Incidence and In-Hospital Outcomes of Patients Presenting With Stent Thrombosis (from the Japanese Nationwide Percutaneous Coronary Intervention Registry).

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Clinical presentation of stent thrombosis (ST) and its sequela under contemporary practice have not been fully elucidated largely due to rare incidence of ST. We sought to assess the characteristics in patients with clinical presentation of ST and their in-hospital outcomes, utilizing nationwide registration system for percutaneous coronary interventions (J-PCI). The present study included acute coronary syndrome (ACS) patients undergoing PCI with clinical findings of definite ST from January 2014 to December 2016. Patients' characteristics, in-hospital mortality and its composite with periprocedural complications were evaluated. Full match comparison was performed. During the study period, 256,610 ACS patients (37.9% of total PCI cases) underwent PCI and 1,367 ST patients (1.9%) were identified from 73,241 ACS patients' records who had a history of previous PCI. Overall, patients with ST were younger but had higher incidence of previous myocardial infarction, compared with those without. In addition, ST patients had increased rate of crude in-hospital death (4.8% vs 1.1%, p <0.001). After full match comparison, the incidence of recurrent ST (post-PCI) was significantly higher in ST patients when compared with ACS patients presenting without ST (4.3% vs 0.9%, p <0.001). Despite younger age, patients with ST had significantly higher incidence of in-hospital mortality and cardiovascular complications, including recurrent ST, compared with those without.

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