Enlarge Source: Learn the Heart Which of the following does the above ECG represent? The ECG shows sinus tachycardia at about 110 beats per minute with a prolonged PR of 0.22 seconds: first-degree ...

Those changes are often easy to dismiss, such as chest tightness, palpitations, or dizziness. You may also feel a heartbeat ...

This ECG demonstrates an "extensive anterior" and "tombstoning" of the ST segment seen during a large acute anterior myocardial infarction. This is usually the result of thrombosis of the left ...

ECG and EKG are different abbreviations for the same test, called an electrocardiogram. This test measures how electricity is functioning in a person’s heart. People may also refer to it as an ...