TABLE 1.

Depicts normal, awake heart rate medians for age. Bradycardic heart rates are those below the 10th percentile in the aggregate population. Adapted from Fleming and colleagues³

Age	Median heart rate (beats/min)	Bradycardia (beats/min)
0–3 months	143	<123
3–6 months	140	<120
6–9 months	134	<114
9–12 months	128	<109
12–18 months	123	<103
18 months to 2 years	116	<98
2–3 years	110	<92
3–4 years	104	<86
4–6 years	98	<81
6–8 years	91	<74