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. 2009 Feb 3;20(12):993–998. doi: 10.1002/clc.4960201204

Long‐term prognosis of young patients after myocardial infarction in the thrombolytic era

Jörg‐Uwe Füllhaas 1, Peter Rickenbacher 2,✉, Matthias Pfisterer 3, Rudolf Ritz 4
PMCID: PMC6655724  PMID: 9422836

Abstract

Background: Myocardial infarction (MI) in young adults is a rare event. In the Framingham study, the 10‐year incidence rate of MI per 1,000 was 12.9 in men 30–34 years old. Overall, 4–8% of patients with acute MI are ≤ 40 years old.

Hypothesis: It was the purpose of this study to assess the in‐hospital and long‐term morbidity and mortality in patients ≤40 years old with acute myocardial infarction compared with older patients in the thrombolytic era.

Methods: A consecutive series of 75 patients aged ≤40 years (mean 35.0 ± 4.8) with acute myocardial infarction was compared with an equally sized group of patients aged >40 years (mean 65.1 ± 9.8).

Results: Thrombolysis or direct percutaneous transluminal coronary angioplasty was performed in 52 versus 24% (p = 0.0004) and 5.3 versus 2.7% (p = NS) in younger and older patients, respectively. Significantly fewer young patients had multivessel disease (28 vs. 64%, p < 0.004). No in‐hospital mortality was observed in patients with reperfusion therapy irrespective of age. After a mean followup time of 47 ± 35 months, cardiac mortality was 0 and 11% (p < 0.03), respectively, in young and older patients with, and 3 versus 24% (p < 0.02) without reperfusion therapy, respectively. In addition, significantly fewer patients in the younger age group developed recurrent angina pectoris (12 vs. 39%, p = 0.0004) or congestive heart failure (9 vs. 34%, p = 0.0005) irrespective of reperfusion therapy.

Conclusion: Our observations demonstrate that long‐term prognosis after myocardial infarction in young patients is excellent in the thrombolytic era.

Keywords: myocardial infarction, young age, thrombolysis, coronary angioplasty

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