Correlation between quality of life and mineral metabolism in maintenance hemodialysis patients

Objective With multi-center investigation, to assess the life quality of patients with maintained hemodialysis (MHD) in Liaoning Province and to explore the relationship among the mineral metabolism, the life quality of the patients with MHD, and the repeated hospitalization within the latest three years. Methods 1192 patients with hemodialysis (at least 3 months) from January to March in 2015 at ten blood purification centers in Liaoning Province were selected for the cross - sectional survey. The Kidney Health-related Quality of Life (HRQOL) version 1.3 was used to evaluate the MHD patients' life quality. The total length of hospitalization was divided into four groups: 0 days, 3 to 15 days, 16 to 30 days and above 30 days. Results When serum calcium value ranged from 2.1 to 2.5 mmol/L, kidney - disease component summary (KDCS), mental component summary (MCS), physical component summary (PCS) and SF-36+KDCS corresponded to a higher value (P＜0.05). When serum phosphorus value ranged from 1.13 to 1.78 mmol/L, KDCS and SF-36+KDCS corresponded to a higher value (P＜0.05). When the calcium phosphorus product value ranged from 40.68 to 49.94, MCS corresponded to a higher value (P＜0.05). KDCS showed a linear correlation with age (P＜0.001), dialysis age, serum calcium (less than or equal to 2.5 mmol/L) (P＜0.05); PCS showed a linear correlation with age (P＜0.001) and dialysis age (P＜0.05); SF-36+KDCS showed a linear correlation with age (P＜0.001), and serum calcium (less than or equal to 2.5 mmol/L) (P＜0.05), while age and dialysis age were negatively correlated. The hospitalization days showed a linear correlation with age, dialysis age (P＜0.001) and serum phosphorus, calcium phosphorus product value (P＜0.05), while dialysis age and calcium phosphorus product value were negatively correlated. Among different groups of total hospitalization days in three years, age, hemodialysis age, serum calcium, serum phosphorus, calcium-phosphorus product value and quality of life values were all statistically significant (P＜0.05). Conclusions The life quality of patients with MHD were correlated with serum calcium, phosphorus, calcium and phosphorus product value, iPTH, dialysis age and age, while age and dialysis age were of negative correlation. The total number of hospitalization days in 3 years was closely linearly correlated with age and dialysis age, significantly correlated with serum phosphorus, calcium and phosphorus product value, while dialysis age, calcium and phosphorus product value were in a negative correlation. The total number of hospitalization in 3 years was correlated with the patients' age, dialysis age, serum calcium, serum phosphorus, calcium and phosphorus product value and quality of life.