During a stress test on a treadmill, which observation by the nurse would necessitate immediate action?
Sinus tachycardia at a rate of 110 beats/min.
Blood pressure increase from 134/68 to 150/80 mm Hg.
The patient reports feeling tired.
Inversion of T waves on the electrocardiogram.
The Correct Answer is D
Choice A rationale
Sinus tachycardia at a rate of 110 beats/min is a normal response to exercise. During a stress test, the heart rate will naturally increase as the body’s demand for oxygen increases. A heart rate of 110 beats/min is within the expected range during moderate exercise.
Choice B rationale
An increase in blood pressure from 134/68 to 150/80 mm Hg is a normal response to exercise. During a stress test, blood pressure will naturally rise as the heart works harder to pump blood to the muscles. This increase is within the expected range during moderate exercise.
Choice C rationale
Feeling tired during a stress test on a treadmill is a normal response to exercise. Fatigue can occur as the body’s energy stores are used up during physical activity. However, if the patient reports extreme fatigue or other symptoms such as chest pain or shortness of breath, it may indicate a problem.
Choice D rationale
Inversion of T waves on the electrocardiogram during a stress test is a sign of myocardial ischemia, a condition in which the heart muscle is not getting enough oxygen. This could indicate the presence of significant coronary artery disease and is a finding that would necessitate immediate action.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale
Atrial Flutter is a type of arrhythmia where the atria beat regularly, but much faster than usual. The treatment for Atrial Flutter is typically medication, not cardioversion.
Choice B rationale
Ventricular Tachycardia is a fast, abnormal heart rate. It starts in your heart’s lower chambers, or ventricles. Ventricular Tachycardia is a serious condition and can be life-threatening. While cardioversion can be used in some cases, it is not the primary treatment.
Choice C rationale
Atrial Fibrillation is when the upper chambers of the heart (atria) beat irregularly. This causes the atria to twitch, leading to an abnormal heart rhythm. The treatment for Atrial Fibrillation is typically medication, not cardioversion.
Choice D rationale
Ventricular Fibrillation is a life-threatening heart rhythm that results in a rapid, erratic heartbeat. During Ventricular Fibrillation, the heart quivers and can’t pump any blood, causing cardiac arrest. The treatment for Ventricular Fibrillation is Defibrillation.
Correct Answer is A
Explanation
Choice A rationale
Stable angina typically occurs with exertion and goes away with rest. The symptoms described, including substernal pain, discomfort in the left shoulder and jaw, which subside with rest, are characteristic of stable angina.
Choice B rationale
Prinzmetal angina, also known as variant angina, is a type of angina (chest pain) caused by spasms in the coronary arteries. These spasms occur most often in coronary arteries that have not become hardened due to plaque buildup. However, they can also occur in hardened arteries. The symptoms can be similar to those of stable angina, but the typical triggers for the episodes are different.
Choice C rationale
A myocardial infarction (MI), or heart attack, occurs when one of the coronary arteries becomes blocked, often by a blood clot, causing part of the heart muscle to be damaged or die. The symptoms are usually more severe than what is described and do not typically subside with rest.
Choice D rationale
Unstable angina is a condition in which the angina symptoms become more severe, occur more frequently, or occur at rest. This is a medical emergency as it can often lead to a heart attack.
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