title: Baseline Characterization of Japanese Peripheral Arterial Disease Patients　- Analysis of Surveillance of Cardiovascular Events in Antiplatelet-Treated Arteriosclerosis Obliterans Patients in Japan (SEASON).
abstract: BACKGROUND
  Despite mounting evidence of increased cardiovascular events in patients with peripheral arterial disease (PAD), the overall incidence of cardiovascular events in PAD patients has not been fully clarified in Japan. The prospective Surveillance of cardiovascular Events in Antiplatelet-treated arterioSclerosis Obliterans patients in JapaN (SEASON) is a prospective observational multicenter study and here we report the baseline clinical characteristics, including atherosclerosis risk factor prevalence, in PAD patients treated with antiplatelet agents.
  
  
  RESULTS
  The SEASON registry enrolled 11,375 patients in 1,745 institutions and the data for 10,322 patients were analyzed. At baseline, the average age was 73.8±9.9 years, 60.0% were male and 83.9% were in Fontaine stage I or II. They had arteriosclerosis risk factors, such as current smoking (16.2%), hypertension (61.5%), diabetes mellitus (38.3%) and dyslipidemia (38.8%). There were complications including heart disease (29.7%), cerebrovascular disease (17.1%) and chronic kidney disease (14.3%). A subpopulation analysis revealed that the proportions of patients with risk factors were high in patients with lower ankle-brachial pressure index value.
  
  
  CONCLUSIONS
  The baseline characteristics of the SEASON population demonstrate that real-world PAD patients have cardiovascular risk factors and comorbidities next to definite PAD patients. Further analysis of this database will contribute to understanding the real-world situation of PAD patients receiving antiplatelet therapy in Japan. (Circ J 2016; 80: 712-721).
authors: Department of Cardiovascular Regeneration and Medicine, Research Institute for Radiation Biology and Medicine, Hiroshima University.
authors: Yukihito
authors: Y
authors: Higashi
authors: Tetsuro
authors: T
authors: Miyata
authors: Hiroshi
authors: H
authors: Shigematsu
authors: Hideki
authors: H
authors: Origasa
authors: Masatoshi
authors: M
authors: Fujita
authors: Hiroshi
authors: H
authors: Matsuo
authors: Hiroaki
authors: H
authors: Naritomi
authors: Hiroaki
authors: H
authors: Matsuda
authors: Masahide
authors: M
authors: Nakajima
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001162:Arteriosclerosis Obliterans / Q000097:blood / Q000188:drug therapy / Q000453:epidemiology; D005260:Female; D006801:Humans; D015994:Incidence; D007564:Japan / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D058729:Peripheral Arterial Disease / Q000097:blood / Q000188:drug therapy / Q000453:epidemiology; D010975:Platelet Aggregation Inhibitors / Q000008:administration & dosage*; D012042:Registries; D012307:Risk Factors
chemical_list: D010975:Platelet Aggregation Inhibitors