Calculation of left ventricular relaxation time constant-Tau in patients with mitral/aortic regurgitation by continuous-wave Doppler

Status

Active, not recruiting

Phases

Phase 1

Study type

Observational

Source

ChiCTR

Registry ID

ChiCTR-DDT-12002969

Enrollment

Unknown

Registered

2012-12-18

Start date

2013-01-16

Completion date

Unknown

Last updated

2017-04-18

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

Conditions

left ventricular diastolic function

Interventions

Gold Standard:

Index test:

Eligibility

Sex/Gender

All

Age

30 Years to 80 Years

Inclusion criteria

Inclusion criteria: patients who are going to undertake cardiac catheterization with mild or moderate mitral/aortic regurgitation,left ventricular ejection fraction >50% and agreement to sign the informed consent.

Exclusion criteria

Exclusion criteria: patients with no or severe or eccentric aortic/mitral regurgitation,and unwillingness to receive the relevant operations.

Design outcomes

Primary

Measure	Time frame
cleft ventricular relaxation time constant-Tau;	—

Countries

China

Contacts

Public ContactWen Chaoyang,Xu Yong

wency301@vip.sina.com+86 13910609922,13701141929

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026