Introduction
An echocardiogram uses ultrasound to show heart structure, pumping strength, valves, and blood flow. The common transthoracic study uses a chest probe; transesophageal echo (TEE) uses a probe passed into the esophagus when clearer views are needed.
It uses no radiation and is widely used for chest pain, breathlessness, palpitations, heart failure, and valve disease. Results are interpreted with symptoms and other tests.
This overview covers transthoracic echo, stress echo, and TEE—the full range of heart ultrasound studies, not only standard 2D transthoracic imaging.
Why this test is done
Echocardiogram is commonly considered in situations such as:
- Assess pumping function (ejection fraction) and chamber size
- Evaluate valve stenosis, regurgitation, or congenital heart disease
- Investigate chest pain, breathlessness, fainting, or palpitations
- Follow-up with high blood pressure, chemotherapy, or known heart disease
- Look for fluid around the heart or suspected clots when clinically indicated
How the test is done
- Transthoracic: gel on the chest and probe images from multiple angles; about 20–45 minutes.
- Doppler measures blood flow speed and direction through valves.
- Stress echo uses exercise or medicine to image the heart under load.
- TEE is done with throat sedation for clearer views in selected situations—it is a separate, more involved study.
Preparation and precautions
- Routine transthoracic echo usually needs no special fasting.
- TEE or stress echo may require fasting and medicine adjustments—follow instructions.
- Bring prior echo/ECG reports and a medicine list.
- Tell staff about chest wounds, pacemakers, or breathing problems.
Understanding results
Your clinician interprets lab or imaging ranges together with your symptoms. Online “normal values” do not always apply to your case.
- Reports describe chamber size, wall motion, ejection fraction, and valve function.
- "Normal" ranges can vary with age and body size.
- Mild findings do not always require treatment.
- Your doctor combines echo with ECG, symptoms, and blood tests.
Risks or limitations
- Transthoracic echo is very low risk; gel and probe pressure may cause brief discomfort.
- Stress echo carries small risks from exercise or stress medicines—monitoring is used.
- TEE may cause sore throat; rare esophagus injury or sedation-related risks.
- Image quality can be limited by body habitus, lung disease, or dressings.
After the test
- After standard echo, wipe off gel and resume normal activity.
- After TEE, do not drive until sedation wears off; mild throat soreness is common.
- Report chest pain or palpitations after stress testing to staff immediately.
- Attend follow-up with your report; do not change heart medicines on your own.
Frequently asked questions
Is an echocardiogram the same as an ECG?
No. ECG shows electrical activity; echo shows structure and pumping. Both are often needed.
Does echo use radiation?
No. It is ultrasound. It can be used in pregnancy when clinically indicated.
How soon will I get results?
Same day to a few days depending on the center. Do not delay emergency care while waiting.
Important caution
This article is general health information. It is not personal medical advice or a prescription.
Your clinician decides whether you need this test, how to prepare, and what the results mean. If you have emergency symptoms, go to hospital without waiting for a lab report.