Current Status of Cardiovascular Surgery in Japan:A Report Based on the Japan Cardiovascular Surgery Database in 2017, 2018. 4. Thoracic Aortic Surgery

Hideyuki Shimizu＊1	Norimichi Hirahara2	Noboru Motomura3
Hiroaki Miyata2	Shinichi Takamoto2

（Department of Cardiovascular Surgery, School of Medicine, Keio University1, Tokyo, Japan, Department of Health Policy and Management, School of Medicine, Keio University2, Tokyo, Japan, and Department of Cardiovascular Surgery, Toho University Sakura Medical Center3, Sakura, Japan）

Purpose:The current status of treatment for thoracic/thoracoabdominal aortic diseases in Japan was analyzed. Methods:Using the Japan Cardiovascular Surgery Database（JCVSD), the number of cases, operative mortality and major morbidities（stroke, renal failure, pneumonia, paraplegia）of thoracic and thoracoabdominal aortic surgery in 2017 and 2018 were analyzed by surgical site（root-ascending, arch, descending, thoracoabdominal aorta), surgical procedure and age group. Results:The total number of cases was approximately 40,000 and aortic dissection and non-dissection were almost the same. The number of cases was highest in the 70s, and in the elderly, the rates of root replacement（particularly valve-sparing operation）in the root-ascending aorta and open-chest surgery（prosthetic graft replacement, OAR;open stent graft, Open SG）in the arch, descending and thoracoabdominal aorta were lower. The outcome by procedure showed the lowest mortality and morbidity rate of valve-sparing in the root-ascending region, and lower mortality and morbidity（cerebral infarction, renal failure, and pneumonia）in non-open-chest procedures（TEVAR with/without branch reconstruction）than those in open-chest procedures in the arch, descending and thoracoabdominal regions. Unlike other complications, the incidence of paraplegia in the arch was lower in OAR than in non-open-chest procedures. With regards to age, the operative mortality in patients aged 80 or older was significantly higher than those under 80 for all surgical procedures in the root-ascending, arch and descending regions. Conclusions:Thoracic and thoracoabdominal aortic surgery in Japan was most often performed in elderly patients in their 70s with an overall good mortality rate of 5.3%. Mortality and postoperative morbidity in patients aged 80 or older were still high. Further improvement of surgical results is required.

 

Jpn. J. Cardiovasc. Surg. 49:169-179（2020）

Keywords：Japan Cardiovascular Surgery Database（JCVSD）;age;aortic aneurysm;aortic dissection;complication