Frailty and sarcopenia in elderly non-dialysis patients with chronic kidney disease stage 3-5: a cross sectional study

Background With the aging of the population, chronic kidney disease (CKD) and sarcopenia are the common diseases among the elderly. Non-dialysis patients with CKD account for a relatively high proportion, and the analysis of their general clinical characteristics has been more familiar. However, the study of sarcopenia in non-dialysis with CKD is not enough. Methods This is a cross sectional study. Non-dialysis patients with CKD stage 3–5 were continuously selected. Patients were divided into 3 groups based on the Fried scale, Non-frail group, Pre-frail group and Frail group. At the same time, muscle mass of the hospitalized patients was measured by dual-energy X-ray absorptiometry (DXA), and according to the test results, they were divided into sarcopenia and non-sarcopenia group. Baseline data and the measurement of the sarcopenia of the two groups were analyzed. Results A total of 102 elderly patients with chronic kidney disease stage 3–5 were continuously enrolled. There were 21 patients (20.6%) categorized as sarcopenia, 81 patients (79.4%) categorized as non-sarcopenia according to the measurement results of DXA. Frailty was assessed by the criteria of frailty phenotype, there were 13 patients of sarcopenia in the frail group, 6 patients of sarcopenia in the pre-frail group, and 2 patients of sarcopenia in the non-frail group, accounting for 31.7%, 20.0%, 6.5%, respectively. Moreover, the analysis of the related risk factors of sarcopenia showed that body mass index (BMI)༜23 kg/m2(OR = 3.82, 95%CI 1.33–10.97, P = 0.013), MNA-SF ≤ 11(OR = 3.97, 95%CI 1.08–14.58, P = 0.038) were the independent risk factors for sarcopenia in non-dialysis patients with chronic kidney disease stage 3–5. Conclusions The prevalence of sarcopenia in elderly non-dialysis patients with chronic kidney disease stage 3–5 was high, and sarcopenia was common in the frail patients. BMI༜23 kg/m2 and MNA-SF ≤ 11were the independent risk factors for sarcopenia in non-dialysis patients with chronic kidney disease stage 3–5.