COVID-19 vaccine, myocardial infarction and Kounis syndrome.

Abstract

We would like to share ideas on ‘Kounis syndrome must be con-sidered in the differential diagnosis of myocardial infarction following COVID-19 vaccination’. 1 Allam et al. 1 concluded that ‘We want to emphasize that allergic reactions following COVID-19 vaccination can cause cardiac injury. There are multiple reported cases of acute myocardial infarction occurring within minutes to hours after’. The myocardial infarction following COVID-19 vaccination is an important clinical concern at pre-sent. There are many proposed underlying mechanisms for myocardial infarction. Adding to the Kounis syndrome, the infarction might also be due to the increased blood viscosity after the COVID-19 vaccination. 2,3 A patient might also have an underlying disease that might be triggered for further develop-ment of cardiovascular problems when there is an excessive change of blood viscosity after COBVID-19 vaccination. 4 Finally, the myocardial infarction in a COVID-19 vaccine recipient might also be due to other concurrent medical problems. The case of myocardial problem during waiting for COVID-19 vaccination is the best example. 5 We would like to emphasize that while the COVID-19 vaccine might induce a cardiac problem, the vaccine is not the only possible cause of cardiac infarction observed after vaccination. Conflict of interest . None declared.