Stress Test
Procedure Overview
What is a stress test?
Cardiac stress tests are tests used to determine whether or not there are areas of the heart that are not working well (echocardiogram studies) or are not receiving enough blood flow (nuclear perfusion studies). Images of the heart are taken both before and after either exercise or medication infusion. Cardiologists look at both sets of images to determine if there are areas of the heart that may not be getting enough blood flow. Decreased blood flow to the heart muscle can cause the heart to work harder and less effectively. On occasion, stress tests do not include imaging the heart – they are exercise studies only.
Early monitoring and diagnosis of heart disease enables treatment to begin early.
Reasons for Stress Testing
-
Angina (chest pain/pressure/discomfort)
-
Increased frequency of chest pain
-
Shortness of breath at rest/with exertion
-
Arrhythmia (abnormal heart rhythm) diagnosis
-
Syncope (passing out)
-
Pre-op clearance for people at high risk for coronary artery disease
-
Testing medication effectiveness
Risks of Procedure
Risks are very low. Healthcare professionals monitor you closely during the entire procedure. Changes may occur during the stress test. Blood pressure may change (very low or very high), heart rate may go very fast or very slow or become irregular. In very rare instances, heart attacks may occur. Emergency equipment and trained personnel are available for all emergencies.
What You Can Expect
Before test
Ask your physician what medications you should or should not take before the test. No caffeine consumption for 24 hours prior to your test. No eating for 12 hours prior to your study. It is recommended not to smoke 4 hours prior to your study.
Wear a 2-piece, comfortable outfit with good walking shoes (for exercise studies). Allow 30 minutes prior to your scheduled time for checking in and getting ready for the test. You may be asked to change into a hospital shirt or gown. A locker is provided for your personal belongings.
Prior to the study, your chest will be cleansed and EKG patches will be placed on your chest. For nuclear and medication studies, an IV will be started by our trained professionals.
During test
A heart monitor will be worn to record your heart rhythm as you walk. Your blood pressure will also be monitored during the study. For some tests, your oxygen level will be monitored as well.
By increasing the speed and incline on a treadmill the heart muscle is challenged. For individuals who cannot walk or move well, a medication may be used for this same reason.
It is important for you to report any of the following symptoms during the test:
After test
Your test information may be reviewed by a cardiologist prior to going home. Results will be available to your ordering physician within 3 business days, if you are an outpatient. Test results will be available the same day if you are an inpatient.