A cardiogram, more accurately referred to as an electrocardiogram (ECG or EKG), is a quick and painless test used to record the electrical activity of your heart.
Understanding Electrocardiograms (ECGs/EKGs)
An ECG/EKG uses small electrodes attached to your chest, arms, and legs to detect the electrical signals produced by your heart. These signals are then recorded as a series of waves on a graph or displayed digitally. The pattern of these waves provides valuable information about:
- Heart Rate: How fast your heart is beating.
- Heart Rhythm: Whether your heart is beating regularly or irregularly (arrhythmia).
- Heart Size: Signs of enlargement of heart chambers.
- Heart Damage: Evidence of previous heart attacks or other heart damage.
- Effects of Medications: How medications are affecting your heart.
How an ECG/EKG Works
- Preparation: A technician will clean and prepare the areas where the electrodes will be placed.
- Electrode Placement: Small, adhesive electrodes are attached to your chest, arms, and legs. These electrodes are connected to the ECG/EKG machine.
- Recording: The machine records the electrical activity of your heart for a short period, typically a few minutes. You will need to lie still and breathe normally during the recording.
- Interpretation: A doctor will then analyze the recorded ECG/EKG pattern to identify any abnormalities.
Why is an ECG/EKG Performed?
ECGs/EKGs are commonly performed to:
- Diagnose chest pain or other symptoms of heart disease.
- Monitor heart rhythm irregularities (arrhythmias).
- Assess the damage after a heart attack.
- Evaluate the effectiveness of heart medications or treatments.
- Check the heart before surgery or other procedures.
In summary, an electrocardiogram (ECG or EKG) is a valuable diagnostic tool that provides a snapshot of your heart's electrical activity, helping doctors identify and manage a wide range of heart conditions.
