A patient who has been scheduled for an exercise stress electrocardiogram asks why this test is needed. Which of the following is the nurse's best response?
It determines a target heart rate.
It identifies how much more exercise is needed.
It shows how the heart performs during exercise.
It can predict whether a heart attack may occur.
The Correct Answer is C
Choice A reason: Determining a target heart rate is not the primary purpose of an exercise stress electrocardiogram; it is more about observing the heart's function under stress³.
Choice B reason: Identifying the need for more exercise is not the direct outcome of this test; it is used to assess cardiovascular response to stress³.
Choice C reason: The test is designed to show how the heart performs during exercise, which can help diagnose conditions like coronary artery disease³.
Choice D reason: Predicting a heart attack is not the purpose of an exercise stress electrocardiogram; rather, it helps to identify heart conditions that may lead to complications if left untreated³.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: The myocardium requires a constant supply of oxygen to function properly. Coronary artery disease (CAD) causes a reduction in blood flow due to narrowed or blocked coronary arteries, leading to a lack of oxygen in the heart muscle, which can result in angina or chest pain.
Choice B reason: While increased cardiac workload can exacerbate chest pain, it is not the primary cause of pain in CAD. The pain is primarily due to ischemia, which is the lack of oxygen and nutrients to the heart tissue due to reduced blood flow.
Choice C reason: Interrupted electrical activity can lead to arrhythmias or heart attack, but it is not the direct cause of pain in CAD. The pain is related to ischemia, not electrical disturbances.
Choice D reason: A lack of nutrients, including oxygen, to the heart does contribute to the pain experienced in CAD; however, the primary factor is the insufficient oxygen supply, which is explicitly stated in choice A.
Correct Answer is D
Explanation
Choice A reason: The statement "Your heart stops" is incorrect; heart failure does not mean the heart has stopped functioning.
Choice B reason: "Your heart is pumping too much blood" is not accurate; heart failure often means the heart cannot pump enough blood to meet the body's needs.
Choice C reason: While an area of heart muscle may die during a heart attack, this is not the defining characteristic of heart failure.
Choice D reason: The most accurate description of heart failure is that the heart is not pumping efficiently, which can lead to symptoms like fatigue and shortness of breath.
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