Over the past 20 years increasing numbers of patients have undergone cardiopulmonary bypass for correction of congenital heart defects and or palliation of single ventricle type anatomy. While technical advances have been made in these surgical procedures, progress has been limited with regard to pharmacologic management of infants during the postoperative period. Although rapid extubation strategies have been applied at many centers in older infants and children, neonates and young infants still demonstrate morbidity after surgery, often resulting in prolonged time on mechanical ventilation. It was reported by the applicant that the recent Triiodothyronine Supplementation in Infants and Children Undergoing Cardiopulmonary Bypass (TRICC) clinical trial demonstrated that triiodothyronine supplementation with Triostat (liothyronine) reduced time on the ventilator after surgical procedures using cardiopulmonary bypass in infants under 5 months of age. However, the study design did not provide data in the format required by the Food and Drug Administration (FDA) for an indication change on the label for this drug. To apply for the labeling change for triiodothyronine (liothyronine) and significantly impact the current standard of care, the investigators aim to prospectively study the specific age groups. In the proposed study the hypothesis that triiodothyronine supplementation after cardiopulmonary bypass (CPB) in infants improves clinical outcome will be tested. This Phase 3, randomized, double-blind, placebo-controlled trial aims to obtain results confirming those of the TRICC trial that triiodothyronine supplementation with Triostat (liothyronine) in infants under 5 months of age reduces time on the ventilator after surgical procedures using cardiopulmonary bypass and confirming that triiodothyronine supplementation is safe in this age group after cardiopulmonary bypass.

Public Health Relevance

We will perform a randomized placebo controlled trial to determine if thyroid hormone supplementation after cardiopulmonary bypass shortens time on the ventilator for infants less than 5 months of age.

Agency
National Institute of Health (NIH)
Institute
Food and Drug Administration (FDA)
Type
Research Project (R01)
Project #
5R01FD004362-04
Application #
9334569
Study Section
Special Emphasis Panel (ZFD1)
Project Start
2014-08-15
Project End
2019-07-31
Budget Start
2017-08-01
Budget End
2019-07-31
Support Year
4
Fiscal Year
2017
Total Cost
Indirect Cost
Name
Seattle Children's Hospital
Department
Type
DUNS #
048682157
City
Seattle
State
WA
Country
United States
Zip Code
98101
Kajimoto, Masaki; Ledee, Dolena R; Isern, Nancy G et al. (2017) Right ventricular metabolism during venoarterial extracorporeal membrane oxygenation in immature swine heart in vivo. Am J Physiol Heart Circ Physiol 312:H721-H727
Priest, James R; Slee, April; Olson, Aaron K et al. (2012) Triiodothyronine supplementation and cytokines during cardiopulmonary bypass in infants and children. J Thorac Cardiovasc Surg 144:938-943.e2