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[A new pharmacological test for diagnosing coronary artery disease (author's transl)]
Insights
The dipyridamole test effectively diagnoses coronary artery disease by inducing anginal pain in most patients. This simple, non-invasive test is as reliable as the exercise electrocardiogram (E.C.G.) stress test.
Area of Science:
- Cardiology
- Diagnostic Medicine
Background:
- Coronary artery disease (CAD) diagnosis relies on invasive and stress-inducing methods.
- Non-invasive diagnostic tools are crucial for patient management and early detection.
Purpose of the Study:
- To evaluate the diagnostic accuracy of the intravenous dipyridamole test for coronary artery disease.
- To compare the dipyridamole test with the exercise electrocardiogram (E.C.G.) test.
Main Methods:
- Intravenous injection of dipyridamole (0.5 mg/kg) over ten minutes in 45 CAD patients and 15 controls.
- Monitoring for anginal pain during and after dipyridamole administration.
- Administration of aminophylline to resolve induced angina.
Main Results:
- 40 out of 45 CAD patients experienced anginal pain (positive dipyridamole test).
- Three CAD patients had a questionable positive test; two had a false-negative result.
- No control patients without CAD experienced anginal pain.
Conclusions:
- The intravenous dipyridamole test is a simple and well-tolerated diagnostic tool for coronary artery disease.
- The dipyridamole test demonstrates diagnostic equivalence to the exercise E.C.G. test.
- This test offers a valuable, less stressful alternative for CAD diagnosis.
Abstract:
In 45 patients with coronary artery disease, proven by coronary arteriography, and 15 patients without such disease 0.5 mg dipyridamole (Persantin) per kg body weight was injected i.v. over ten minutes. In 40 of the 45 patients with coronary artery disease anginal pain occurred during or immediately after dipyridamole injection and ceased immediately after intravenous administration of 0.24 g aminophylline (positive test), while in three it had stopped spontaneously without aminophylline (questionable positive test). Only in two of the 45 patients with confirmed coronary artery disease was there no anginal pain (false-negative result). None of the 15 patients without coronary artery disease had anginal pain during the test. It is concluded from these results that the "dipyridamole test", which is simple to perform and does not stress the patient significantly, is at least equivalent diagnostically to the exercise E.C.G. test.