Consecutive patients who underwent PCI at Chang Gung Memorial Hospital, LinKou, Taiwan, between January 2010 and December 2017 were screened retrospectively for eligibility. We identified cases from the medical records with at least one long coronary lesion treated with one or multiple overlapping second-generation DESs with a total stent length of ≥38 mm. We excluded patients presenting with ST-segment elevation myocardial infarction (STEMI) or cardiogenic shock. The included patients with dsDMax ≤ 2.0 mm based on the quantitative coronary analysis were categorized into the extremely small distal vessel (ESDV) group, and the remaining patients were assigned to the non-ESDV group (dsDMax > 2.0 mm). Patients with simultaneous long lesions of dsDMax ≤ 2.0 and dsDMax > 2.0 mm in different vessels were categorized into the ESDV group. The baseline characteristics, risk factors for atherosclerotic cardiovascular disease, comorbidities, and medications of the included patients were obtained from the electronic medical records.
The study was approved by the Institutional Review Board of Chang Gung Memorial Hospital. All the patients underwent standard medical management. The requirement for written consent from patients was waived owing to the retrospective nature of this study.
The study was approved by the Institutional Review Board of Chang Gung Memorial Hospital. All the patients underwent standard medical management. The requirement for written consent from patients was waived owing to the retrospective nature of this study.
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