What happens when you run and your heart suddenly races?

The causes of sudden heart rate acceleration can be divided into physiological and pathological, and common diseases include paroxysmal supraventricular tachycardia and other tachyarrhythmias, heart failure, hypoglycemia, anemia and so on.
1. Physiological: when running, the sympathetic nervous system is activated, adrenaline, catecholamines and other levels rise and cause the heart rate to accelerate, which is a normal physiological response, and the heart rate can be returned to normal after rest.
2. Pathologic:
1. Cardiovascular disease: such as paroxysmal supraventricular tachycardia, preexcitation syndrome and other tachyarrhythmias, the heart rate is accelerated, >100 beats/min, patients may have panic, shortness of breath, sweating, etc., through the electrocardiogram can be a clear diagnosis; heart failure patients with weakened cardiac function, the heart is overburdened during the run resulting in compensatory acceleration of the heart rate, the patient may have panic, shortness of breath and other manifestations.
2. Other: such as hypoglycemia, running will consume glucose and other energy, resulting in hypoglycemia, sympathetic excitation of the heart rate; anemia patients are prone to hypoxia, the body’s oxygen demand increases when running, cardiopulmonary compensatory work caused by the acceleration of the heart rate, panic, fatigue.
If the patient running suddenly rapid heart rate, after resting continuously can not be relieved, it is recommended to go to the hospital in a timely manner to consult a doctor to clarify the cause of the disease and then actively treat.