Key result
Angiographic criteria successfully distinguished 9 cases of Prinzmetal's variant angina spasm from 14 cases of catheter-induced spasm among 2,394 selective coronary angiograms.
Why the study?
Can angiographic criteria distinguish between coronary spasm caused by Prinzmetal's variant angina and catheter-induced spasm?
Population
2,394 selective coronary angiograms, yielding 23 cases of coronary artery spasm.
Comparison
Selective coronary angiography and pharmacologic… vs Prinzmetal's variant angina spasm versus…
Design
Cohort
Authors
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Angiographic criteria may aid differentiation of Prinzmetal from catheter-induced spasm; leaves open need for prospective validation before clinical adoption.
Observational (n=2,394)
Can angiographic criteria distinguish between coronary spasm caused by Prinzmetal's variant angina and catheter-induced spasm?
Specific angiographic features (location, morphology, and associated symptoms) can reliably differentiate catheter-induced coronary spasm from Prinzmetal's variant angina, which is critical to avoid unnecessary surgery for seemingly fixed stenoses.
Friedman et al. (1979) conducted an observational in Coronary artery spasm (n=2,394). Prinzmetal's variant angina vs. Catheter-induced spasm was evaluated on Angiographic characteristics of coronary artery spasm. Angiographic criteria successfully distinguished 9 cases of Prinzmetal's variant angina spasm from 14 cases of catheter-induced spasm among 2,394 selective coronary angiograms.