心跳过缓
 | 此條目目前正依照其他维基百科上的内容进行翻译。 (2017年8月8日) |
| 心跳过慢 | |
|---|---|
 | |
| 低于每分钟60次的窦性心跳过慢 | |
| 醫學專科 | 心臟內科 |
| Bradycardia | |
|---|---|
| 同义词 | bradyarrhythmia, brachycardia |
| 读音 | |
| 醫學專科 | Cardiology |
Bradycardia is a condition wherein an individual has a slow heart rate, typically defined as a heart rate of under 60 beats per minute (BPM) in adults.[1] Bradycardia typically does not cause symptoms until the rate drops below 50 BPM. When symptomatic, it may cause fatigue, weakness, dizziness, sweating, and at very low rates, fainting.[2]
During sleep, a slow heartbeat with rates around 40–50 BPM is common, and is considered normal. Highly trained athletes may also have athletic heart syndrome, a very slow resting heart rate that occurs as a sport adaptation and helps prevent tachycardia during training.
The term relative bradycardia is used in explaining a heart rate that, although not actually below 60 BPM, is still considered too slow for the individual's current medical condition.
心跳过慢（Bradycardia）也称心动过缓、心跳过缓、心动徐缓、徐脉。是指心脏跳动速度低于正常水平，达到每分钟60次以下的现象。心跳过慢可能是由迷走神经亢奋、窦房结病变、窦房结的冲动波遭到阻挡等原因引起，常见于老年人、心脏病患者[3]
