Sinus tachycardia 120 beats/min serious?

Sinus tachycardia 120 beats/min is serious, depending on the specific situation.

Sinus tachycardia refers to the normal heart sinus node produced by the excitation frequency faster than the normal range. If it is caused by physical factors such as strenuous exercise, emotional excitement, smoking, alcohol abuse, etc., through rest and removal of incentives, generally can return to normal, usually not serious. However, if the patient is caused by pathological factors such as hypotension, anemia, sepsis, pulmonary embolism, acute myocardial infarction, etc., symptoms such as palpitation, palpitation, chest distress, shortness of breath, etc. may occur. If not treated in time, it may continue to worsen and be relatively serious.