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Related Experiment Video

Updated: May 31, 2026

Viscoelastic Characterization of Soft Tissue-Mimicking Gelatin Phantoms using Indentation and Magnetic Resonance Elastography

Viscoelastic Characterization of Soft Tissue-Mimicking Gelatin Phantoms using Indentation and Magnetic Resonance Elastography

Published on: May 10, 2022

Con: Viscoelastic Testing Should Not Be Used Routinely but Selectively in Cardiac Surgery.

Matthew Cameron¹, Taysir Awad²

¹Department of Anesthesia, McGill University, Montreal, Canada; Department of Anesthesia, Jewish General Hospital, Canada.

Journal of Cardiothoracic and Vascular Anesthesia

|May 29, 2026

Summary

This summary is machine-generated.

Viscoelastic testing (VET) is beneficial in cardiac surgery when used selectively for active bleeding, not routinely preoperatively. Evidence supports VET within blood management algorithms for evident bleeding, not for all patients.

Keywords:

bleeding management algorithms cardiac surgery coagulopathy patient blood management point-of-care hemostatic testing viscoelastic testing

Related Experiment Videos

Last Updated: May 31, 2026

Viscoelastic Characterization of Soft Tissue-Mimicking Gelatin Phantoms using Indentation and Magnetic Resonance Elastography

Viscoelastic Characterization of Soft Tissue-Mimicking Gelatin Phantoms using Indentation and Magnetic Resonance Elastography

Published on: May 10, 2022

Area of Science:

Cardiovascular Surgery
Hemostasis and Thrombosis
Transfusion Medicine

Background:

Viscoelastic testing (VET) is increasingly utilized in cardiac surgery for bleeding management.
Current evidence supporting VET primarily focuses on patients with active bleeding.
Preoperative VET lacks reliability in predicting bleeding or transfusion needs.

Purpose of the Study:

To evaluate the efficacy and appropriate application of VET in cardiac surgery.
To differentiate the benefits of VET in active bleeding versus routine preoperative screening.
To inform evidence-based guidelines regarding VET use in cardiac surgery.

Main Methods:

Review of randomized trials and meta-analyses on VET in cardiac surgery.
Analysis of evidence regarding preoperative VET versus VET in clinically evident bleeding.
Assessment of current expert guidelines on VET utilization.

Main Results:

VET improves outcomes when integrated into blood management algorithms for active bleeding.
Routine preoperative VET does not reliably predict bleeding or transfusion requirements.
Indiscriminate VET may lead to unnecessary blood product administration and increased costs.

Conclusions:

Selective VET for suspected coagulopathy in cardiac surgery preserves benefits and minimizes harm.
Established clinical predictors and standard labs are effective for bleeding risk assessment.
Routine preoperative VET for all cardiac surgery patients is discouraged by expert guidelines.