What can cause an abnormal EKG?

As a medical professional with expertise in cardiology, I can provide you with an overview of the various factors that can lead to an abnormal EKG. An electrocardiogram (EKG) is a crucial diagnostic tool that records the electrical activity of the heart. While an EKG abnormality can sometimes be a benign variation, other times it can indicate a serious medical condition. Here are some potential causes for an abnormal EKG: 1. Heart Attack (Myocardial Infarction): Damage to the heart muscle can cause changes in the EKG readings. 2. Heart Disease (Coronary Artery Disease): Narrowing of the arteries can lead to abnormal EKG patterns. 3. Cardiomyopathy: A disease of the heart muscle that affects its size, shape, or function, which can be reflected in the EKG. 4. Arrhythmias: Irregular heartbeats, such as atrial fibrillation or ventricular tachycardia, can cause EKG abnormalities. 5. Valvular Heart Disease: Problems with the heart's valves can alter the EKG. 6. Electrolyte Imbalances: Abnormal levels of sodium, potassium, or calcium can affect the heart's electrical activity. 7. Hyperthyroidism: An overactive thyroid can increase the heart rate and cause an abnormal EKG. 8. Certain Medications: Some drugs can affect the electrical conduction in the heart and lead to an abnormal EKG. 9. Physical Stress or Anxiety: Intense stress or anxiety can temporarily alter the EKG. 10. Inflammation or Infection: Conditions like myocarditis can cause EKG changes. 11. Pulmonary Embolism: A blockage in the lungs can affect the heart's electrical activity. 12. Congenital Heart Defects: Some people are born with heart defects that can show up on an EKG. It's important to note that not all EKG abnormalities are clinically significant. A thorough medical evaluation, including a review of the patient's medical history and symptoms, is necessary to determine the cause and appropriate treatment.

An electrocardiogram (EKG) measures your heart's electrical activity. ... Sometimes an EKG abnormality is a normal variation of a heart's rhythm, which does not affect your health. Other times, an abnormal EKG can signal a medical emergency, such as a myocardial infarction (heart attack) or a dangerous arrhythmia.