Study Design and Setting
This single-center retrospective cohort study was approved by Vanderbilt
University Medical Center Institutional Review Board (#191843) with
waiver of informed consent and HIPAA authorization. We identified 95
CCVR patients (birth to 12 years) between September 1, 2015 and December
31, 2019. Demographic, surgical, and laboratory data from date of
surgery through 30 days postoperatively were collected. Primary outcome
measures were hematologic and coagulation laboratory parameters:
hematocrit, platelet count, fibrinogen activity, PT, and PTT. Secondary
outcome measures were intraoperative and postoperative calculated blood
loss (CBL).