Multi Center Registry of Transcatheter Aortic Valve Replacement in Northeast China

"1. Subjects with severe aortic valve stenosis~2. Subjects who plan (or have) to use the transcatheter aortic valve replacement system for percutaneous aortic valve replacement~3. The patients agreed to join the study, voluntarily signed the informed consent and completed the follow-up;~4. Be able to contact the subjects or their legal guardians / relatives;~5. The medical record records the subjects who have died and can't get any contact information of the subjects（ (for dead cases only)~Sign the informed consent form, then check the inclusion and exclusion criteria, register after meeting the criteria, obtain the registration number, perform aortic valve replacement surgery, follow-up 24 hours, discharge, 30 days, 1 year, 2 years, 3 years, 4 years and 5 years after operation according to the test requirements, and carry out relevant follow-up according to the scheme requirements to collect data"