Non-occlusive mesenteric ischemia accompanied by aortic regurgitation after transcatheter aortic valve implantation.

An 81-year-old male with severe symptomatic aortic stenosis with ventricular tachycardia was referred for treatment. Balloon aortic valvuloplasty was performed under cardiopulmonary resuscitation. Though transcatheter aortic valve implantation (TAVI) was considered high risk for annulus rupture and aortic regurgitation due to annular calcification, TAVI was performed because of extremely high surgical risk. Moderate-to-severe aortic regurgitation (AR) remained and progression of acidosis could not be managed with continuous hemodiafiltration. His autopsy revealed the development of non-occlusive mesenteric ischemia (NOMI) as the cause of progressive acidosis. AR and hemodynamic instability might contribute to the development and progression of NOMI after TAVI.