A 58-year-old man presents to you complaining of chest pain. The pain occurs when he walks to the corner shop on his lunch break and disappears within a couple of minutes when he stops to rest. He has never had pain at rest or pain that did not spontaneously remit.Clinical examination is normal except for mildly elevated blood pressure at 145/85. An ECG shows normal sinus rhythm. What is the most appropriate investigation?
A 58-year-old man presents to you complaining of chest pain. The pain occurs when he walks to the corner shop on his lunch break and disappears within a couple of minutes when he stops to rest. He has never had pain at rest or pain that did not spontaneously remit.Clinical examination is normal except for mildly elevated blood pressure at 145/85. An ECG shows normal sinus rhythm. What is the most appropriate investigation?
💡 Explanation
**Core Concept:** Angina pectoris is a clinical syndrome characterized by chest pain triggered by exertion and relieved by rest. It can be caused by coronary artery disease leading to reduced blood flow to the heart muscles.
**Why the Correct Answer is Right:** The correct answer (D) is treadmill stress test (TMT) or exercise stress test. This test is appropriate to evaluate the patient's symptoms and determine if they are caused by reduced blood flow due to coronary artery disease. By performing a TMT, we can assess the patient's response to exercise and observe if the symptoms occur, persist, or worsen during exercise and resolve upon rest.
**Why Each Wrong Option is Incorrect:**
A. Echocardiography is a test used to evaluate the heart's structure and function, not to determine the cause of chest pain. While it may show abnormalities in the heart's structure, it does not sufficiently evaluate the patient's response to exercise or stress, which is crucial in diagnosing angina.
B. Electrocardiography (ECG) monitors the heart's electrical activity and can detect abnormalities in heart rhythms. However, it does not help in assessing the patient's response to exercise or stress, which is essential in diagnosing angina.
C. Blood tests, such as troponin levels, can assess cardiac injury, but they do not evaluate the patient's response to exercise or stress. Blood tests are useful in ruling out specific causes of chest pain but do not directly diagnose angina.
**Clinical Pearl:** Angina pectoris is a valuable clinical entity to understand, as it is a common and treatable cause of chest pain in adults. Treatment options include medications such as nitrates, which are effective in relieving angina symptoms and improving exercise tolerance.
**Correct Answer Explanation:** In this scenario, performing a TMT allows for the assessment of angina symptoms during exercise or stress, which is crucial in diagnosing angina pectoris. A negative result from a TMT would rule out angina as a cause of the patient's chest pain, while a positive result would indicate the need for further evaluation and potential management.
✓ Correct Answer: D. CT coronary angiography
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