There is an abnormal heart rate of 48 beats per minute in the morning, and the heart rate is too slow for a possible arrhythmia. Possible causes are pharmacologic factors, degeneration of sinus node function, and myocardial ischemia.
If the patient is taking too high a dose of oral medications such as metoprolol and bisoprolol, which have the effect of slowing down the heart rate, it is possible that the heart rate slows down to 48 beats per minute in the morning.
If the patient’s own sinus node function degradation, or viral myocarditis damage to the heart conduction system, the patient may have sinus bradycardia, heart rate slowed to 48 beats / min, or the occurrence of atrioventricular block, sick sinus node syndrome, it will be in the morning heart rate of 48 beats / min.
Some patients with myocardial ischemia, especially patients with right coronary artery stenosis, are prone to myocardial ischemic episodes in the morning, which tends to affect the sinus node blood supply, resulting in a heart rate slowed to 48 beats per minute.
Heart rate 48 in the morning, this situation needs to go to the cardiology department in time for further examination to clarify the condition and timely diagnosis and treatment.