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. 2024 May;42(3):326-334.
doi: 10.1007/s00774-024-01503-9. Epub 2024 Mar 28.

Prevalence of osteosarcopenia and its association with mortality and fractures among patients undergoing hemodialysis

Shun Yoshikoshi  1   2 , Shohei Yamamoto  3 , Yuta Suzuki  4 , Keigo Imamura  5 , Manae Harada  6 , Kentaro Kamiya  1 , Atsuhiko Matsunaga  1
Affiliations

Prevalence of osteosarcopenia and its association with mortality and fractures among patients undergoing hemodialysis

Shun Yoshikoshi et al. J Bone Miner Metab. 2024 May.

Abstract

Introduction: Osteosarcopenia is an age-related syndrome characterized by the coexistence of osteoporosis and sarcopenia. Little is known about the clinical implications of osteosarcopenia among patients undergoing hemodialysis. This study investigated the prevalence of osteosarcopenia and its association with all-cause mortality and fractures in this population.

Materials and methods: This retrospective cohort study included outpatients undergoing hemodialysis in Japan. Sarcopenia was defined according to the recommendations of the Asian Working Group for Sarcopenia 2019. Osteoporosis was defined as a T-score of the calcaneus bone < - 2.5. We divided patients into three groups: robust (no osteoporosis or sarcopenia), osteoporosis or sarcopenia alone (osteoporosis without sarcopenia or sarcopenia without osteoporosis), and osteosarcopenia (osteoporosis and sarcopenia). Cox proportional-hazard and negative binomial regression models were used to estimate the associations between osteosarcopenia and all-cause mortality and fractures.

Results: Among the 328 patients (mean age, 65.5 ± 11.3 years; men, 59.1%), the prevalence of osteosarcopenia was 22.9%. During the follow-up period (1972 person-years), 131 deaths and 113 fractures occurred. Patients with osteoporosis or sarcopenia alone (hazard ratio 1.36; 95% confidence interval 0.85-2.18) and osteosarcopenia (hazard ratio 2.13; 95% confidence interval, 1.23-3.68) showed a higher risk of all-cause mortality than the robust group. Similar results were observed for the risk of fractures in patients with osteosarcopenia.

Conclusions: Patients undergoing hemodialysis showed a high prevalence of osteosarcopenia, and osteosarcopenia was associated with a poor prognosis in this patient population. Assessing osteosarcopenia may be useful for accurate prognostic stratification of patients undergoing hemodialysis.

Keywords: Fractures; Hemodialysis; Mortality; Osteoporosis; Osteosarcopenia.

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