How does treadmill stress testing work?
What do patients need to do before undergoing treadmill stress testing?
Before a patient's scheduled treadmill test, their healthcare provider must tell them to avoid the following in the hours leading up to the test:
- They must not eat anything
- They must not smoke or use/consume any tobacco products
- They must avoid anything with caffeine for 24 hours before the test
- They must avoid using specific medication (this needs to be discussed with the provider as early as possible so they're aware of what the patient is taking)
Besides these, the provider will tell the patient to relax before and during the exam because anxiety and distress can raise the heart's electrical activity, heart rate, and blood pressure, affecting the test results.
Providers should also remind patients to wear comfortable, lightweight clothing and walking shoes.
How do healthcare providers conduct treadmill stress testing?
Once the patient is ready to take the treadmill test, the healthcare provider will do the following:
- They will take a brief medical history of the patient
- They will take the patient's vital signs, blood pressure, and heart rate while at rest
- They will attach adhesive electrodes to the patient's chest beneath the clothes. These will connected to an echocardiogram, which will be used to monitor their ECG. Resting ECG will be recorded
- After taking all of these, the provider will ask the patient if they're ready, and if they are, the provider will activate the treadmill
- The test begins with walking
- Over time, the pace of the treadmill will become faster, so the patient will have to start jogging after a while
- The test will end after 10 to 15 minutes (this should be enough time to record the necessary readings)
- After the test, the patient will be asked to lie down on an examination bed
- While the patient is in bed, the provider will monitor the patient's heart rate, blood pressure, and ECG for three to five minutes
- After gathering the data, the professional will end the whole test, and the patient is free to go. The provider will review the data, compile the results, and provide the patient with the results in a day or two
One thing for providers to note: they should ask the patient how they are now and then during the exercise portion. The test must be stopped immediately if the patient mentions feeling chest pain, dizziness, extreme fatigue, or out of breath.
What are the next steps after the stress test results have been given?
If the stress test results show normal heart rate, blood pressure, and ECG throughout the examination, then the patient's all good.
Suppose any abnormalities are detected throughout the test, like high blood pressure spikes, abnormal ECG, and high or low heart rates. In that case, the healthcare provider will have the patient undergo more tests to determine the problem causing it, such as Stress Echocardiogram, Nuclear Stress Test, and Cardiac Catheterization.
Please note that what counts as normal and abnormal will depend on the patient's age and fitness level, and the baseline measurements for normal vary from provider to provider.