You may be reading this book because you think
you might have heart disease but aren’t yet sure.
Keep in mind that heart disease doesn’t always
announce itself with symptoms. That means you
could have heart disease and still feel perfectly
fine. The best course is to talk with your
doctor about your personal degree of heart
disease risk and about whether getting tested
is a good idea.
Most screening tests for heart disease are done outside of the body and are painless. After taking a careful medical history and doing a physical examination, your doctor may give you one or more of the following tests:
Most screening tests for heart disease are done outside of the body and are painless. After taking a careful medical history and doing a physical examination, your doctor may give you one or more of the following tests:
Electrocardiogram (ECG or EKG) makes a graph of the heart’s electrical activity as it beats. This test can show abnormal heartbeats, heart muscle damage, blood flow problems in the coronary arteries, and heart enlargement.
Stress test (or treadmill test or exercise ECG)
re c o rds the heart ’s electrical activity during
exercise, usually on a treadmill or exercise bike.
If you are unable to exercise due to arthritis or
another health condition, a stress test can be
done without exercise . Instead, you can take
a medicine that increases blood flow to the
h e a rt muscle and shows whether there are any
problems in that flow.
Nuclear scan (or thallium stress test) shows the working of the heart
muscle as blood flows through the heart . A small amount of radioactive
material is injected into a vein, usually in the arm, and a camera
records how much is taken up by the heart muscle.
Echocardiographic changes sound waves into pictures that show the
heart’s size, shape, and movement. The sound waves also can be u s e d
to see how much blood is pumped out by the heart when it contracts.
Coronary angiography (or angiogram or arteriography) shows an
x ray of blood flow problems and blockages in the coronary arteries.
A thin, flexible tube called a catheter is threaded through an artery
of an arm or leg up into the heart. A dye is then injected into the
tube, allowing the heart and blood vessels to be filmed as the heart
pumps. The picture is called an angiogram or arteriogram.
Ventriculogram is frequently a part of the x-ray dye test described
before. It is used to get a picture of the heart’s main pumping chamber,
typically the left ventricle.
Intracoronary ultrasound uses a catheter that measures blood flow.
It creates a picture of the coronary arteries that shows the thickness
and other features of the artery wall. This lets the doctor see blood
flow and any blockages.
In addition, several new, highly sensitive
screening tests have been developed.
Ask your doctor about these tests:
Carotid doppler ultrasound uses
sound waves to detect blockages
and narrowing of the
carotid artery in the neck,
both of which can signal an
increased risk for heart
attack or stroke.
Electron-beam computed
tomography is a superfast
scan that provides a snapshot
of the calcium buildup
in your coronary arteries.