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Published on: February 3, 2021
Noninvasive testing in coronary artery disease. Selection of procedures and interpretation of results
Insights
Empirical guidelines aid decisions for acute chest pain diagnosis and coronary care unit management. Serum creatine kinase MB fraction is key for suspected infarction with non-diagnostic ECGs.
Area of Science:
- Cardiology
- Diagnostic Medicine
Background:
- Critical decisions in acute and chronic chest pain management require effective diagnostic strategies.
- Current empirical guidelines assist in test selection and patient disposition.
Purpose of the Study:
- To outline useful empirical guidelines for diagnosing chest pain.
- To differentiate diagnostic test selection based on patient presentation and pain characteristics.
Main Methods:
- Review of empirical guidelines for chest pain evaluation.
- Analysis of diagnostic test utility in acute and chronic chest pain scenarios.
- Consideration of patient factors like gender and pain character in test selection.
Main Results:
- Serum creatine kinase MB fraction is valuable for hospitalized patients with suspected infarction and nondiagnostic ECGs.
- Myocardial scintiscan shows greater accuracy than exercise ECG in women and men with nonanginal chest pain.
- For men with typical angina, coronary artery disease is highly probable, often negating the need for diagnostic tests.
Conclusions:
- Diagnostic test selection for chest pain should be guided by patient history, pain characteristics, and gender.
- Specific biomarkers and imaging techniques offer differential diagnostic value.
- In many cases, particularly typical angina in men, extensive diagnostic testing may be unnecessary.
Abstract:
In patients with acute chest pain, selection of diagnostic tests and admission to and discharge from the coronary care unit are critical decisions for which useful empirical guidelines are now available. In hospitalized patients, the serum level of the MB fraction of creatine kinase is particularly useful when the history strongly suggests infarction but the ECG is nondiagnostic. In patients with chronic chest pain, the gender of the patient and the character of the pain are the most important guides to selecting and interpreting exercise tests. In women and in men with nonanginal chest pain, the myocardial scintiscan is preferred to the exercise ECG because of its greater diagnostic accuracy. In men with atypical angina, the two tests are nearly equivalent, and the added cost of the scintiscan is a factor in test selection. Since nearly all men with typical angina have coronary artery disease, diagnostic tests are usually not needed.
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