Feasibility and variability of 2D Speckle Tracking Imaging for measuring left ventricular twist and untwisting on healthy subjects and congenital aortic valve stenosis patients
Recruiting
- Conditions
- Congenital valvular aortic stenosis1001039410007510
- Registration Number
- NL-OMON32426
- Lead Sponsor
- niversitair Medisch Centrum Sint Radboud
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Recruiting
- Sex
- Not specified
- Target Recruitment
- 75
Inclusion Criteria
Age >18 and < 40 years old
Congenital aortic valve stenosis with AVA <1.0 cm2, 1.0-1.5 cm2 or 1.5-2.0 cm2
LVEF >/= 55%
Exclusion Criteria
LVEF < 55%
Non-valvular aortic stenosis
Hypertrophic Obstructive CardioMyopathy
Residual coarctation aorta
Moderate or severe aortic regurgitation
Study & Design
- Study Type
- Observational non invasive
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method <p>Peak systolic twist (degree per cm)<br /><br>Time to peak systolic twist (msec)<br /><br>Peak negative twist velocity (degree per second)<br /><br>Time to peak negative twist velocity (msec)<br /><br>% Untwisting at 20% of diastole (%)</p><br>
- Secondary Outcome Measures
Name Time Method <p>Interobserver variability<br /><br>Intraobserver variability</p><br>