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Effects of Door-to-Balloon Times on Outcomes in Taiwanese Patients Receiving Primary Percutaneous Coronary Intervention: A Report of Taiwan Acute Coronary Syndrome Full Spectrum Registry

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Purpose: The impact of door-to-balloon (DTB) time on patient outcomes is unclear in a Taiwanese population receiving primary percutaneous coronary intervention (PCI). The study aimed to investigate the relationship between stratified DTB times and outcomes through analysis of the database from the Taiwan acute coronary syndrome full spectrum registry. Methods: Relevant data were collected from case report forms of patients receiving primary PCI who were categorized as group 1, 2, 3, and 4 according to the DTB time < 45, 45-90, 91-135, and > 135 minutes, respectively. The differences were analyzed by using ANOVA and Kaplan-Meier analyses. Results: There were significant variations in DTB times at baseline, which included patients salvaged at centers, patients with prior cardiovascular disease, and those patients with different coronary artery flows (p < 0.01) separated into 4 groups (n = 189, 443, 299, and 401, respectively). The in-hospital adverse event rates were identical among the 4 groups except for a higher rate of acute renal failure and a longer hospital stay observed in group 4 (p < 0.01). The results showed no decrease in the incidences of repeated revascularization, major adverse cardiac event, or cardiovascular composite at 1 year in group 1. Conclusions: This study suggested that the DTB time is not a good determinant for outcomes in Taiwanese patients receiving primary PCI.

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