoffs used for study by Bonafide et al [38].