New patient guide clarifies what to expect during an echocardiogram
A concise, patient-focused guide explains why an echocardiogram is ordered, the different test types, how to prepare, what happens during the scan, and how results are interpreted.
Health providers and patient advocates are urging clearer, more accessible information about the echocardiogram as a routine diagnostic tool for heart care. The ultrasound exam, commonly called an echo, is used to visualize the heart’s structure and blood flow and has become central to diagnosing murmurs, chest pain, palpitations and suspected heart failure. This guide distills clinical uses, the main types of echocardiograms, preparation tips, what patients should expect during the test, and how clinicians interpret the findings.
Why doctors order an echocardiogram
An echocardiogram is often requested after a hearing of a murmur or when patients report symptoms such as shortness of breath, chest discomfort, lightheadedness or palpitations. Physicians use the test to confirm or exclude structural problems in the heart’s chambers or valves, and to measure chamber size and pumping function.
Beyond initial diagnosis, echocardiograms are used to assess damage from a suspected heart attack and to monitor chronic conditions like cardiomyopathy or valvular disease. Clinicians also rely on serial echoes to track treatment response, adjust medications, and decide when more invasive interventions may be necessary.
Types of echocardiograms and when they’re used
The most common exam is the transthoracic echocardiogram, in which a technician moves a handheld transducer across the chest wall to capture real-time images of the heart. This noninvasive test provides information on chamber size, wall thickness and overall ventricular function and can be combined with Doppler to assess blood flow and valve performance.
Other modalities include the stress echocardiogram, which compares images at rest and during exercise or pharmacologic stress to reveal exercise-induced ischemia, and the transesophageal echocardiogram, which places a probe in the esophagus to obtain higher-resolution images when clearer views are needed. Three-dimensional and Doppler techniques further expand diagnostic detail and are selected based on clinical questions and the area of interest.
How patients should prepare for the test
Most transthoracic echocardiograms require minimal preparation; patients should wear comfortable, loose clothing and bring a list of current medications. It is important to inform the provider about blood thinners or other drugs, as some tests or sedation protocols may require temporary adjustment.
For a transesophageal echocardiogram, clinicians generally ask patients to fast for several hours beforehand and arrange for someone to drive them home if sedatives are administered. For stress echocardiography, patients should follow instructions about withholding beta blockers or other agents only as directed to ensure an adequate test result.
What happens during the procedure
During a transthoracic echo, a sonographer applies gel to the chest and moves the transducer to capture images from multiple angles while the patient lies on the table and briefly holds their breath at times. The scan usually takes 30 to 60 minutes, is painless, and may include Doppler recordings to measure blood flow across valves.
For a stress echocardiogram, images are taken at rest and then again as the heart rate increases on a treadmill or bicycle, or after medication that raises heart rate. In a transesophageal study, the throat is numbed and a thin probe is guided into the esophagus to obtain detailed views; sedation is commonly used and recovery may require a short observation period.
Interpreting echocardiogram results
Echocardiogram reports typically document the reason for testing, measurements of chamber size and wall thickness, ventricular function including ejection fraction, valve appearance and motion, and any abnormal findings such as clots or defects. Clinicians integrate these quantitative measures with symptoms and other tests to form a diagnosis and treatment plan.
A normal echocardiogram indicates heart structure and function are within expected limits, whereas abnormal findings can signal valve disease, heart muscle damage, congenital defects, or infection of the heart lining. When results are unclear or suggest complex disease, providers may recommend further imaging, additional cardiac testing, or specialist consultation.
Safety, risks and recovery
Standard transthoracic echocardiography is noninvasive and carries no known long-term risks; patients may experience mild discomfort from cold gel or brief pressure from the transducer. Transesophageal echocardiography is considered invasive by comparison and carries small risks related to sedation and passage of the probe, such as throat soreness, rare esophageal injury, or reactions to sedatives.
Most patients return to normal activities immediately after a standard echo, while those who received sedatives for a transesophageal exam are advised to arrange transportation and to avoid driving until fully alert. Patients with questions about specific risks or recovery should discuss them directly with the ordering clinician.
Clear communication between patients and providers improves the echocardiogram experience and the clinical value of the test. If you are scheduled for an echocardiogram, ask your clinician which type has been ordered, whether any medications need to be adjusted beforehand, and how results will be shared and acted upon after the exam.
