@article{oai:jichi-ir.repo.nii.ac.jp:00000602,
 author = {Kaminishi, Yuichiro and Aizawa, Kei and Morita, Hideki and Sakano, Yasuhito and Oki, Shin-ichi and Saito, Tsutomu and Konishi, Hiroaki and Misawa, Yoshio},
 journal = {自治医科大学紀要, Jichi Medical University Journal},
 month = {Mar},
 note = {Background
 Clinical results of ATS prosthetic heart valve use in Japan have not been fully investi-gated. We analyzed the mid-term results of its use in a single center.
Methods
 Among 88 patients, mean age 61.1±9.9 years, 32 had aortic valve replacement（AVR）, 42 mitral valve replacement（MVR）, and 14 both aortic and mitral valve replacement（DVR）. Mean follow-up was 2.5±1.5 years with a cumulative follow-up of 224.2 patientyears.
Results
 There were 3 early deaths（ 3.4%: all in the MVR group） and 7 late deaths（ 1.8±1.7 %/patient-year: 3 valve related and 4 valve unrelated）. Survival at 5 years was 96.8±17.8 % in the AVR group, 82.2±37.7 % in the MVR group, and 85.7±33.9 % in the DVR group. The linearized incidences of embolism （3）, bleeding events （2）, prosthetic valve endocarditis（3）, hemolysis（1） and re-operation（1） in all patients were 1.3±1.5 %, 1.9±1.9 %, 0.2±0.6 %, 2.1±1.8 % and 0.1±0.6 %/patient-year, respectively. No other complications were observed.
Conclusion
 The ATS prosthetic heart valve showed excellent mid-term clinical results, with a low incidence of valve-related complications.},
 pages = {51--61},
 title = {The ATS bileaflet prosthetic heart valve: mid-term results from a single center},
 volume = {32},
 year = {2010}
}