Time	Events
1 month earlier	The patient was admitted to another hospital due to acute heart failure secondary to severe aortic stenosis. Her symptom was improved by oxygen and diuretics, then discharged.
2 weeks earlier	She was referred to our hospital in consideration of transcatheter aortic valve implantation (TAVI).
4 days earlier	Admission to our hospital.
Day 0	TAVI was performed. Haemodynamics collapsed after implantation of Evolut PRO. Severe left ventricular outflow tract obstruction attributable to systolic anterior motion of the mitral valve was observed. Temporary pacing from the right ventricle apex was effective.
Day 1	The patient experienced cardiopulmonary arrest due to self-removal of the temporary pacemaker because of delirium. A temporary pacing lead was inserted again, and return of spontaneous circulation was achieved 40 min from onset.
Day 7	Extubation
Day 12	A dual-chamber pacemaker was implanted.
Day 34	The patient was discharged to a rehabilitation hospital due to post-resuscitation encephalopathy.
9 months later	The patient was alive without cardiac symptom although she was in the nursing home because of the progression of cognitive decline and frailty.