Related Experiment Video
Updated: Mar 16, 2026
Midface Hypoplasia and Cranial Base Morphology in Syndromic Craniosynostosis: A Comparative Analysis Study Using a Predictive Regression Model
Published on: November 4, 2025
Multivariable predictors of substantial blood loss in children undergoing craniosynostosis repair: implications for
Petra M Meier1, David Zurakowski1, Susan M Goobie1
1Department of Anesthesiology, Perioperative and Pain Medicine, Boston Children's Hospital and Harvard Medical School, Boston, MA, USA.
Insights
Thromboelastographic (TEG) parameters and platelet fibrinogen product can predict substantial blood loss during craniosynostosis surgery. Low maximum amplitude (MA) is strongly linked to the need for coagulation products, enabling risk stratification.
Area of Science:
- Neurosurgery
- Anesthesiology
- Hematology
Background:
- Craniosynostosis repair often leads to significant intraoperative blood loss.
- This necessitates transfusions of packed red blood cells (PRBC) and coagulation products.
Purpose of the Study:
- To identify predictors of substantial blood loss and transfusion needs.
- To analyze thromboelastographic (TEG) parameters and platelet fibrinogen product.
Main Methods:
- Prospective study of 120 children undergoing craniosynostosis repair.
- Standardized anesthesia, fluid management, and serial TEG measurements.
- Multivariable logistic regression and ROC curve analysis for predictor identification.
Main Results:
- Forty-four patients required PRBC transfusion (median 26 ml·kg⁻¹).
- TEG parameters (α-angle, MA, K-time) and platelet fibrinogen product predicted blood loss.
- Low maximum amplitude (MA) was the sole independent predictor of coagulation product use.
Conclusions:
- TEG parameters and platelet fibrinogen product can assess blood loss risk.
- Maximum amplitude (MA) is a key indicator for coagulation product administration.
- Patients can be risk-stratified for substantial blood loss using TEG and platelet fibrinogen product profiles.
Background:
Operative treatment of craniosynostosis is associated with substantial blood loss, often requiring transfusion of packed red blood cells (PRBC) and coagulation products.
Aims:
The aim of this prospective study was to analyze thromboelastographic (TEG) parameters and platelet fibrinogen product to determine predictors of substantial blood loss, and the need for PRBC transfusion and coagulation products.
Methods:
With IRB approval, we enrolled 120 children undergoing craniosynostosis repair with a standardized anesthetic, fluid management, and TEG measurements at predefined times. Outcomes of interest were intraoperative blood loss, and need for PRBC transfusion and coagulation products. Multivariable logistic regression and receiver operating characteristic (ROC) curve analysis was applied to determine independent predictors of substantial blood loss and need for coagulation products.
Results:
One hundred and eighteen children were included in the analysis. Forty-four required PRBC transfusion (median 26 ml·kg(-1) ; IQR: 22-42) with median blood loss of 56 ml·kg(-1) (IQR: 43-83). Factors associated with the PRBC transfusion included type of surgery, duration of surgery, and three TEG parameters, α-angle, MA, and K-time (all P < 0.001). A predictive algorithm was developed by subgroup analysis of cranial vault reconstruction (CVR) patients for substantial intraoperative blood loss (defined as ≥60 ml·kg(-1) ) and need for coagulation products with ROC-derived cut-off values: platelet fibrinogen product, <343; α-angle, <62°; MA, <55 mm; K-time, >2.1 min. The best prognostic combination included at least two of these four predictors (sensitivity 89%, specificity 90%). Multivariable regression identified MA as the only independent predictor of coagulation product administration (P < 0.001) and ROC analysis identified MA <46 mm as the optimal cut-off (sensitivity 86%, specificity 94%).
Conclusions:
Risk for substantial intraoperative blood loss can be assessed using TEG parameters and platelet fibrinogen product, whereas the need for coagulation products is strongly related to low MA. Patients susceptible to substantial blood loss can be risk stratified based on their TEG/platelet fibrinogen product profile.
