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Viscoelastic testing in pediatric patients
Thorsten Haas1, David Faraoni2
1Department of Pediatric Anesthesia, Zurich University Children's Hospital, Zurich, Switzerland.
Insights
Viscoelastic testing-guided transfusion algorithms improve bleeding management in children. This approach aids rapid detection of coagulation disorders and reduces blood product transfusion needs in pediatric patients.
Area of Science:
- Pediatric Hematology
- Transfusion Medicine
- Critical Care
Background:
- Current bleeding management guidelines for neonates and children often extrapolate from adult data due to limited pediatric evidence.
- Viscoelastic testing (VET) offers a point-of-care method for assessing hemostasis, but its application in pediatrics is less established.
- Hemostasis maturation continues through the first year of life, complicating the direct application of adult reference ranges.
Purpose of the Study:
- To provide a structured overview of published literature on using viscoelastic testing (VET) to guide bleeding management in neonates and children.
- To evaluate the feasibility and impact of VET-based transfusion algorithms in pediatric populations.
- To summarize current evidence on VET device availability and reference range establishment for pediatric use.
Main Methods:
- Systematic review of published studies on VET in pediatric bleeding management.
- Analysis of studies correlating VET results with standard laboratory tests and bleeding prediction.
- Evaluation of clinical trials implementing VET-guided transfusion algorithms in pediatric cardiac surgery.
Main Results:
- Limited pediatric-specific reference ranges exist for most VET devices.
- Adult reference ranges may be applicable for children over one year of age.
- Studies show VET can predict bleeding and detect coagulation disorders; implementation in pediatric cardiac surgery reduced transfusion requirements.
Conclusions:
- Viscoelastic testing-guided transfusion algorithms are a feasible and beneficial approach for managing bleeding in children.
- This strategy improves bleeding management and rationalizes blood product use in pediatric patients.
- Further research is needed, but VET shows promise for optimizing hemostasis management in young patients.
Abstract:
A tailored transfusion algorithm based on viscoelastic testing in the perioperative period or in trauma patients is recommended by guidelines for bleeding management. Bleeding management strategies in neonates and children are mostly extrapolated from the adult experience, as published evidence in the youngest age group is scarce. This manuscript is intended to give a structured overview of what has been published on the use of viscoelastic testing to guide bleeding management in neonates and children. Several devices that use either the traditional viscoelastic method or resonance viscoelastography technology are on the market. Reference ranges for children have been evaluated in only some of them. As most of the hemostasis maturation processes can be observed during the first year of life, adult reference ranges for viscoelastic testing could be applied over the age of 1 year. The majority of the published trials in children are based on retrospective analyses describing the correlation between viscoelastic testing and standard laboratory testing or focusing on the prediction of bleeding. Clinically more relevant studies in pediatric patients undergoing cardiac surgery have demonstrated that the implementation of a transfusion algorithm based on viscoelastic testing has significantly reduced transfusion requirements and that this approach has enabled a rapid detection of coagulation disorders in the presence of excessive bleeding. Although further studies are urgently needed, experts have reviewed the use of a transfusion algorithm based on viscoelastic testing in children as a feasible approach, as it has been shown to improve bleeding management and rationalize blood product transfusion.
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