HEART AND CIRCULATION
Echocardiography
Specialized ultrasound imaging that evaluates heart structure, chamber size, valve movement, function and blood flow.
THE SHORT VERSION
Testing helps answer a clinical question.
Echocardiography is an ultrasound examination of the heart. It helps characterize structural and functional cardiac concerns and answers different questions than an electrocardiogram.
What is this test?
Echocardiography is an ultrasound examination of the heart. It helps characterize structural and functional cardiac concerns and answers different questions than an electrocardiogram.
Echocardiography examines the heart with ultrasound, including chambers, valves, movement, and selected blood-flow information. It helps characterize structural disease and its effects. The examination is different from an ECG, which records electrical activity. A finding needs to be interpreted with the animal's signs and disease stage before choosing medication. Some patients may need monitoring rather than immediate treatment. Ask which structure is affected, whether heart failure or another complication is present, and what home observations and future measurements are useful.
What information can it provide?
- Heart chamber size and wall appearance can be evaluated.
- Valve movement and selected abnormalities can be assessed.
- Doppler ultrasound may provide information about blood-flow direction and velocity.
- The examination can help estimate selected aspects of cardiac function.
Heart disease describes a problem with the heart, but it does not always mean that the animal is in heart failure. The examination and tests help identify the affected structure, the stage of disease, and whether circulation or breathing is compromised. Different diseases can produce similar outward signs, and some animals have substantial disease before an owner notices a change. Treatment and monitoring therefore depend on the diagnosed problem, not simply on the presence of a murmur or the animal's age.
Imaging provides information about location, size, shape, and structural changes. Radiographs and ultrasound often answer different questions, so one does not simply replace the other. Images may reveal a complication or guide sampling without establishing the exact microscopic cause. Some procedures require sedation or anesthesia to obtain accurate images safely. Ask what the proposed study is expected to clarify and how its possible results would influence treatment, further testing, or referral.
When might your veterinarian recommend it?
- Investigate a murmur, suspected heart disease, unexplained collapse or concerning imaging findings.
- Characterize known cardiac disease or monitor changes over time.
- Support medication, anesthesia or referral decisions when clinically appropriate.
What can owners do before the visit?
- A small patch of fur may be clipped to improve contact.
- Most animals are positioned gently; sedation is individualized.
- Bring previous chest images, electrocardiograms and medication information.
Ask the team whether the planned study requires fasting, sedation, anesthesia, contrast material, or changes to the usual medication schedule. Requirements depend on the patient, species, and procedure; do not withhold food or medication by copying instructions from another visit. Bring previous results and the current treatment list so that findings can be compared. After a sedated or anesthetized study, obtain written recovery and feeding instructions and a contact plan for unexpected problems.
What can this test not tell you by itself?
- Echocardiography is not the same as an electrical rhythm study.
- Image quality, body size and movement influence interpretation.
- Some heart conditions also require radiographs, blood pressure, rhythm monitoring or laboratory testing.
A recheck is not simply a repeat of the first appointment. It assesses whether the original problem is improving, whether complications are appearing, and whether the treatment remains appropriate. The useful measures may include comfort, function, intake, body weight, examination findings, or selected tests. Ask which changes are expected before the visit and which should trigger an earlier call. Improvement in one sign does not always mean that every part of the disease has resolved.
Do not change medication, interpret an abnormal number as a diagnosis or delay urgent treatment without direction from your veterinary team.
Useful questions for your appointment
- What structural or valve question is the study designed to answer?
- Should an electrocardiogram or chest radiographs also be considered?
- How often, if at all, should this study be repeated?