ECG shows sinus tachycardia. What does that mean?

Sinus tachycardia on an ECG usually indicates that the patient's sinus rhythm exceeds the normal level, reaching a level greater than 100 beats per minute.

Both physiological and pathological factors can cause sinus tachycardia to occur on an ECG examination. If the patient is nervous before the examination, or if he has performed strenuous exercise before the examination, it will affect the results of the ECG examination. Sinus tachycardia usually returns to normal after rest. If the patient suffers from anemia, pulmonary embolism, myocarditis and other diseases, it will also affect the beating of the heart, and sinus tachycardia occurs. The patient should actively treat the primary disease to promote sinus tachycardia to return to normal.