Patient Education - Lung Cancer Program at UCLA
yourself about lung cancer:
Echocardiogram is a test that uses sound waves to create a moving picture of the
heart. The picture is much more detailed than x-ray image and involves no radiation
Transthoracic echocardiogram (TTE); Echocardiogram - transthoracic; Doppler ultrasound
of the heart; Surface echo
How the Test is Performed
A trained sonographer performs the test, then your heart doctor interprets the results.
An instrument that transmits high-frequency sound waves called a transducer is placed
on your ribs near the breast bone and directed toward the heart. The transducer picks
up the echoes of the sound waves and transmits them as electrical impulses. The echocardiography
machine converts these impulses into moving pictures of the heart.
Echocardiogram works well for most patients and allows doctors to see the heart
beating and to visualize many of the structures of the heart. Occasionally, your
lungs, ribs, or body tissue may prevent the sound waves and echoes from providing
a clear picture of heart function. If so, the sonographer may inject a small amount
of material (contrast) through an IV to better see the inside of the heart.
Very rarely, more invasive testing using special echocardiography probes may be
If the echocardiogram is unclear due to a barrel chest, congestive obstructive
pulmonary disease, or obesity, your health care provider may choose to perform a
transesophageal echocardiogram, or TEE. With TEE, the back of your throat is anesthetized
and a scope is inserted down your throat. On the end of the scope is an ultrasonic
device that an experienced technician will guide down to the lower part of the esophagus,
where it is used to obtain a more clear two-dimensional echocardiogram of your heart.
How to Prepare for the Test
There is no special preparation for the test.
How the Test Will Feel
You will be asked to disrobe from the waist up and will lie on an examination table
on your back. Electrodes will be placed onto your chest to allow for an ECG to be
done. A gel will be spread on your chest and then the transducer will be applied.
You will feel a slight pressure on your chest from the transducer. You may be asked
to breathe in a certain way or to roll over onto your left side.
Why the Test is Performed
This test is performed to evaluate the valves and chambers of the heart in a noninvasive
manner. The echocardiogram allows doctors to evaluate heart murmurs, check the pumping
function of the heart, and evaluate patients who have had heart attacks. It is a
very good screening test for heart disease in certain groups of patients.
A normal echocardiogram reveals normal heart valves and chambers and normal heart
What Abnormal Results Mean
An abnormal echocardiogram can mean many things. Some abnormalities are very minor
and do not pose significant risks. Other abnormalities are signs of very serious
heart disease that will require further evaluation by a specialist. Therefore, it
is very important to discuss the results of your echocardiogram in depth with your
health care provider.
There are no known risks associated with this test.
Abnormal results may indicate heart valve disease, cardiomyopathy, pericardial effusion,
or other cardiac abnormalities. Additional conditions under which the test may be
performed include the following:
- Alcoholic cardiomyopathy
- Aortic dissection
- Aortic insufficiency
- Aortic stenosis
- Arterial embolism
- Atrial fibrillation/flutter
- Atrial myxoma
- Atrial septal defect
- Cardiac tamponade
- Cardiogenic shock
- Coarctation of the aorta
- Ectopic heartbeat
- Heart attack
- Heart failure
- Hypertensive heart disease
- Hypertrophic cardiomyopathy
- Idiopathic cardiomyopathy
- Infective endocarditis
- Ischemic cardiomyopathy
- Left-sided heart failure
- Mitral regurgitation; acute
- Mitral regurgitation; chronic
- Mitral stenosis
- Mitral valve prolapse
- Patent ductus arteriosus
- Pericarditis; bacterial
- Pericarditis; constrictive
- Pericarditis; post-MI
- Peripartum cardiomyopathy
- Primary amyloidosis
- Primary pulmonary hypertension
- Pulmonary valve stenosis
- Restrictive cardiomyopathy
- Right-sided heart failure
- Secondary systemic amyloidosis
- Senile cardiac amyloidosis
- Tetralogy of Fallot
- Transient ischemic attack (TIA)
- Transposition of the great vessels
- Tricuspid regurgitation
- Ventricular septal defect
Review Date: 4/12/2007
Reviewed By: A.D.A.M. Editorial Team: Greg Juhn, M.T.P.W., David R. Eltz, Kelli A.
Stacy. Previously reviewed by Glenn Gandelman, MD, MPH, Assistant Clinical Professor
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