An electrocardiogram (ECG) is a tracing, or drawing. produced by an electrocardiograph - a device which records electrical activity in the heart. An ECG can be used for: 

* deciding if the heart is performing normally or suffering from abnormalities, for example cardiac arrhythmia-extra or skipped heartbeats 

* indicating damage to heart muscle, such as heart attacks, or ischaemia of heart muscle (angina)

* detecting conduction abnormalities: heart blocks and bundle branch blocks (BBB)

* screening for ischaemic heart disease during an exercise tolerance test, often carried out on an exercise bike or treadmill

* providing information on the physical condition of the heart, for example in patients with left ventricular hypertrophy (LVH)

* detecting electrolyte disturbances, for example low plasma potassium levels.

责任编辑：admin