PMID- 35499336 OWN - NLM STAT- MEDLINE DCOM- 20221004 LR - 20221222 IS - 1542-6270 (Electronic) IS - 1060-0280 (Linking) VI - 56 IP - 12 DP - 2022 Dec TI - Comparison of Managing Factor Xa Inhibitor to Unfractionated Heparin Transitions by aPTT Versus a Treatment Guideline Utilizing Heparin Anti-Xa Levels. PG - 1289-1298 LID - 10.1177/10600280221090211 [doi] AB - BACKGROUND: There are inadequate data on the optimal strategy for transitioning factor Xa inhibitors (FXai; apixaban, rivaroxaban) to unfractionated heparin (UFH) infusions. OBJECTIVE: In patients transitioning from an FXai to an UFH infusion, this study compared the safety and efficacy of monitoring UFH infusions using an activated partial thromboplastin time (aPTT) titration scale versus utilizing an UFH-calibrated anti-Xa titration scale aided by a novel institutional guideline. METHODS: A retrospective cohort analysis was conducted on adult patients transitioning from an FXai to an UFH infusion at 2 medical centers from June 1, 2018, to November 1, 2020. One institution utilized aPTT while the other institution primarily used UFH-calibrated anti-Xa. The primary endpoint was a composite of death, major bleeding, or new thrombosis during the hospitalization with a planned noninferiority analysis. Secondary outcomes were also collected including the amount and duration of UFH administered between cohorts. RESULTS: The incidence rate of the primary composite endpoint was 6.3% in the anti-Xa group and 11% in the aPTT group (P < 0.001 for noninferiority, P = 0.138 for superiority) meeting noninferiority criteria. No statistical differences were seen in new thrombosis, major bleeding, or any bleeding. CONCLUSION AND RELEVANCE: This represents the first report of a comparison between aPTT versus anti-Xa monitoring in relation to clinical outcomes for patients transitioning from an FXai to an UFH infusion. A transition guideline primarily utilizing an UFH-calibrated anti-Xa assay appears to be a safe alternative to aPTT monitoring and can aid facilities in the management of patients during these complex transitions. FAU - Dingus, Scott J AU - Dingus SJ AD - Department of Pharmacy, Platte Health Center Avera, Platte, SD, USA. FAU - Smith, Alex R AU - Smith AR AD - Department of Pharmaceutical Services, Sanford USD Medical Center, Sioux Falls, SD, USA. FAU - Dager, William E AU - Dager WE AD - Department of Pharmacy, UC Davis Medical Center, Sacramento, CA, USA. FAU - Zochert, Sara AU - Zochert S AD - Department of Pharmaceutical Services, Sanford USD Medical Center, Sioux Falls, SD, USA. FAU - Nothdurft, Salli A AU - Nothdurft SA AD - Department of Pharmaceutical Services, Sanford USD Medical Center, Sioux Falls, SD, USA. FAU - Gulseth, Michael P AU - Gulseth MP AUID- ORCID: 0000-0002-4522-0985 AD - Department of Pharmaceutical Services, Sanford USD Medical Center, Sioux Falls, SD, USA. AD - Department of Internal Medicine, Sanford School of Medicine, University of South Dakota, Sioux Falls, SD, USA. LA - eng PT - Comparative Study PT - Journal Article DEP - 20220502 PL - United States TA - Ann Pharmacother JT - The Annals of pharmacotherapy JID - 9203131 RN - 0 (Anticoagulants) RN - 0 (Factor Xa Inhibitors) RN - 0 (Fibrinolytic Agents) RN - 0 (Heparin, Low-Molecular-Weight) RN - 9005-49-6 (Heparin) RN - 9NDF7JZ4M3 (Rivaroxaban) RN - EC 3.4.21.6 (Factor Xa) SB - IM MH - Adult MH - Anticoagulants/adverse effects MH - Drug Monitoring MH - Factor Xa MH - *Factor Xa Inhibitors/adverse effects MH - Fibrinolytic Agents/therapeutic use MH - Hemorrhage/chemically induced/drug therapy MH - *Heparin/adverse effects MH - Heparin, Low-Molecular-Weight MH - Humans MH - Partial Thromboplastin Time MH - Retrospective Studies MH - Rivaroxaban/adverse effects OTO - NOTNLM OT - Xa level OT - activated partial thromboplastin time OT - anti-Xa assay OT - anticoagulant OT - anticoagulation OT - anticoagulation bridging OT - apixaban OT - conversions OT - direct oral anticoagulant OT - factor Xa inhibitor OT - heparin OT - rivaroxaban OT - transitions OT - unfractionated heparin EDAT- 2022/05/03 06:00 MHDA- 2022/10/05 06:00 CRDT- 2022/05/02 09:03 PHST- 2022/05/03 06:00 [pubmed] PHST- 2022/10/05 06:00 [medline] PHST- 2022/05/02 09:03 [entrez] AID - 10.1177/10600280221090211 [doi] PST - ppublish SO - Ann Pharmacother. 2022 Dec;56(12):1289-1298. doi: 10.1177/10600280221090211. Epub 2022 May 2.