Aims
The distribution of coronary lesions in young patients presenting with acute coronary syndrome (ACS) is not known.
Methods and results
We included 82 consecutive young patients (≤45 years at presentation) with ACS and obstructive coronary artery disease referred from October 2013 until March 2021 to our clinic. Significant coronary lesions (>50%) at each segment during coronary angiography were evaluated. A total of 158 lesions have been evaluated. Multivessel disease was observed in 37% of patients. Lesions at proximal and mid left anterior descending (LAD) coronary artery were the most common observation (Figure A). Roughly one in three lesions affected a proximal coronary segment (i.e. segment 1, 5, 6, or 11), and 45.1% of patients presented at least one lesion in these segments. Within each segment, lesions affected the ostium in 15.8%, proximal third in 26.8%, mid-third in 32.9%, and distal-third in 15.9% of cases. Among those presenting with ST-segment elevated myocardial infarction, culprit lesion distribution is presented in Figure B. Proximal segments were affected in 33.9%, while culprit lesion of the LAD, left circumflex, and right coronary artery was observed in 51.8%, 16.1%, and 32.1% respectively.
Conclusions
In conclusion, coronary artery disease in patients presenting with ACS occur more often in the LAD and in proximal coronary segments. A significant lesion in a proximal coronary segment affected roughly half of young patients presenting with ACS.
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