Serum creatinine to cystatin C ratio reflects preoperative and early postoperative walking ability in older patients with hip fracture

Autor: Naoki Okubo, Takashi Yoshida, Kazuya Tanaka, Naoya Okada, Kunihiko Hosoi, Masato Ohara, Kenji Takahashi
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Journal of Cachexia, Sarcopenia and Muscle, Vol 13, Iss 2, Pp 945-954 (2022)
Druh dokumentu: article
ISSN: 2190-6009
2190-5991
DOI: 10.1002/jcsm.12940
Popis: Abstract Background The sarcopenia index (SI), calculated as the ratio of serum creatinine to cystatin C levels, reflects skeletal muscle mass and strength. Patients with hip fracture (HF) and sarcopenia have poor functional outcomes, and many require long‐term care after surgery. We hypothesized that the SI can predict preoperative and early postoperative functional outcomes. Methods Preoperative serum creatinine and cystatin C were measured to calculate the SI for patients with surgically treated HF (n = 130, mean age: 87.8 ± 6.9 years). Walking ability before and 2 weeks after surgery was assessed, and patients were dichotomized into independent and assistance groups. To assess the validity of the SI, we examined its correlation with the quality [computed tomography (CT) value] and quantity (cross‐sectional area) of the muscles around the hip on the non‐operated side, which were preoperatively measured using CT. Receiver operating characteristic (ROC) analysis was performed to evaluate the prognostic value of the SI. Results The SI of the preoperative independent (n = 77) and assistance groups (n = 53) significantly differed (70.2 ± 12.4 and 60.1 ± 9.8, respectively, P
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