Cerebral Lesion and Neurocognitive Status Changes After TAVR

Cerebral Lesion and Neurocognitive Status Changes After Transcatheter Aortic Valve Replacement：A Prospective Multicenter Observational Cohort Study.

Status

UNKNOWN

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT04678934

Acronym

CLEVER-TAVR

Enrollment

200

Registered

2020-12-22

Start date

2021-01-01

Completion date

2022-12-31

Last updated

2020-12-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Aortic Stenosis

Brief summary

The CLEVER-TAVR cohort (Cerebral Lesion and Neurocognitive Status Changes after Transcatheter Aortic Valve Replacement) is a multicenter observational cohort study. The investigators will screen consecutive patients ≥65 years of age before TAVR and enroll those that complete the procedure successfully. The investigators will assess the neurocognitive function using multiple tests with Reliable Change Index before TAVR and 7, 30, 90, 180 and 360 days after TAVR. The primary endpoint will be major adverse cardiovascular and cerebral events(MACCE, defined according to the Valve Academic Research Consortium-2 data dictionary) at 1 year.

Detailed description

Study Design The CLEVER-TAVR cohort (Cerebral Lesion and Neurocognitive Status Changes after Transcatheter Aortic Valve Replacement) is a multicenter prospective observational study. Patients with aortic stenosis who successfully undergo TAVR procedure from January 2021 to December 2021 will be enrolled in this study according to the inclusion criteria. Preoperative cognitive function, DW-MRI evaluation and baseline data will be recorded. All patients should be followed up for 1 year, including telephone follow-up once a month to record the main end-point events, and clinic follow-up at 30, 90, 180, 360 days after TAVR. Laboratory examination, electrocardiogram, color Doppler ultrasound and other examinations will be collected and recorded. The changes of cognitive function and brain imaging (DW-MRI) will be evaluated before discharge(7 days), 30, 90, 180, 360 days after procedure. The primary endpoint will be major adverse cardiovascular and cerebral events(MACCE), including all-cause death, stroke, acute kidney injury, myocardial infarction, bleeding complications, vascular complications, permanent pacemaker implantation, conduction block and arrhythmia, valve related complications. The postoperative valve function, life quality and other complications related to TAVR will also be recorded.

Interventions

PROCEDURETAVR

Transcatheter aortic valve replacement

Study design

Observational model

COHORT

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

65 Years to No maximum

Healthy volunteers

Yes

Inclusion criteria

* Patients voluntarily participated and signed informed consent; * Patients with severe aortic stenosis undergo TAVR after assessment by the Heart Team; \[Definition of severe aortic stenosis: mean aortic pressure gradient (MPG) ≥ 40 mmHg, aortic valve area (AVA) ≤ 1.0 cm2 and maximal aortic velocity (Vmax) ≥ 4 m / s.\] ③ Age ≥ 65 years old.

Exclusion criteria

* Emergency procedure; * Severe cognitive impairment (MMSE \< 15), or years of education \< 6 years; * Unstable condition (intractable angina pectoris, acute heart failure) or patients can not complete MRI examination or cognitive assessment; * TAVR operation failed or transferred to surgery for SAVR due to serious complications; ⑤ Speech disorders, or mental disorders, or severe physical disorders (MRS ≥ 3); ⑥ Patients with complicated congenital heart disease, HCM, surgery valve replacement or combined valvular disease; ⑦ Patients with life expectancy less than 12 months.

Design outcomes

Primary

Measure	Time frame	Description
major adverse cardiovascular and cerebral events	1 year.	Defined as VARC-2, major adverse cardiovascular and cerebral events(MACCE), including all-cause death, stroke, acute kidney injury, myocardial infarction, bleeding complications, vascular complications, permanent pacemaker implantation, conduction block and arrhythmia, valve related complications.

Secondary

Measure	Time frame	Description
Cognitive Decline.	1 year.	Cognitive Decline is defined as Mini-mental State Examination(MMSE) score decreased by more than 3 points. The MMSE is a 30-point test, the lower the score, the worse the severity (24-30: No cognitive impairment, 18-23: mild Cognitive impairment, 0-17: severe cognitive impairment).

Countries

China

Contacts

Primary ContactShenghua Zhou

zhoushenghua@csu.edu.cn+8673185292012

Backup ContactZhenfei Fang

fangzhenfei@csu.edu.cn+8613308487909

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026