stress test

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Related to Exercise stress test: echocardiogram

stress test

or

exercise electrocardiography,

in medicine, a test that evaluates the performance of the heart by subjecting it to controlled amounts of physical stress. Such tests, which include walking on a treadmill, measure the heart's reaction to an increased demand for oxygen. The test ends when the patient reaches a predetermined heart rate or experiences chest pain or fatigue. See electrocardiographyelectrocardiography
, science of recording and interpreting the electrical activity that precedes and is a measure of the action of heart muscles. Since 1887, when Augustus Waller demonstrated the possibility of measuring such action, physicians and physiologists have recorded
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stress test

[′stres ‚test]
(computer science)
A test of new software or hardware under unusually heavy work loads.
(engineering)
A test of equipment under extreme conditions, outside the range anticipated in normal operation.
(medicine)
A procedure involving continuous electrocardiographic monitoring during exercise, as running a treadmill, to test the circulatory response to physical stress.
References in periodicals archive ?
In the present study, important effects of sleep deprivation on exercise stress test parameters were observed.
Exercise stress test was positive in 9 patients, 2 of them showing a strongly positive test.
Comparison of the exercise stress test parameters of FMF and control groups is summarized in Table 2.
There are two major types of stress tests that are pharmacological (85.5%) and use coronary vasodilators such as adenosine and exercise stress tests using the Bruce protocol (14.5%).
Two main isot ope s are u se d: T h a lliu m Th 201 and TechnetiumTc 99 m.13,14 The advantages of technetium, which is given in combination with its carrier, sestamibi, is that the quality of imaging is better and the imaging itself takes less time than with thallium.12 When a full ECG exercise stress test is performed, these agents are injected at 1 minute prior to the end of exercise in order to allow tracer to circulate at maximal heart rate and be distributed within myocardium.
A recent meta-analysis compared the performance of exercise stress test (EST), single photon-emission computed tomographic myocardial perfusion imaging (SPECT-MPI), with both exercise and pharmacologic stress, as well as stress echocardiography in patients with a 25% to 75% pretest risk for coronary disease.
In patients with reversible myocardial ischemia, there was no increase in hs-cTnI concentrations until 4.5 h after the exercise stress test: 6.9 (3.9-9.3) ng/L, P = 0.01 vs baseline concentrations.
The patients underwent a standardized exercise stress test and echocardiographic evaluation at the VA Medical Center during 1986-2011.
Regardless of the method, the normal response to an exercise stress test is measured as elevations in HR and blood pressure (BP) that are proportional to the increased exertion, which also then reflects in the expected recovery at cessation.
All patients underwent exercise stress test and achieved optimum heart rate ( greater than 85% of target heart rate).
The 15-m ISWRT is thus a highly safe exercise stress test. It is highly probable that physical tests for middle-aged adults will be undertaken by people who typically get insufficient exercise and feel they lack physical strength.
Primary care physicians were significantly more likely than were cardiologists or surgeons to order a pharmacologic stress test in patients who did not need one because they were able to complete the less costly exercise stress test.