A 51-year-old male has come to the health clinic for his annual physical exam. After exerting himself by walking from his car to the clinic, he experienced substernal pain, discomfort in his left shoulder, and his jaw.
These symptoms lasted for 2-3 minutes and then subsided with rest.
He mentions that this has been a frequent occurrence over the past few months with similar levels of exertion.
What is the nurse likely to suspect he is experiencing?
Stable angina.
Prinzmetal angina.
Myocardial infarction (MI).
Unstable angina.
The Correct Answer is A
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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Related Questions
Correct Answer is B
Explanation
Chronic stable angina, also known as angina pectoris, is a type of chest pain that occurs when the heart muscle doesn’t get enough oxygen. It is often triggered by physical activity or emotional stress and is usually relieved by rest or medication such as nitroglycerin. Therefore, a patient statement that the pain goes away after taking a nitroglycerin tablet would help confirm a previous diagnosis of chronic stable angina.
Correct Answer is D
Explanation
Choice A rationale
Increasing glomerular filtration would result in increased urine output, not decreased venous return. This action is not directly related to the therapeutic action of nitroglycerin.
Choice B rationale
While enhancing the contractility of the myocardium would increase oxygen delivery, this is not the primary action of nitroglycerin. Nitroglycerin primarily works by dilating the blood vessels, which reduces the amount of work the heart has to do and increases the blood supply to the heart muscle.
Choice C rationale
Nitroglycerin does not produce an immediate analgesic effect. While it can relieve chest pain, it does so by increasing blood flow to the heart, not by acting as an analgesic.
Choice D rationale
Nitroglycerin increases the coronary blood supply and decreases the afterload314. By dilating the blood vessels, nitroglycerin reduces the amount of work the heart has to do and increases the blood supply to the heart muscle. This is the primary therapeutic action of nitroglycerin in alleviating chest pain.
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