An echocardiogram is done the same way on women as on men: you lie on an exam table while a technician (called a sonographer) moves an ultrasound wand across your chest to capture moving images of your heart. The test typically takes 30 to 60 minutes, requires no needles or radiation, and is painless. But if you’re a woman wondering what to expect in terms of clothing, positioning, and privacy, here’s a detailed walkthrough.
What to Wear and How to Prepare
You’ll need to undress from the waist up so the sonographer can access your chest. Most facilities provide a medical gown that opens in the front. You will be asked to remove your bra, since underwire and thick fabric can interfere with the ultrasound signal. Loose, comfortable clothing like a t-shirt and stretchy pants makes changing easier, and it helps to avoid belts, zippers, or layered tops.
No other preparation is needed for a standard echocardiogram. You can eat, drink, and take your medications as usual beforehand. If your doctor has ordered a stress echocardiogram (which combines the ultrasound with exercise or medication to raise your heart rate), you may receive separate instructions about food and caffeine.
Step by Step: What Happens in the Room
Once you’re changed into a gown, the sonographer will have you lie on your left side on the exam table. This position shifts the heart closer to the chest wall and gives clearer images. You may be repositioned onto your back at certain points during the test.
First, the sonographer attaches small sticky patches called electrodes to several spots on your chest. These connect to an ECG monitor that tracks your heart rate and rhythm throughout the exam. Next, they apply a water-based gel to your skin. The gel eliminates air gaps between the ultrasound wand and your body, which helps sound waves travel more effectively. Some facilities warm the gel beforehand, though it may still feel cool on contact.
The sonographer then presses the transducer (a handheld device that looks like a thick microphone) against your chest and moves it to different positions. They’ll place it between your ribs, near your breastbone, below your left breast, and sometimes just below your ribcage. The wand sends sound waves through your chest wall to the heart, then picks up the echoes that bounce back. A computer translates those echoes into real-time video of your heart’s chambers, valves, and blood flow.
You’ll be asked to hold still, breathe in and hold your breath, or shift positions at various points so the sonographer can capture specific views. The pressure of the wand against your ribs can feel firm, and some spots may be mildly uncomfortable, but it shouldn’t be painful.
Privacy and Modesty During the Exam
This is often the biggest concern for women, and sonographers handle it routinely. Only the area being scanned is exposed at any given time. The sonographer will reposition your gown to uncover just the section of chest they need, and a towel or sheet covers the rest of your body. They work methodically from one area to the next, re-draping as they go.
For women with larger breasts, the sonographer may ask you to lift or hold your breast to one side so they can place the wand directly against your ribcage underneath. This is normal and necessary because breast tissue can absorb or scatter the ultrasound signal, making the images harder to read. The sonographer does this quickly and will tell you exactly what they need before touching you.
If you’d feel more comfortable with a female sonographer, it’s completely reasonable to request one when scheduling your appointment. Not every facility can guarantee it, but most will try to accommodate.
How Breast Tissue Affects Image Quality
Dense breast tissue or breast implants can sometimes make it harder to get optimal images, because the ultrasound waves must pass through more tissue before reaching the heart. Sonographers are trained to work around this by adjusting the wand angle, applying more pressure, or using different imaging windows on the chest. In most cases, they can still get all the views they need. If image quality is limited, your cardiologist may note it in the report or recommend additional imaging.
What the Test Can Reveal
Your doctor likely ordered the echocardiogram for a specific reason: to investigate symptoms like shortness of breath, chest pain, or an irregular heartbeat, or to monitor a known condition. The test can diagnose a wide range of heart problems, including valve disease, weakened heart muscle (cardiomyopathy), fluid around the heart (pericarditis), blood clots in the heart chambers, congenital heart defects, and enlargement of the aorta.
One key measurement is ejection fraction, which tells your doctor what percentage of blood your heart pumps out with each beat. A normal ejection fraction is generally 55% or higher. The test also measures the size of your heart chambers. Women’s hearts tend to be smaller than men’s. Research from the American Heart Association found that the average left ventricle in women measures about 41 millimeters across, compared to 46 millimeters in men. This means your results are interpreted using sex-specific reference ranges, so a measurement that’s normal for a woman might look different from what’s normal for a man.
After the Test
When the sonographer finishes, they’ll wipe the gel off your chest with a towel. Some residue may remain, and you can wash it off later with soap and water. You can get dressed immediately and go about your day with no restrictions.
The sonographer captures the images, but a cardiologist reviews and interprets them. Results are usually available within one day. If a cardiologist performed the test directly, you may get preliminary results right away. Otherwise, your referring doctor will contact you once the final report is ready, or you may see the results posted to your patient portal.
Stress Echocardiograms: What’s Different
A stress echocardiogram adds a physical component. The sonographer takes a set of resting images first, then you either walk on a treadmill or receive a medication through an IV that makes your heart beat faster. Immediately after your heart rate peaks, you lie back down and the sonographer captures a second set of images. Comparing the two sets shows how well your heart handles increased demand.
The clothing and privacy considerations are the same as a standard echo. The main difference is that you’ll be moving and sweating, so the electrodes and gel may need to be reapplied. The entire appointment takes longer, often 60 to 90 minutes, though the actual imaging portions are still relatively brief.