An electrocardiogram (EKG or ECG) is a non-invasive test that records the electrical activity of the heart. It provides immediate information about heart rhythm, heart rate, and patterns that may suggest structural or ischemic heart disease.
An EKG is one of the most fundamental tools in cardiovascular evaluation and is often performed during a consultation visit.
The EKG is often the first diagnostic step in evaluating heart rhythm, ischemia, and structural changes. It complements imaging studies, stress testing, and rhythm monitoring.
When interpreted in the context of a full cardiovascular consultation, it helps guide precise and efficient decision-making.
An EKG may be performed to evaluate:
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Chest discomfort or pressure
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Palpitations or irregular heartbeat
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Shortness of breath
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Dizziness or fainting
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Elevated blood pressure
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Pre-operative clearance
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Medication monitoring
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Routine cardiovascular screening
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Abnormal findings on prior testing
It is frequently the first step in determining whether further cardiac testing is needed.
An EKG can identify:
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Atrial fibrillation and other arrhythmias
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Conduction abnormalities (AV block, bundle branch block)
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Signs of prior heart attack
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Acute ischemic changes
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Left ventricular hypertrophy
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Electrolyte-related changes
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Medication effects on cardiac conduction
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Pacemaker function
While an EKG provides critical information, it represents a snapshot in time. Some conditions may require additional monitoring or imaging for complete evaluation.
Small adhesive electrodes are placed on the chest, arms, and legs to record electrical signals from the heart.
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The test takes approximately 5–10 minutes
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It is performed in the office
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No radiation is involved
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The procedure is painless
You will be asked to lie still for a brief period while the recording is obtained.
No special preparation is required.
You may be asked to:
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Avoid applying lotion to the chest area prior to the test
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Remove jewelry or upper body garments for electrode placement
You may eat and take medications as usual unless otherwise instructed.
An EKG is completely non-invasive and carries no medical risk.
The electrodes only record electrical activity — they do not deliver electricity to the body.
In most cases, results are reviewed immediately during your visit.
If abnormalities are identified:
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Additional testing may be recommended
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Medication adjustments may be considered
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Follow-up planning will be discussed
The EKG serves as an important baseline for future comparison and ongoing cardiovascular care.