Bradycardia | 合法醫療器材資訊網

Bradycardiaisaconditiontypicallydefinedwhereinanindividualhasaresting·Duringsleep,aslowheartbeatwithratesaround40–50BPMiscommon,andis ...

Heart rate below the normal range

Medical condition

Bradycardia (also sinus bradycardia) is a slow resting heart rate, commonly under 60 beats per minute (BPM) as determined by an electrocardiogram.[1] It is considered to be a normal heart rate during sleep, in young and healthy or elderly adults, and in athletes.[1]

In some people, bradycardia below 60 BPM may be associated with fatigue, weakness, dizziness, sweating, and fainting.[1] The term "relative bradycardia" is used to refer to a heart rate slower than an individuals typical resting heart rate. Athletes may have athletic heart syndrome, which includes bradycardia as part of the cardiovascular adaptations to training and participation.[2]

The word "bradycardia" is from the Greek βραδύς bradys "slow", and καρδία kardia "heart".[3]