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[Acute myocardial infarct: the prognostic significance of complex coronary lesions]
A Galrinho1, R Ferreira, L do Rosário
1Serviço de Cardiologia, Hospital de Santa Marta.
Insights
Coronary lesion morphology after acute myocardial infarction (AMI) can help predict patient prognosis. Complex lesions are associated with more cardiac events and angina, aiding in risk stratification beyond traditional factors.
Area of Science:
- Cardiovascular Medicine
- Interventional Cardiology
- Clinical Prognostics
Background:
- Acute myocardial infarction (AMI) poses significant risks for long-term patient outcomes.
- Coronary angiography is routinely performed after AMI to assess disease severity.
- The prognostic value of coronary lesion morphology in AMI patients requires further investigation.
Purpose of the Study:
- To investigate the influence of coronary lesion morphology on the prognosis of patients following AMI.
- To determine if complex coronary lesions predict adverse cardiac events after hospital discharge.
Main Methods:
- Retrospective analysis of 141 patients admitted for AMI, evaluated by coronary angiography 2-3 weeks post-discharge.
- Coronary lesions were classified as complex based on specific morphological characteristics (irregularity, ulcers, etc.).
- Cardiac events, including angina, reinfarction, heart failure, and revascularization, were tracked over a mean follow-up of 21.4 months.
Main Results:
- Patients with complex coronary lesions (Group I, n=64) showed a significantly higher incidence of cardiac events (p=0.006) and angina (p<0.02) compared to those with non-complex lesions (Group II, n=69).
- The overall number of cardiac events was also higher in the complex lesion group (p<0.01).
- No significant differences were observed between groups regarding sex, age, left ventricular function, or the number of diseased vessels.
Conclusions:
- Coronary lesion morphology, assessed 2-3 weeks after AMI, provides valuable prognostic information.
- Complex coronary lesions are associated with increased risk of adverse cardiac events and angina post-AMI.
- Morphological analysis of coronary lesions can enhance risk stratification in AMI patients, complementing assessments of ventricular function and vessel disease extent.
Objective:
The aim of our study was to analyze the possible influence of coronary lesion morphology on the prognosis of patients (pts) with Acute Myocardial Infarction (AMI) evaluated by coronary angiography before hospital discharge.
Design:
Retrospective study.
Setting:
Study performed at the Cardiology Department of a Central Hospital.
Material And Methods:
141 consecutive pts admitted because of AMI were evaluated, with an age average of 53.4 +/- 9.6 years, who had hospital discharge. All pts were submitted to angiography between the 2nd and 3rd week after AMI. The ventriculography was evaluated to determine the ventricular function score, as defined by the CASS protocol. The coronarography was performed to access the number of diseased vessels and to analyze their lesion morphology. Complexity was defined by the presence of one of the following characteristics: irregularity, shoulder, ulcers, filling defects, contrast retention and ecstasy. TWO GROUPS OF PTS WERE CONSIDERED: Group I--n = 64 pts, with complex lesions, and Group II--n = 69 pts with non complex lesions. Seven pts were excluded from the study because they had no significant coronary disease. Mean time of the follow up was 21.4 +/- 8.5 months and was similar in the two groups. The cardiac events considered were angina after AMI; reinfarction; heart failure; new hospital admission, percutaneous transluminal coronary angioplasty; coronary artery bypass grafting and death.
Results:
In relation to both groups no statistically significant difference was found concerning sex, age, left ventricular function score and number of diseased vessels. In group I a higher incidence was found for cardiac events (p 0.006) and for the occurrence of angina after AMI (p < 0.02). In this group the number of pts with cardiac events was also higher (p < 0.01). No difference was found in relation to each of the morphologic characteristics and a high risk profile could not be found.
Conclusions:
Besides left ventricular function and the number of diseased vessels, the analysis of coronary lesion morphology, evaluated 2 to 3 weeks after AMI, could be useful in risk stratification after AMI.