Is sinus arrhythmia considered an abnormal ECG finding?
Sinus arrhythmia is generally considered an abnormal electrocardiogram (ECG) finding. An ECG showing sinus arrhythmia may reflect physiological conditions, or it could be associated with pathological conditions such as myocarditis, coronary heart disease, or hypertension. Treatment should be based on the underlying cause.
I. Physiological Causes
If a person has just undergone intense physical activity or experienced significant emotional fluctuations, changes in cardiac rhythm may occur, leading to ECG findings of sinus arrhythmia. This is considered a physiological phenomenon and typically resolves with rest and emotional regulation. No specific treatment is usually required.
II. Pathological Causes
1. Myocarditis
Myocarditis can impair normal myocardial function, resulting in sinus arrhythmia and T-wave abnormalities. It is recommended to increase rest and, under medical guidance, use medications that support myocardial nutrition, such as trimetazidine tablets, coenzyme Q10 tablets, and levocarnitine tablets.
2. Coronary Heart Disease
Coronary heart disease is primarily caused by atherosclerosis of the coronary arteries. Insufficient blood supply due to coronary artery disease may lead to ECG findings of sinus arrhythmia. Under a doctor's supervision, medications such as atorvastatin calcium tablets and enteric-coated aspirin tablets may be prescribed for treatment.
3. Hypertension
As a cardiovascular condition, hypertension increases the risk of arrhythmias compared to healthy individuals. Management requires treating the underlying hypertension. Under medical guidance, antihypertensive drugs such as hydrochlorothiazide tablets, furosemide tablets, and nifedipine tablets may be used.
ECG findings of sinus arrhythmia may also result from hyperthyroidism. It is recommended to cooperate with a physician for a comprehensive evaluation based on individual circumstances, identify the exact cause, and undergo standardized treatment. Self-medication should be avoided.
