Re-catheterization in a young patient with acute myocardial infarction: is it preventable?

Coronary artery disease (CAD) is the leading cause of morbidity and mortality worldwide. The goal of our study was to determine the causes of re-catheterization in a young population who were admitted with myocardial infarction and previously underwent cardiac catheterization, and determine what measures can be applied to prevent their re-catheterization. A retrospective study was conducted at Tawam hospital for 6 years (2009-2014). 50 patients between 18 and 50 years of age admitted with acute coronary syndrome who had re-catheterization within a year from their first cardiac catheterization were included. Medical records were reviewed to gather demographic data, cardiac risk factors, laboratory data, hospital course, and angiographic findings. All data was analyzed using descriptive analysis. One third of study participants had been re-admitted electively for a staged PCI, while another third had been admitted and were found to have angina as they did not have significant lesions during re-catheterization; 12 of them had ballooning done while the remaining participants had no intervention. The final third of the participants had re-catheterization due to the development of a new infarction (STEMI/NSTEMI). Of those who had a new infarction, 14% had stent thromboses while 12% had stent restenosis. Stent thrombosis and stent restenosis were found to present as STEMI regardless of the diagnosis at first catheterization. Those with a bare metal stent were found to have a higher risk of ST/ISRS compared to those with a drug-eluting stent (DES). Among the cardiovascular risk factors, we determined that patients who had dyslipidemia (80%) presented the highest risk of having a re-catheterization, followed by those with hypertension or smoking (each 70%). No mortality was documented in the study population. Further research is warranted using accurate statistical analysis and a larger study population to determine the etiology and means of prevention of re-catheterization in the younger population.