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Call 999 if you have chest pain that is severe, lasts more than 15 minutes, or comes with sweating, sickness or breathlessness — particularly if you have had a heart attack before. Do not wait for a scheduled scan.

After a heart attack, an echocardiogram is used to measure how well the heart is pumping, which areas of muscle were affected, whether any valve has been damaged, and whether complications have developed. A scan is normally done during the admission and repeated some weeks or months later to see how much function has recovered. These scans are arranged by your cardiology team, and the results feed directly into decisions about medication and devices.

Why imaging follows a heart attack

A heart attack happens when blood flow to part of the heart muscle is blocked. The muscle supplied by that artery is starved of oxygen, and some of it is injured or dies. What happens next is not fixed. Some muscle that looked lifeless in the first days recovers over the following weeks as the blood supply is restored and swelling settles. Some does not.

Imaging exists to answer that question. Specifically:

  • How strongly is the heart pumping now? This is measured as the ejection fraction — the proportion of blood the main pumping chamber pushes out with each beat. It is the single number that drives most treatment decisions after a heart attack. We explain it in more detail in ejection fraction explained.
  • Which parts of the muscle are affected? Damaged segments move less, or not at all. This is described as a wall motion abnormality, and the pattern tells the cardiologist which artery was involved and how much territory was lost.
  • Have the valves been damaged? A heart attack can injure the structures that hold the mitral valve closed, causing it to leak.
  • Are there complications? A clot can form in the damaged part of the ventricle. The muscle can thin and bulge. Fluid can collect around the heart. Rarely, a hole or a tear develops.
Typical imaging timeline after a heart attack In hospital 6–12 weeks Longer term Baseline scan: extent of damage, early complications Reassessment: how much function has recovered Surveillance if function remains reduced
Imaging is repeated because early function is often not final function.

When scans are usually done

During the admission. An echocardiogram is standard before discharge. It establishes the baseline and picks up early complications while they can still be acted on quickly.

A few weeks to a few months later. This is the important one. Heart muscle that was stunned rather than dead can recover, and the ejection fraction measured in the first days is often not the number you end up with. Repeating the scan once things have settled gives the true picture.

That timing is not administrative. If the ejection fraction remains significantly reduced after a proper period on optimal medication, it opens a conversation about an implantable defibrillator. Scanning too early risks acting on a number that would have improved; leaving it too long delays a decision that protects against sudden cardiac death.

Ongoing. If function stays reduced, or you develop new symptoms such as breathlessness, swollen ankles or palpitations, repeat imaging is used to track change.

What the report needs to cover

A follow-up echocardiogram after a heart attack is not a general heart check. It is answering specific questions for a specific reader — the cardiologist making the next decision. A useful report covers, at minimum:

What is reported Why the cardiologist needs it
Left ventricular function — ejection fraction, with the method used Drives medication choices and defibrillator eligibility
Wall motion — which segments are impaired and how severely Shows which territory was affected and whether it has recovered
Valve status — particularly the mitral valve New leaking after a heart attack changes management
Complications — clot in the ventricle, aneurysm, fluid around the heart May require anticoagulation or urgent referral
Right ventricle and pressures Relevant where the right side was involved or symptoms persist
Comparison with previous imaging where available Direction of travel matters more than a single snapshot

From our practice

From our practice

The patients we scan in this group are almost always referred rather than self-referring. They come from cardiology or from a post-discharge team, and the request is specific: an echocardiogram to assess recovery and function after a heart attack.

That shapes how we report. The referring cardiologist has a decision waiting on the other side of the report — whether to adjust medication, whether to escalate, whether the patient meets criteria for a device. So the report has to clearly cover left ventricular function, wall motion, valve status, and any complications relevant to that next decision. A report that says the scan was satisfactory is not useful to someone deciding whether a defibrillator is indicated.

It also means we are working inside a plan someone else has set. We do not set surveillance intervals for post-heart-attack patients, and we would not encourage anyone to arrange this imaging outside their cardiology follow-up.

Describes our referral pattern in general terms rather than any individual patient.

Other tests you may be offered

  • Cardiac MRI — better than ultrasound at distinguishing scarred muscle from muscle that could still recover, and more accurate for measuring volumes. Often used where the echocardiogram leaves a question open.
  • Coronary angiography or CT coronary angiography — these look at the arteries themselves. An echocardiogram shows the consequences of a blockage, not the blockage. See echo versus CT.
  • Rhythm monitoring — an ECG or a longer Holter recording, since rhythm disturbances are more common after damage to the heart muscle.
  • Stress testing — used to assess whether any remaining narrowing is limiting blood flow during exertion.

Common questions

How soon after a heart attack should I have a repeat echocardiogram?

Usually some weeks to a few months afterwards, once medication has been optimised and any stunned muscle has had time to recover. Your cardiologist sets the interval based on how the initial scan looked and how you are doing.

Will my ejection fraction improve?

It often does, particularly where the artery was reopened quickly and where medication is optimised. Improvement is not guaranteed, and it varies with how much muscle was permanently damaged. The repeat scan is what tells you.

Can an echocardiogram show whether my arteries are blocked?

No. Ultrasound cannot image the coronary arteries directly. It shows the effect on the heart muscle. Assessing the arteries themselves needs CT coronary angiography or invasive angiography.

Do I need a scan if I feel completely well?

Follow-up imaging is based on what the earlier scan showed and on your treatment plan, not only on symptoms. Reduced pumping function frequently causes no symptoms at all in the early stages, which is exactly why it is measured rather than guessed at.

My cardiologist has asked for an echocardiogram and the wait is long. Can I have it privately?

Yes. Where your cardiologist has requested surveillance imaging, we can carry out the echocardiogram and send the report to them directly. Bring the referral or the request details so we report against the right questions. The scan costs £350.

When do I get the results?

You receive instant verbal results at the appointment, with the written report following within 24 hours — including to your referring cardiologist where you have asked us to send it.

Has your cardiologist requested surveillance imaging?

Consultant-led echocardiography · Reported to your referrer · Written report within 24 hours

29 Weymouth Street, Marylebone, London W1G 7DB · 020 3633 4902 · Contact us

If you have not been asked to have follow-up imaging, speak to your cardiology team first. Surveillance after a heart attack works best inside a plan rather than alongside one. Our cardiac imaging is led by Hootan Mohsenian, MSc — Advanced Practitioner in Echocardiography.

CQC-registered clinic · HCPC-registered sonographers · BMUS member · ICO-registered. Reports can be shared securely with your NHS GP or specialist at your request.

References

  1. National Institute for Health and Care Excellence. Acute coronary syndromes (NG185). Accessed 30 July 2026.
  2. National Institute for Health and Care Excellence. Myocardial infarction: cardiac rehabilitation and prevention of further cardiovascular disease (CG172). Accessed 30 July 2026.
  3. National Institute for Health and Care Excellence. Chronic heart failure in adults: diagnosis and management (NG106). Accessed 30 July 2026.

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