conditions is then compared with imaging obtained after coronary va- sodilation. Patients are also queried regarding adverse side effects, which may include light-headedness, chest pain or pressure, and nausea. Echo- cardiographic images (in contrast to perfusion images are made during dobutamine infusions. In some cases, like exercise stress tests, pharmaco- logic studies may be prematurely terminated due to the development of worsening symptoms or signifi cant heart rhythm irregularities.
QUESTION: Can the results of these tests be used to develop an exercise prescription?
ANSWER: It is difficult to use the re- sults of these tests to develop an exercise prescription. This is pri marily because the rises in heart rate and oxygen consumption dur- ing pharmacologic testing are far lower than those achieved with exercise stress. These tests simply suggest whether there is underly- ing myocardial is chemia and coro- nary artery disease. Consequently, for patients who have recently un- dergone pharmacologic stress test- ing, many clinicians recommend an initial exercise heart rate that is 20 y to 30 beats above standing rest as the prescribed training intensity, using perceived exertion as an ad- junctive intensity modulator.
conditions is then compared with imaging obtained after coronary va- sodilation. Patients are also queried regarding adverse side effects, which may include light-headedness, chest pain or pressure, and nausea. Echo- cardiographic images (in contrast to perfusion images are made during dobutamine infusions. In some cases, like exercise stress tests, pharmaco- logic studies may be prematurely terminated due to the development of worsening symptoms or signifi cant heart rhythm irregularities.QUESTION: Can the results of these tests be used to develop an exercise prescription?ANSWER: It is difficult to use the re- sults of these tests to develop an exercise prescription. This is pri marily because the rises in heart rate and oxygen consumption dur- ing pharmacologic testing are far lower than those achieved with exercise stress. These tests simply suggest whether there is underly- ing myocardial is chemia and coro- nary artery disease. Consequently, for patients who have recently un- dergone pharmacologic stress test- ing, many clinicians recommend an initial exercise heart rate that is 20 y to 30 beats above standing rest as the prescribed training intensity, using perceived exertion as an ad- junctive intensity modulator.
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