PMID- 33215504 OWN - NLM STAT- MEDLINE DCOM- 20210906 LR - 20210906 IS - 1542-6270 (Electronic) IS - 1060-0280 (Linking) VI - 55 IP - 8 DP - 2021 Aug TI - Safety of High-Dose Unfractionated Heparin for Prophylaxis of Venous Thromboembolism in Hospitalized Obese Patients. PG - 963-969 LID - 10.1177/1060028020974569 [doi] AB - BACKGROUND: Optimal dosing of unfractionated heparin (UFH) for thromboprophylaxis in the obese patient population is uncertain because of their high-risk, prothrombotic state and a complexity of pharmacokinetic considerations. Literature on the appropriateness of the use of a higher dose UFH regimen remains unclear and inconsistent. OBJECTIVE: To evaluate the safety of the use of 7500 units every 8 hours (high-dose) of subcutaneous UFH compared with the use of 5000 units every 8 hours (standard-dose) of subcutaneous UFH for thromboprophylaxis in obese patients (defined as BMI >/=30 kg/m(2)). METHODS: In a retrospective cohort study, 326 adult patients were included, with a BMI >/=30 kg/m(2), who were admitted to a large, urban academic medical center between September 1, 2015, and September 1, 2018. Patients received either high-dose or standard-dose UFH for at least 48 hours. The primary end point was the incidence rate of bleeding events, defined as a >/=2-g/dL fall in hemoglobin level or receipt of transfusion of 2 or more units of packed red blood cells (pRBCs) from the start of the UFH order. RESULTS: The incidence rate of bleeding was significantly higher in those who received high-dose UFH (43%) compared with those who received standard-dose UFH (29%; P = 0.008). No significant difference was found between venous thromboembolism event rates. CONCLUSION AND RELEVANCE: High-dose UFH was associated with an increased bleeding event rate compared with standard-dose UFH in patients with a BMI >/=30 kg/m(2). This raises safety concerns about the appropriateness of utilizing this regimen in this population. FAU - Regis, Teresa AU - Regis T AUID- ORCID: 0000-0003-3420-9139 AD - Montefiore Medical Center, Bronx, NY, USA. FAU - Goriacko, Pavel AU - Goriacko P AUID- ORCID: 0000-0001-6875-3082 AD - Montefiore Medical Center, Bronx, NY, USA. AD - Albert Einstein College of Medicine, Bronx, NY, USA. FAU - Ferguson, Nadia AU - Ferguson N AD - Montefiore Medical Center, Bronx, NY, USA. AD - Albert Einstein College of Medicine, Bronx, NY, USA. LA - eng PT - Journal Article DEP - 20201120 PL - United States TA - Ann Pharmacother JT - The Annals of pharmacotherapy JID - 9203131 RN - 0 (Anticoagulants) RN - 0 (Heparin, Low-Molecular-Weight) RN - 9005-49-6 (Heparin) SB - IM MH - Anticoagulants/adverse effects MH - *Heparin/adverse effects MH - Heparin, Low-Molecular-Weight MH - Humans MH - Obesity/complications MH - Retrospective Studies MH - *Venous Thromboembolism/epidemiology/prevention & control OTO - NOTNLM OT - bleeding OT - heparin OT - obesity OT - safety OT - thromboprophylaxis OT - venous thromboembolism EDAT- 2020/11/21 06:00 MHDA- 2021/09/07 06:00 CRDT- 2020/11/20 08:39 PHST- 2020/11/21 06:00 [pubmed] PHST- 2021/09/07 06:00 [medline] PHST- 2020/11/20 08:39 [entrez] AID - 10.1177/1060028020974569 [doi] PST - ppublish SO - Ann Pharmacother. 2021 Aug;55(8):963-969. doi: 10.1177/1060028020974569. Epub 2020 Nov 20.