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Arrhythmia |
Age | |||
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16-30 years |
31-40 years |
41-60 years |
>60 years | |
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Sinus bradycardia 40-60/min |
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Sinus bradycardia 30-40/mina |
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First-degree AV blocka |
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Second-degree AV block type Ia |
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R-R pauses <2 s |
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R-R pauses 2-3 sa |
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Occasional VPBs (<50/24 h) |
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Frequent VPBs (100-1000/24 h) |
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VPB pairs |
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Occasional SPBs (50-100/24 h) |
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Frequent SPBs (100-1000/24 h) |
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a During sleep, usually at night. Shaded areas represent the age group in which arrhythmia may be interpreted as normal. | ||||
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AV, atrioventricular; SPB, supraventricular premature beat; VPB, ventricular premature beat. | ||||