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Published in: Pediatric Cardiology 5/2023

22-12-2022 | Warfarin | Research

Utility of the Total Thrombus-Formation Analysis System as a Tool for Evaluating Thrombogenicity and Monitoring Antithrombotic Therapy in Pediatric Fontan Patients

Authors: Osamu Matsuo, Masanobu Ishii, Koichi Kaikita, Jun Morinaga, Fumiya Miyamura, Shiro Matsumoto, Kenichi Tsujita, Kimitoshi Nakamura

Published in: Pediatric Cardiology | Issue 5/2023

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Abstract

Background

There is no consensus regarding thromboprophylaxis after Fontan procedure, and novel tools to assess thrombogenicity are needed to establish optimal thromboprophylaxis. The Total Thrombus-formation Analysis System (T-TAS) was developed for the quantitative analysis of thrombus formation using microchips with thrombogenic surfaces. This prospective study evaluated the utility of T-TAS in the assessment of thrombogenicity in pediatric Fontan patients.

Methods and Results

The participants included 20 consecutive Fontan patients who underwent cardiac catheterization and 30 healthy controls. Blood samples collected without and with antithrombotic therapy (aspirin or aspirin and warfarin) were used for T-TAS to compute the area under the curve (AUC) in the atheroma (AR10-AUC30) and platelet (PL18-AUC10) chips. A higher AUC indicates higher thrombogenicity.
T-TAS values showed that patients in the Fontan group without antithrombotic therapy had lower thrombogenicity than those in the control group [PL18-AUC10, median (interquartile range) 356 (313–394) vs. 408 (392–424); AR10-AUC30, median (interquartile range) 1270 (1178–1351) vs. 1382 (1338–1421)]. Aspirin and warfarin therapies significantly decreased PL18-AUC10 and AR10-AUC30, respectively, compared with those of patients without antithrombotic therapy (P < 0.001 for each comparison). Subgroup analysis divided by low (< 9 mmHg) or high (≥ 9 mmHg) central venous pressure (CVP) showed that CVP affects the reduction in AR10-AUC30 with antithrombotic therapy.

Conclusions

T-TAS may be a useful tool for monitoring thrombogenicity and antithrombotic therapy in Fontan patients.
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Metadata
Title
Utility of the Total Thrombus-Formation Analysis System as a Tool for Evaluating Thrombogenicity and Monitoring Antithrombotic Therapy in Pediatric Fontan Patients
Authors
Osamu Matsuo
Masanobu Ishii
Koichi Kaikita
Jun Morinaga
Fumiya Miyamura
Shiro Matsumoto
Kenichi Tsujita
Kimitoshi Nakamura
Publication date
22-12-2022
Publisher
Springer US
Keyword
Warfarin
Published in
Pediatric Cardiology / Issue 5/2023
Print ISSN: 0172-0643
Electronic ISSN: 1432-1971
DOI
https://doi.org/10.1007/s00246-022-03076-8

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