PMID- 38355124 OWN - NLM STAT- Publisher LR - 20240214 IS - 1880-3873 (Electronic) IS - 1340-3478 (Linking) DP - 2024 Feb 14 TI - Unfractionated Heparin Safety in COVID-19: Incidence and Risks of Bleeding Complications in Japan. LID - 10.5551/jat.64448 [doi] AB - AIM: Several studies have shown the efficacy and safety of low-molecular-weight heparin use in coronavirus disease 2019 (COVID-19), but that of unfractionated heparin (UFH) has not been investigated. We investigated the prevalence of bleeding complications during UFH administration, its impact on mortality, and the risk factors of bleeding outcomes associated with UFH. METHODS: This retrospective cohort study was conducted at a single-center tertiary care hospital, including hospitalized patients with COVID-19. The primary outcomes were measured as the prevalence of bleeding complications during hospitalization, and the secondary outcomes were thromboembolic events and 60-day mortality rates. Logistic regression analysis and propensity score matching were used to assess risk factors for bleeding complications and their impact on mortality. RESULTS: Among 1035 included patients, 516 patients were treated with UFH. Twelve (2.3%) patients in the UFH group experienced major bleeding. The prevalence of major bleeding in patients treated with therapeutic-dose UFH was 9.2%. Logistic regression analysis showed that age >/= 60 years (adjusted odds ratio [aOR], 3.89; 95% confidence interval [CI], 1.01-15.0; P<.05) and COVID-19 severity (aOR, 35.9; 95% CI, 4.57-282; P <.05) were associated with major bleeding complications. After propensity score matching, 11 major and 11 non-major bleeding cases (including minor bleeding) were matched. The 60-day cumulative mortality rate between the two groups did not differ significantly (P=.13, log-rank test). CONCLUSIONS: The incidence of major bleeding in COVID-19 patients using therapeutic-dose UFH was relatively high. Critical COVID-19 and older age were risk factors for bleeding complications. FAU - Sato, Lubna AU - Sato L AD - Disease Control and Prevention Center, National Center for Global Health and Medicine. AD - Department of Emergency and Critical Care Medicine, Fukushima Medical University. FAU - Iwamoto, Noriko AU - Iwamoto N AD - Disease Control and Prevention Center, National Center for Global Health and Medicine. AD - AMR Clinical Reference Center, National Center for Global Health and Medicine. FAU - Kakumoto, Yuko AU - Kakumoto Y AD - Disease Control and Prevention Center, National Center for Global Health and Medicine. FAU - Tsuzuki, Shinya AU - Tsuzuki S AD - Disease Control and Prevention Center, National Center for Global Health and Medicine. AD - AMR Clinical Reference Center, National Center for Global Health and Medicine. FAU - Togano, Tomiteru AU - Togano T AD - Department of Hematology, National Center for Global Health and Medicine. FAU - Ishikane, Masahiro AU - Ishikane M AD - Disease Control and Prevention Center, National Center for Global Health and Medicine. AD - AMR Clinical Reference Center, National Center for Global Health and Medicine. FAU - Okumura, Nobumasa AU - Okumura N AD - Disease Control and Prevention Center, National Center for Global Health and Medicine. FAU - Yamada, Gen AU - Yamada G AD - Disease Control and Prevention Center, National Center for Global Health and Medicine. FAU - Inada, Makoto AU - Inada M AD - Disease Control and Prevention Center, National Center for Global Health and Medicine. FAU - Suzuki, Tetsuya AU - Suzuki T AD - Disease Control and Prevention Center, National Center for Global Health and Medicine. FAU - Hojo, Masayuki AU - Hojo M AD - Department of Respiratory Medicine, National Center for Global Health and Medicine. FAU - Takasaki, Jin AU - Takasaki J AD - Department of Respiratory Medicine, National Center for Global Health and Medicine. FAU - Sasaki, Ryo AU - Sasaki R AD - Department of Emergency Medicine and Critical Care, National Center for Global Health and Medicine. FAU - Kimura, Akio AU - Kimura A AD - Department of Emergency Medicine and Critical Care, National Center for Global Health and Medicine. FAU - Teruya, Katsuji AU - Teruya K AD - AIDS Clinical Center, National Center for Global Health and Medicine. FAU - Okamoto, Tatsuya AU - Okamoto T AD - Department of Intensive Care Medicine, National Center for Global Health and Medicine. FAU - Hayakawa, Kayoko AU - Hayakawa K AD - Disease Control and Prevention Center, National Center for Global Health and Medicine. AD - AMR Clinical Reference Center, National Center for Global Health and Medicine. FAU - Hara, Hisao AU - Hara H AD - Department of Cardiology, National Center for Global Health and Medicine. FAU - Iseki, Ken AU - Iseki K AD - Department of Emergency and Critical Care Medicine, Fukushima Medical University. FAU - Ohmagari, Norio AU - Ohmagari N AD - Disease Control and Prevention Center, National Center for Global Health and Medicine. AD - AMR Clinical Reference Center, National Center for Global Health and Medicine. LA - eng PT - Journal Article DEP - 20240214 PL - Japan TA - J Atheroscler Thromb JT - Journal of atherosclerosis and thrombosis JID - 9506298 SB - IM OTO - NOTNLM OT - Bleeding complication OT - Bleeding risk factors OT - COVID-19 OT - Unfractionated heparin OT - Venous thromboembolism EDAT- 2024/02/15 00:42 MHDA- 2024/02/15 00:42 CRDT- 2024/02/14 19:53 PHST- 2024/02/15 00:42 [medline] PHST- 2024/02/15 00:42 [pubmed] PHST- 2024/02/14 19:53 [entrez] AID - 10.5551/jat.64448 [doi] PST - aheadofprint SO - J Atheroscler Thromb. 2024 Feb 14. doi: 10.5551/jat.64448.