The ECG shows 44 beats per minute, which is considered to be bradycardia. Bradycardia can be physiologic or secondary to cardiac diseases such as myocardial infarction and hypothyroidism, or it can be caused by the use of drugs such as amiodarone and diltiazem. It is recommended that patients identify the causes in a timely manner.
1. Physiological factors: bradycardia can be seen in healthy young people, athletes and other people, such people’s bradycardia is not caused by organic diseases, usually no symptoms, do not need treatment.
2. Pathological factors: cardiac diseases such as sinus node lesions, acute lower wall myocardial infarction, etc., can cause bradycardia due to the involvement of the cardiac pacing point or conduction pathway leading to cardiac beat abnormalities; hypothyroidism can lead to bradycardia due to the reduction of thyroxine; obstructive jaundice can be due to the vagal reflexes caused by the patient with bradycardia.
3. Drugs: antiarrhythmic drugs such as amiodarone, diltiazem, propranolol and so on can act on different ion channels, affecting various currents in the course of action potential, slowing down the heart rate, and playing an antiarrhythmic role. However, such drugs can also cause side effects such as bradycardia.
Patients are advised to find out the cause of bradycardia in a timely manner, and if there is a primary disease, or symptoms such as dizziness, they should be treated for the primary disease under the guidance of a doctor in order to avoid delays in the condition.