What does to EKG look like with aortic stenosis?

Electrocardiogram (ECG) findings in aortic stenosis

* Increased left ventricular hypertrophy (LVH), which can be concentric or asymmetric

* ST-segment depression in the left precordial leads (V1-V6)

* QRS prolongation

* Left bundle branch block (LBBB)

* Atrial fibrillation

LVH is the most common ECG finding in aortic stenosis. It occurs as a result of the increased workload that the left ventricle has to perform in order to pump blood through the stenotic aortic valve. LVH can be concentric, in which the thickness of the left ventricular wall is increased uniformly, or asymmetric, in which the septum is disproportionately thickened.

ST-segment depression in the left precordial leads (V1-V6) is another common ECG finding in aortic stenosis. It is caused by ischemia of the left ventricle, which occurs as a result of the reduced blood flow that is able to pass through the stenotic aortic valve.

QRS prolongation is a widening of the QRS complex on the ECG. It is caused by delayed conduction of the electrical impulse through the left ventricle, which is a result of the LVH.

LBBB is a conduction disorder that occurs when the electrical impulse is blocked in the left bundle branch, which is one of the three main branches of the electrical conduction system in the heart. LBBB can cause a wide QRS complex and ST-segment depression in the left precordial leads.

Atrial fibrillation is a type of irregular heart rhythm that is common in patients with aortic stenosis. It occurs as a result of the left atrial enlargement that is often associated with aortic stenosis.

Other ECG findings that may be seen in aortic stenosis include:

* Increased P-wave amplitude, which is caused by enlargement of the left atrium

* Shortened PR interval, which is caused by accelerated conduction of the electrical impulse through the atrioventricular node

* Bundle branch block, which is a conduction disorder that occurs when the electrical impulse is blocked in one of the three main branches of the electrical conduction system in the heart