A good ECG reading typically shows a heart beating at a regular rate of 60 to 100 beats per minute.
An electrocardiogram (ECG) measures the electrical activity of the heart. A "good" or normal ECG reading indicates that the heart is functioning properly. Here's what constitutes a good ECG reading and what variations can indicate a problem:
Key Indicators of a Good ECG Reading:
- Heart Rate: The heart rate should fall within the normal range of 60 to 100 beats per minute.
- Regular Rhythm: The heart should beat in a consistent and predictable pattern. This means the intervals between heartbeats should be relatively uniform.
- Normal Waveforms: The ECG tracing consists of several characteristic waves (P wave, QRS complex, T wave) that represent different phases of the heart's electrical activity. These waves should have a normal shape, size, and duration.
- Normal Intervals: The intervals between the different waves (e.g., PR interval, QT interval) should fall within the normal range. These intervals reflect the time it takes for electrical impulses to travel through different parts of the heart.
What Variations May Indicate a Problem?
An abnormal ECG reading can indicate a variety of heart conditions, including:
- Arrhythmias: Irregular heart rhythms (too fast, too slow, or erratic).
- Heart Defects: Congenital heart defects or structural abnormalities.
- Coronary Artery Disease: Reduced blood flow to the heart muscle.
- Heart Valve Disease: Problems with the heart valves that control blood flow.
- Enlarged Heart: An abnormally large heart.
- Myocardial Infarction (Heart Attack): Evidence of past or present heart damage.
It's important to note that an ECG is just one tool used to assess heart health. A healthcare professional will consider the ECG results in conjunction with other tests, such as a physical exam and blood tests, to make an accurate diagnosis. If you are concerned about your heart health, it's essential to consult with a doctor. Mount Sinai's Electrocardiogram Information offers more details.
