Coronary artery size based on intravascular ultrasound in Southeast Asia population

Background One of the downsides of percutaneous coronary intervention (PCI) is stent failure which could be related to stent underexpansion. Hence, PCI based on an accurate coronary artery size obtained from intracoronary imaging is tremendously important. Until now, there is no data about all coronary artery dimensions in the Southeast Asian population performed by intravascular ultrasound (IVUS). The coronary artery size of 153 patients with chronic coronary syndrome (CCS) in acute or chronic settings who underwent percutaneous coronary intervention (PCI) with IVUS was examined. The mean artery size and its predictors were analyzed. Results There were 153 patients with 633 coronary artery segments: the mean left main (LM) external elastic membrane (EEM) diameter and cross-sectional area (CSA) were 5.02 +/- 0.43 mm and 19.93 +/- 3.48 mm2, proximal left anterior descending artery (LAD) 4.25 +/- 0.42 mm and 14.34 +/- 2.85 mm2, the mid-LAD 3.86 +/- 0.39 mm and 11.70 +/- 2.24 mm2, the distal LAD 3.32 (2.83-4.30) mm and 8.77(6.23-14.99) mm2, the proximal left circumflex artery (LCX) 3.91 +/- 0.42 mm and 12.07 +/- 2.53 mm2, the distal LCX 3.51 +/- 0.47 mm and 9.90 (5.09-14.20) mm2, the proximal right coronary artery (RCA) 4.50 +/- 0.48 mm and 16.14 +/- 3.43 mm2, the mid-RCA 4.16 +/- 0.420 mm and 13.74 +/- 2.72 mm2, the distal RCA 3.81 +/- 0.41 mm and 11.59 +/- 2.46 mm2, respectively. Body surface area (BSA) is an independent predictor for the majority of epicardial coronary arteries with a positive linear relationship. Conclusions The mean artery size of the Indonesian population was comparable with previous studies. The knowledge of coronary artery size will help the clinician to have a reference for intervention, especially when no intravascular imaging is available.