# Multicenter Prospective Study of Low-Flow Low-Gradient Aortic Stenosis (TOPAS Study)

> **NCT01835028** · — · UNKNOWN · sponsor: **Laval University** · enrollment: 320 (estimated)

## Conditions studied

- Aortic Valve Stenosis

## Interventions

- **OTHER:** Echocardiography
- **OTHER:** Computed tomography
- **OTHER:** Magnetic resonance imaging
- **OTHER:** Blood biomarkers
- **OTHER:** Stress echocardiography

## Key facts

- **NCT ID:** NCT01835028
- **Lead sponsor:** Laval University
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** UNKNOWN
- **Start date:** 2002-06
- **Primary completion:** 2024-01
- **Final completion:** 2024-01
- **Target enrollment:** 320 (ESTIMATED)
- **Last updated:** 2021-09-21

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01835028

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01835028, "Multicenter Prospective Study of Low-Flow Low-Gradient Aortic Stenosis (TOPAS Study)". Retrieved via AI Analytics 2026-06-24 from https://api.ai-analytics.org/clinical/NCT01835028. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*