The clinical profile of acute myocardial infarction (AMI) patients reflects the burden of risk factors in the general population. Differences between incident (first) and recurrent (repeated) events ...and their impact on treatment are poorly described. We studied potential differences in the clinical profile and in-hospital treatment between patients hospitalised with an incident and recurrent AMI.
A total of 324 patients admitted in the Coronary Care Unit of 'Mother Teresa' hospital, Tirana, Albania (2013-2014), were included in the study. Information on AMI type, complications and risk factors was obtained from patient's medical file. Logistic regression analyses were used to explore differences between the incident and recurrent AMIs regarding clinical profile and in-hospital treatment.
Of all patients, 50 (15.4%) had a prior AMI. Compared to incident cases, recurrent cases were older (P=0.01), more often women (P=0.01), less educated (P=0.01), and smoked less (P=0.03). Recurrent cases experienced more often heart failure (HF) (OR=2.48; 95% CI: 1.31-4.70), impaired left ventricular ejection fraction (OR=1.97; 95% CI:1.05-3.71), and multivessel disease (OR=6.32; 95% CI: 1.43-28.03) than incident cases. In-hospital use of beta-blockers was less frequent among recurrent compared to incident cases (OR=0.45; 95% CI: 0.24-0.85), while no statistically significant differences between groups were observed regarding angiotensin-converting enzyme inhibitor/angiotensin receptor blocker, statin, aspirin or invasive procedures.
A more severe clinical expression of the disease and underutilisation of treatment among recurrent AMIs are likely to explain their poorer prognosis compared to incident AMIs.
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