Acute Left Circumflex Coronary Artery Occlusion　― Diagnostic Problems of Initial Electrocardiographic Changes ―

Abstract

Patient SelectionThis study consecutively enrolled 1,269 patients with ACS who underwent emergency coronary angiography, in which a thrombotic occlusion was evident and a culprit lesion could be identified, between January 2015 and December 2019. Of the 1,269 patients with ACS, 1,131 with culprit lesions of the right coronary artery, the left anterior descending coronary artery, and/or the left main trunk were excluded. Thus, 138 patients with a culprit lesion of the LCX were entered into the study (Figure 1). A retrospective chart review was performed to assess clinical variables and outcomes, including baseline clinical characteristics, ECG findings at the time of admission, blood tests, angiographic features, door-to-balloon (DTB) time, and in-hospital and short-term (up to 1 year) outcomes.

Pattern of Coronary Artery Disease and Frequency of Left Circumflex Artery as a Culprit in Patients of Non-ST Elevation Acute Coronary Syndrome with a Normal Electrocardiogram

“…19 Due to the lack of considerable ST-T changes on the 12-lead standard electrocardiograms; (LCX) blockage is frequently classified as NSTE-ACS. 20 Setianto et al reported that around 30% of patients with total occlusion in LCx present with no significant ST-T changes or STsegment elevation on ECG recording. 21 Khan et al 22 found that Left Circumflex (LCx) accounted for 33% of patients with an initial NSTE-ACS diagnosis.…”