PMID- 37303766 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230701 IS - 1551-6776 (Print) IS - 2331-348X (Electronic) IS - 1551-6776 (Linking) VI - 28 IP - 3 DP - 2023 TI - Comparison of Time Within Therapeutic Range Using Anti-Factor Xa Versus Activated Partial Thromboplastin Time Monitoring of Unfractionated Heparin in Children. PG - 228-234 LID - 10.5863/1551-6776-28.3.228 [doi] AB - OBJECTIVE: To compare unfractionated heparin (UFH) monitoring using time in therapeutic range of activated partial thromboplastin time (aPTT) versus anti-factor Xa activity (anti-Xa) in children. METHODS: This retrospective chart review, with data between October 2015 and October 2019, included pediatric patients younger than 18 years on therapeutic UFH infusion with aPTT or anti-Xa monitoring. Patients receiving extracorporeal membrane oxygenation, dialysis, concomitant anticoagulants, prophylactic UFH, no stated goal, and UFH administered for less than 12 hours were excluded. The primary outcome compared the percentage of time in therapeutic range between aPTT and anti-Xa. Secondary outcomes included time to first therapeutic value, UFH infusion rates, mean rate adjustments, and adverse events. RESULTS: A total of 65 patients were included, with 33 aPTT patients and 32 anti-Xa patients, representing 39 UFH orders in each group. Baseline characteristics were similar between groups, with an overall mean age of 1.4 years and mean weight of 6.7 kg. The anti-Xa cohort demonstrated a statistically significantly higher percentage of time in therapeutic range compared with the aPTT group (50.3% vs 26.9%, p = 0.002). The anti-Xa group also demonstrated a trend toward decreased time to first therapeutic value compared with aPTT (14 vs 23.2 hours, p = 0.12). Two patients in each group experienced new or worsening thrombosis. Six patients in the aPTT cohort experienced bleeding. CONCLUSIONS: This study demonstrated greater time was spent within therapeutic range for children receiving UFH monitored with anti-Xa compared with aPTT. Future studies should assess clinical outcomes in a larger population. CI - Copyright. Pediatric Pharmacy Association. All rights reserved. For permissions, email: membership@pediatricpharmacy.org 2023. FAU - Haftmann, Richard J AU - Haftmann RJ AD - Department of Pharmacy Services (RJH, BAH), University of California, Davis Health, Sacramento, CA. FAU - Pineda, Erika May AU - Pineda EM AD - Department of Pharmacy Services (EMP), Children's Hospital of Philadelphia, Philadelphia, PA. FAU - Hall, Brent A AU - Hall BA AD - Department of Pharmacy Services (RJH, BAH), University of California, Davis Health, Sacramento, CA. FAU - Wilson, Machelle D AU - Wilson MD AD - Department of Public Health Sciences (MDW), Division of Biostatistics, Clinical and Translational Science Center, University of California, Davis Health, Sacramento, CA. FAU - Mateev, Stephanie N AU - Mateev SN AD - Department of Pediatrics, Division of Pediatric Critical Care (SNM), University of California, Davis Health, Sacramento, CA. LA - eng GR - UL1 TR001860/TR/NCATS NIH HHS/United States PT - Journal Article DEP - 20230602 PL - United States TA - J Pediatr Pharmacol Ther JT - The journal of pediatric pharmacology and therapeutics : JPPT : the official journal of PPAG JID - 101089851 PMC - PMC10249978 OTO - NOTNLM OT - anticoagulants OT - heparin OT - pediatrics OT - therapeutic drug monitoring OT - thromboembolism COIS- Disclosures. The authors declare no conflicts or financial interest in any product or service mentioned in the manuscript. The authors had full access to all the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis. The content is solely the responsibility of the authors and does not necessarily represent the official views of the NIH. EDAT- 2023/06/12 06:42 MHDA- 2023/06/12 06:43 PMCR- 2023/01/01 CRDT- 2023/06/12 03:57 PHST- 2022/04/13 00:00 [received] PHST- 2022/07/19 00:00 [accepted] PHST- 2023/06/12 06:43 [medline] PHST- 2023/06/12 06:42 [pubmed] PHST- 2023/06/12 03:57 [entrez] PHST- 2023/01/01 00:00 [pmc-release] AID - 10.5863/1551-6776-28.3.228 [doi] PST - ppublish SO - J Pediatr Pharmacol Ther. 2023;28(3):228-234. doi: 10.5863/1551-6776-28.3.228. Epub 2023 Jun 2.