Sinus tachycardia is just a common arrhythmia. It is recommended to do blood tests such as electrocardiogram, color Doppler ultrasound and myocardial enzymes to rule out organic heart disease, and the civil service physical examination can pass.
Sinus tachycardia means that the rate of impulse formation in adult sinus node exceeds 100 times per minute, and the rate is often between 10 1- 160 times per minute. At the beginning and end of sinus tachycardia, its heart rate gradually increases and decreases. Sinus tachycardia is a common arrhythmia.
Sinus tachycardia has no special symptoms and is often caused by other diseases. Its clinical symptoms are related to the degree of hemodynamic disorder caused by the increase of heart rate, and also to the basic heart state. When the heart rate increases slightly, the cardiac output increases and the efficiency of cardiac work increases, and the patient may be asymptomatic. When the heart rate is too high, patients may have symptoms such as palpitation, shortness of breath, chest tightness, irritability, and even chest pain.
The symptoms of sinus tachycardia vary from person to person. Usually, the heart rate increases from about 70 beats/min at rest to about 2.5 beats/min (180 beats/min), and the heart has the highest working efficiency. When it exceeds 180 beats/min, the working efficiency of the heart is obviously reduced, which can not meet the needs of the body. This is because when the heart rate is >: 180 beats/min, the myocardial oxygen consumption increases obviously, the coronary blood flow decreases, the end-diastolic period shortens, the ventricular filling decreases and the cardiac output decreases.
Generally speaking, sinus tachycardia may be caused by excessive tension and excitement. Sinus tachycardia can occur in normal people, such as strenuous exercise or emotional excitement, excessive smoking, drinking, strong tea and coffee. If there are no abnormalities in other heart tests, it will not affect employment.