What causes left axis deviation and bradycardia, and what should be done about it?

Left axis deviation with bradycardia may be related to factors such as aging, viral myocarditis, and coronary atherosclerotic heart disease, and can be managed through daily care, oral medications, or other treatments. Specific analyses are as follows:

1. Age-related factors

With increasing age, the heart and blood vessels gradually undergo aging, leading to a progressive decline in cardiac and vascular function. This may increase the likelihood of left axis deviation and reduce the heart rate. This is a normal physiological phenomenon and typically does not require treatment if no symptoms are present.

2. Viral Myocarditis

Viral myocarditis is an inflammation of the myocardium caused by viral infection. The infection can lead to damage and necrosis of myocardial cells, weakening myocardial function and disrupting electrical conduction, resulting in leftward deviation of the cardiac axis.

3. Coronary Atherosclerotic Heart Disease

Coronary atherosclerotic heart disease refers to the buildup of lipid deposits and calcification on the inner walls of the coronary arteries, forming plaques that cause myocardial ischemia and hypoxia. Myocardial ischemia and hypoxia affect the metabolism and electrical conduction of myocardial cells, causing the electrical axis to shift to the left and affecting heart rate.

In addition to the above common causes, left axis deviation with bradycardia may also be associated with mitral stenosis, aortic stenosis, mitral valve prolapse, and other conditions. Patients should seek medical evaluation at a hospital to determine the underlying cause and receive standardized treatment accordingly.