Kyushu University · Medicine
Professor Koichi Morisaki's research lab specializes in vascular surgery and endovascular interventions, with a strong focus on peripheral arterial disease, critical limb ischemia, and aneurysm management. The lab investigates preoperative risk factors, frailty assessment, and long-term outcomes following revascularization and aneurysm repair, particularly in elderly and high-risk patients. Key research directions include optimizing treatment strategies through validated frailty indices, evaluating survival predictors, and identifying factors associated with complications such as wound issues and endoleak persistence after endovascular aneurysm repair.
Figures are computed from collected data and may differ slightly.
Purpose Risk factors for wound complications or 30-day mortality after major amputation in patients with peripheral arterial disease remain unclear. We investigated the outcomes of major amputation in patients with peripheral arterial disease. Methods Patients who underwent major amputation from 2008 to 2015 were retrospectively analyzed. The main outcome measures were risk factors for wound complications and 30-day mortality after major lower limb amputations. Major amputation was defined as ab
We report two cases of persistent sciatic artery (PSA) aneurysm with limb ischemia. Physicians who treat peripheral artery disease should be aware that PSA is a very rare congenital malformation of the lower extremities that is potentially hazardous, and that revascularization should be performed when a PSA aneurysm is treated.
Objectives CLI Frailty is a useful diagnostic criterion of frailty in patients with critical limb ischemia (CLI). It is important to evaluate not only comorbidities but also frailty in decision making to select the type of treatment for CLI patients. The purposes of our study were to externally validate the CLI Frailty Index and to evaluate the modified CLI Frailty Index by measurement of skeletal muscle mass using computed tomography. Methods Patients who underwent preoperative computed tomogra
Purposes The aim of this study was to evaluate the risk factors for the two-year survival after revascularization of critical limb ischemia. Methods Between 2008 and 2012, 142 patients underwent revascularization. A retrospective analysis was performed to measure the risk factor. Results A total 85 patients underwent surgical revascularization, 31 patients underwent endovascular therapy while 26 patients underwent hybrid therapy. By multivariate analysis, the following variables were considered
Endovascular aneurysm repair is less invasive than open repair and useful for treating abdominal aortic aneurysm in octogenarians; however, open repair can be acceptable treatment in the inappropriate case treated by endovascular aneurysm repair.
Purpose The objective of this study was to investigate the preoperatively definable risk factors which predict the aneurysm sac expansion caused by persistent type 2 endoleak after endovascular aneurysm repair. Methods Between 2008 and 2014, retrospective analysis was performed to examine the predictive risk factors for aneurysm sac enlargement caused by persistent type 2 endoleak, which was defined as a continuous endoleak present for more than six months. Aneurysm sac expansion was diagnosed i
The CONUT, PNI, and GNRI scores can predict the 2-year overall survival in patients with CLTI after revascularization. The CONUT and PNI scores were associated with major amputation.
Thigh sarcopenia is a risk factor for two-year overall survival in patients with critical limb ischemia after infrainguinal revascularization.
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