The heart is regulated by the sympathetic and vagus nerves, the heartbeat, and vice versa. When the sympathetic nerves are impulsed, excited, or active, the vagus nerve dominates and the heart rate slows. Therefore, the heart rate will be different under different environmental influences.

Take arrhythmia as an example. If you drink a few cups of strong tea or coffee the day before the test, you may have arrhythmia during the test. In addition, emotional agitation, shock, and mental stress can also cause symptoms such as increased heart rate and arrhythmia.

The words "sinus rhythm", "premature beats", and "sinus bradycardia" indicated by the examination should not be too heart ekg. For example, there is also a considerable proportion of premature beats in healthy people, and the proportion gradually increases with age. About 90% of the elderly can present atrial premature beats and ventricular premature beats. Before the examination, if you drink alcohol, drink coffee and tea, exercise, get emotional, or even constipation, you may experience premature beats.

Of course, coronary heart disease, rheumatic heart disease, pulmonary heart disease, hypertensive heart disease, cardiomyopathy, hyperthyroid heart disease and other diseases may also cause arrhythmia. Reminder: ECG examination results reflect only the tip of the iceberg of cardiac electrical activity. Although the possibility of related diseases cannot be ruled out, it may not necessarily reflect organic heart disease. Therefore, after most ECG problems, the doctor will refer the patient to a cardiovascular specialist for further examination and diagnosis.

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