An electrocardiogram, also called an EKG or ECG, records the electrical signals that coordinate your heartbeat.
The recording shows how quickly your heart beats, whether its rhythm is regular, and how electrical signals travel through it. Your provider uses this information to help evaluate specific heart-related concerns.
Small adhesive patches called electrodes are placed on your chest and limbs. Wires connect them to a machine that records your heart’s electrical activity as a series of waveforms.
The electrodes detect signals already produced by your heart. They do not send electricity into your body.
An EKG can provide information about:
Some findings may suggest a heart condition, medication effect, or electrolyte disturbance. Further testing may be needed to understand their significance.
Your provider may recommend testing when evaluating palpitations, an irregular pulse, dizziness, or other symptoms that could involve the heart.
An EKG may also be used to monitor a known condition or assess the effects of certain medications. The decision depends on your symptoms, history, and clinical circumstances.
For new or severe chest pain, severe shortness of breath, or suspected heart attack symptoms, call 911 rather than scheduling an office test.
The team reviews the reason for testing and explains the procedure. You lie down while electrodes are attached to your chest and limbs.
Small areas of skin may be cleaned or hair clipped to improve contact. You remain still and breathe normally while the recording is collected.
Once the recording is complete, the electrodes are removed and the results are prepared for clinical review.
A resting EKG records electrical activity while you lie still. An exercise stress test evaluates the heart’s response as physical effort increases, usually with ongoing monitoring.
The tests answer different clinical questions. Your provider determines which assessment is appropriate; a resting EKG alone does not establish exercise safety or measure aerobic fitness.
A normal recording is reassuring within the context of the assessment, but it cannot rule out every heart condition.
A resting EKG captures a short period of activity. Rhythm changes that come and go may not occur during the recording, and some heart conditions require other tests.
Persistent or recurring symptoms should still be discussed with your provider.
An abnormal result does not always mean a serious heart problem. Some findings reflect normal variation, medication effects, or recording interference.
Your provider considers the pattern, your symptoms, and any previous results. Depending on the findings, next steps may include a repeat recording, laboratory testing, longer-term rhythm monitoring, imaging, or cardiology evaluation.
Urgent findings require prompt medical attention.
No. EKG testing is selected according to clinical need rather than automatically recommended for every person.
Routine screening is generally not recommended for adults without symptoms who are at low cardiovascular risk. Your provider considers your individual circumstances before ordering the test.
Your provider reviews the recording and explains any findings relevant to your care.
The discussion may include whether the result needs follow-up, how it compares with earlier testing, and whether additional evaluation is appropriate. Recommendations reflect your overall health picture rather than the machine’s automated interpretation alone.