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For any examination, it is necessary to understand the state of the main organ, i.e. heart.

During ECG, a specialist monitors cardiac electric activity initiating its functioning. Electrocardiography allows the overall state of the cardiac muscle to be examined, and the impact of ongoing or previous treatment and various medicines on its state to be estimated., Heart rhythm disorders, intermission, and dyspnea are reasons for an ECG.

An ECG must be prescribed before serious therapy or surgery is performed that may affect the heart performance. After surgery, an ECG must be performed again. If the family history includes heart diseases, risks such as smoking, diabetes, obesity, the heart performance must also be controlled with an ECG.

In modern healthcare, there are two main types of ECG – standard and stress.

A standard ECG is performed when a patient is at rest. A doctor will ask you to lie down and attach electrodes to your chest, hands and legs which records the heart performance.

A stress ECG (or stress test, treadmill test) is conducted if the data of a standard ECG is insufficient for the final opinion on the heart state. For a stress ECG, a patient stays on a treadmill or veloergometer. The test starts with slight stress, then progresses to an intensive phase; while sensors take readings on the heart rate and performance, the same way as a standard examination.

If full information on the heart condition is required, Holter monitoring is conducted; an examination of heart activity over the course of 24 hours using a special small record keeper.