{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T12:20:04Z","timestamp":1790857204434,"version":"4.1.0"},"reference-count":30,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2009,2,3]],"date-time":"2009-02-03T00:00:00Z","timestamp":1233619200000},"content-version":"vor","delay-in-days":3596,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Clinical Cardiology"],"published-print":{"date-parts":[[1999,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Background: Platelet aggregation and secondary vasoconstriction are key events in the genesis of acute coronary syndromes.<\/jats:p><jats:p>Hypothesis: Since nitrates have vasodilatory and antiaggregant effects, treatment with long\u2010acting nitrates at the time of onset of acute coronary syndromes could be associated with attenuation of their severity.<\/jats:p><jats:p>Methods: A consecutive series of 533 patients with acute coronary syndrome and past history of coronary artery disease admitted to the Cardiology Service of a general hospital was studied. A specific questionnaire assessed the use of nitrates and other relevant drugs, as well as other clinical variables. The diagnosis of unstable angina or acute myocardial infarction (MI) was established according to clinical, electrocardiographic, and enzymatic criteria.<\/jats:p><jats:p>Results: In the whole cohort, 169 patients had MI and 364 had unstable angina. Previous use of long\u2010acting nitrates was significantly more common in patients with unstable angina (56%) than in those with MI (37%) (p&lt;0.0001). Multivariate analysis identified being a nonsmoker [odds ratio: 95%, confidence limits (CL) 0.37, 0.23\u20130.59], previous unstable angina (CL 0.62, 0.41\u20130.92), use of aspirin (CL 0.58, 0.41\u20130.92), and use of long\u2010acting nitrates (CL 0.61, 0.40\u20130.93) as the independent predictors of the development of unstable angina rather than MI; of these the combination of nitrates and aspirin was the strongest predictor.<\/jats:p><jats:p>Conclusions: Long\u2010acting nitrates as well as aspirin are suggested to have a protective or modifying effect on the development of acute coronary syndromes, favoring unstable angina rather than acute MI.<\/jats:p>","DOI":"10.1002\/clc.4960220410","type":"journal-article","created":{"date-parts":[[2009,2,4]],"date-time":"2009-02-04T03:20:04Z","timestamp":1233717604000},"page":"303-308","source":"Crossref","is-referenced-by-count":8,"title":["Attenuated severity of new acute ischemic events in patients with previous coronary heart disease 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