PMID- 32646504 OWN - NLM STAT- MEDLINE DCOM- 20211013 LR - 20211013 IS - 1471-2369 (Electronic) IS - 1471-2369 (Linking) VI - 21 IP - 1 DP - 2020 Jul 9 TI - Osteoporotic fracture rates in chronic hemodialysis and effect of heparin exposure: a retrospective cohort study. PG - 261 LID - 10.1186/s12882-020-01916-4 [doi] LID - 261 AB - BACKGROUND: Patients receiving chronic hemodialysis treatments are at a higher risk of fracture compared to the general population. While the use of heparin during dialysis is crucial to avoid thrombosis of the extracorporeal circuit, the association of unfractionated heparin (UFH) and the risk of osteoporotic fracture has been shown for many years. However, this association was not as clear for low-molecular-weight heparin (LMWH) and the few collected data originated from studies among pregnant women. Our aim was to measure osteoporotic fracture rate among hemodialysis patients and to evaluate the association of LMWH compared to UFH in hemodialysis. METHODS: A retrospective cohort study was conducted on data extracted from the RAMQ and Med-Echo databases from January 2007 to March 2013 with patients chronically hemodialyzed in 21 participating centers. Incidence rates for each fracture sites were measured per 1000 patient-year (p-y) and their 95% confidence intervals (CI). Osteoporotic fracture risk for a first event with LMWH compared to UFH was estimated using a cox proportional hazard model using demographics, comorbidities and drug use as covariates. RESULTS: 4796 patients undergoing chronic hemodialysis were identified. The incidence rate for all fracture sites was 22.7 /1000 p-y (95% CI: 19.6-26.1) and 12.8 /1000 p-y (95% CI: 10.5-15.4) for hip and femur fractures. We found a similar risk of osteoporotic fracture for LMWH compared to UFH (adjusted HR = 1.01; 95%CI: 0.72-1.42). Age and malignancy increased the risk of fracture while cerebrovascular disease decreased the risk of fracture. CONCLUSIONS: Compared to UFH, LMWH did not change the risk of osteoporotic fracture when used for the extracorporeal circuit anticoagulation in chronic hemodialysis. FAU - Harrak, Hind AU - Harrak H AD - Centre de recherche Hopital Maisonneuve-Rosemont, Montreal, Canada. FAU - Rene, Emilie AU - Rene E AD - Centre de recherche Hopital Maisonneuve-Rosemont, Montreal, Canada. FAU - Alsalemi, Noor AU - Alsalemi N AD - Centre de recherche Hopital Maisonneuve-Rosemont, Montreal, Canada. FAU - Elftouh, Naoual AU - Elftouh N AD - Centre de recherche Hopital Maisonneuve-Rosemont, Montreal, Canada. FAU - Lafrance, Jean-Philippe AU - Lafrance JP AUID- ORCID: 0000-0001-7876-0446 AD - Centre de recherche Hopital Maisonneuve-Rosemont, Montreal, Canada. jean-philippe.lafrance@umontreal.ca. AD - Service de nephrologie, Hopital Maisonneuve-Rosemont, 5415, boul. de l'Assomption, Montreal, Quebec, H1T 2M4, Canada. jean-philippe.lafrance@umontreal.ca. AD - Departement de pharmacologie et physiologie, Universite de Montreal, Montreal, Canada. jean-philippe.lafrance@umontreal.ca. LA - eng PT - Journal Article DEP - 20200709 PL - England TA - BMC Nephrol JT - BMC nephrology JID - 100967793 RN - 0 (Anticoagulants) RN - 0 (Heparin, Low-Molecular-Weight) RN - 9005-49-6 (Heparin) SB - IM MH - Age Factors MH - Aged MH - Aged, 80 and over MH - Anticoagulants/*therapeutic use MH - Cerebrovascular Disorders/epidemiology MH - Cohort Studies MH - Female MH - Femoral Fractures/epidemiology MH - Heparin/therapeutic use MH - Heparin, Low-Molecular-Weight/*therapeutic use MH - Hip Fractures/epidemiology MH - Humans MH - Kidney Failure, Chronic/*therapy MH - Male MH - Middle Aged MH - Neoplasms/epidemiology MH - Osteoporotic Fractures/*epidemiology MH - Proportional Hazards Models MH - Renal Dialysis/*methods MH - Retrospective Studies MH - Risk Factors PMC - PMC7350680 OTO - NOTNLM OT - Heparin, low molecular weight OT - Kidney failure, chronic OT - Osteoporotic fracture OT - Pharmacoepidemiology OT - Unfractionated heparin COIS- The authors declare that they have no competing interests. EDAT- 2020/07/11 06:00 MHDA- 2021/10/14 06:00 PMCR- 2020/07/09 CRDT- 2020/07/11 06:00 PHST- 2019/09/30 00:00 [received] PHST- 2020/06/28 00:00 [accepted] PHST- 2020/07/11 06:00 [entrez] PHST- 2020/07/11 06:00 [pubmed] PHST- 2021/10/14 06:00 [medline] PHST- 2020/07/09 00:00 [pmc-release] AID - 10.1186/s12882-020-01916-4 [pii] AID - 1916 [pii] AID - 10.1186/s12882-020-01916-4 [doi] PST - epublish SO - BMC Nephrol. 2020 Jul 9;21(1):261. doi: 10.1186/s12882-020-01916-4.