an exercise part and a rest part.
The patient has an IV (intravenous) line placed in the arm, EKG patches are applied to chest and connected to an EKG machine to monitor the heart. Then the patient exercises as hard as possible on the treadmill to give information about how well the heart functions with exercise. One minute before stopping exercise, the tracer, sestamibi, is injected IV to give the tracer time to circulate through the bloodstream. Then one lies flat on a table with arms above the head. A large imaging camera is brought close to the chest for the first set of scans. This part of the scan lasts about 25 minutes.
A second set of pictures is taken approximately 3 hours after the injection. The patient should not eat but can drink fluids that do not contain caffeine. The entire test takes approximately 5 to 6 hours.
To prepare for the stress exercise sestamibi scan, the patient should not drink or eat anything containing caffeine for 24 hours before the test (this includes decaf coffee and chocolate) and should not eat or drink after midnight and not smoke on the day of the test. Most medications are taken as usual; however, one should check in advance with the doctor or nurse. Diabetics also should seek special instructions from the doctor or nurse.
The amount of radiation from the scan is no more than from other x-ray tests. However, if there is any chance the patient might be pregnant, she should notify the doctor or nurse before the test is done.
- Stress fracture
A fracture caused by repetitive stress, as may occur in sports, strenuous exercise, or heavy physical labor. Stress fractures are especially common in the metatarsal bones of foot, particularly in runners. Osteoporosis increases the possibility of stress fractures. Treatment is by rest, disuse, and sometimes splinting or casting to prevent reinjury during healing.
- Stress test, pharmacologic
There are a diversity of pharmacologic stress tests. Here this refers specifically to a pharmacologic cardiac stress test in which certain medications are administered that stimulate the heart to mimic the physiologic effects of exercise. One of the medications used in a pharmacologic stress test is dobutamine, which is similar to adrenaline. Dobutamine is carefully […]
- Stress test, physiologic
Although there can be a diversity of physiologic stress tests, this refers here to a physiologic cardiac stress test in which certain medications are administered that stimulate the heart to mimic the physiologic effects of exercise. One of these medications is dobutamine, which is similar to adrenaline. Dobutamine is carefully administered to gradually increase the […]
- Stress testing, exercise cardiac
An abnormal EKG at rest, which may be due to abnormal serum electrolytes, abnormal cardiac electrical conduction, or certain medications, such as digitalis; Heart conditions not related to CAD, such as mitral valve prolapse (drooping) or hypertrophy (increased size) of the heart; or An inadequate increase in the heart rate and/or blood pressure during exercise. […]
- Stretch, quadriceps
Lie on side. Rest head on pillow or hand. Bend knee that is on top. Grab heel of that leg. Gently pull that leg until front of thigh stretches. Hold position. Reverse position and repeat.