A Pilot Study of Thrombin Generation Changes in Neonates Undergoing Placement of a Blalock-Taussig Shunt
The primary goal of this investigation is to describe perioperative thrombin generation in neonates undergoing placement of a Blalock-Taussig (BT) shunt to better understand the coagulation changes that precipitate postoperative shunt occlusion.
|Study Design:||Observational Model: Case-Only
Time Perspective: Prospective
|Official Title:||A Pilot Study of Thrombin Generation Changes in Neonates Undergoing Placement of a Blalock-Taussig Shunt|
- Thrombin generation - peak amount [ Time Frame: 2 years ] [ Designated as safety issue: No ]The thrombin generating capacity of plasma is measured using a fluorogenic substrate. Coagulation is initiated by contact activation and thrombin generation is monitored by a microplate fluorometer set that displays the progression of the fluorescence reaction. The peak amount of thrombin generated is expressed by absorbancy (nM).
- Thrombin Generation Curve validation in neonates [ Time Frame: 2 years ] [ Designated as safety issue: No ]The peak amount of thrombin generated as determined by the thrombin generation curve will be compared to the peak amount of thrombin generated as determined by the thromboelastogram. Both measure thrombin generation by absorbancy (nM).
Biospecimen Retention: Samples Without DNA
Serum samples only
|Study Start Date:||January 2010|
|Estimated Study Completion Date:||June 2012|
|Primary Completion Date:||January 2012 (Final data collection date for primary outcome measure)|
To accomplish our goal, the investigators will measure preoperative levels of one major procoagulant (prothrombin) and one major anticoagulant (Antithrombin). The investigators will also measure preoperative and postoperative thrombelastograms (TEG) and preoperative and postoperative thrombin generation curves (TGC).
|United States, Georgia|
|Children's Healthcare of Atlanta at Egleston|
|Atlanta, Georgia, United States, 30322|