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Point-of-Care Fibrinogen Testing in Pregnancy

Katz, Daniel MD; Hamburger, Joshua MD; Batt, Dorian MD; Zahn, Jeffrey MD; Beilin, Yaakov MD

doi: 10.1213/ANE.0000000000003301
Obstetric Anesthesiology
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Agreement between estimated fibrinogen concentration via thromboelastography and traditional assays is not established in the parturient. We therefore recruited 56 parturients and performed Clauss and functional fibrinogen level (FLEV) tests. Mean difference of measurements was 36.8 mg/dL (95% CI, 21.8–51.9) with a standard deviation of 52.8 mg/dL. Calculated limits of agreement were 140.2 mg/dL (95% CI, 166.3–114.6) and −66.6 mg/dL (95% CI, −40.8 to −92.5), within the maximum allowable difference of 165 mg/dL. We therefore conclude that while most measurements fell within the limits of agreement, more work is needed to clearly define the role of this test in the obstetric population.

From the Department of Anesthesiology, Pain, and Perioperative Medicine, Icahn School of Medicine at Mount Sinai, New York, New York.

Published ahead of print 29 December 17.

Accepted for publication December 29, 2017.

Funding: None.

The authors declare no conflicts of interest.

Supplemental digital content is available for this article. Direct URL citations appear in the printed text and are provided in the HTML and PDF versions of this article on the journal’s website.

Summary Statement: In this study, the relationship between formal laboratory Clauss and thromboelastography-derived fibrinogen counts is examined.

Reprints will not be available from the authors.

Address correspondence to Daniel Katz, MD, Icahn School of Medicine at Mount Sinai, 1 Gustave L Levy Pl, Box 1010 KCC 8th Floor, New York, NY 10029. Address e-mail to Daniel.Katz@mountsinai.org.

Copyright © 2018 International Anesthesia Research Society
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