Ignite Creation Date:
2025-12-24 @ 11:45 PM
Ignite Modification Date:
2026-01-04 @ 8:35 AM
Study NCT ID:
NCT00805051
Status:
COMPLETED
Last Update Posted:
2011-09-30
First Post:
2008-12-08
Is Gene Therapy:
True
Has Adverse Events:
False
Brief Title:
Acquired Von Willebrand Syndrome in Severe Aortic Stenosis
Sponsor:
University Hospital, Basel, Switzerland
Organization:
Study Overview
Official Title:
Does an Acquired Von Willebrand Syndrome Influence Perioperative Blood Loss in Patients With Severe Aortic Stenosis Undergoing Aortic Valve Replacement?
Status:
COMPLETED
Status Verified Date:
2011-09
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
Patients with severe aortic stenosis often suffer from an acquired Von Willebrand syndrome by degeneration of the polymers during passage through the narrow valve leading to turbulences. We hypothesized that the diagnosis of acquired von Willebrand syndrome influence perioperative blood loss in patients undergoing open cardiac valve replacement.
Detailed Description:
Patients with severe aortic stenosis often suffer from an acquired Von Willebrand syndrome by degeneration of the polymers during passage through the narrow valve leading to turbulences. After written consent and an extended anamnesis of existing coagulopathy, we take three blood samples in these patients: before surgery, on the day after surgery and 4 weeks after surgery. We determine von Willebrand factor in lab and by a point-of-care platelet function analyzer (Multiplate TM). We measure amount of mediastinal drainage after 24 hours and blood product consumption in these patients.
Study Oversight
Has Oversight DMC:
False
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?: