In-center nocturnal hemodialysis improves health-related quality of life for patients with end-stage renal disease

BACKGROUND: Conventional in-center hemodialysis (HD) is associated with significant symptom burden and reduced health-related quality of life (HRQOL). The HRQOL effects of conversion to in-center nocturnal hemodialysis (INHD) remain unclear, especially amongst those with poor HRQOL. METHODS: Prospective cohort study of HD patients converting to INHD. Linear regression models summarized the mean score at baseline and at 12 months for the cohort. To assess whether patients with low baseline HRQOL derive greater benefit, we compared values before and after by levels of baseline score for each domain (below vs equal to or above the median) using a formal interaction test (t test). RESULTS: 36 patients started INHD, 7 withdrew (5 transplanted, 1 death, 1 moved) and 5 declined follow-up. After 12 months the mental component score (MCS) increased by 7.1 points to a value of 51.0 (95% CI + 1.5 to 10.9, p = 0.01). Amongst patients with baseline scores below the median, improvements were seen in: Symptoms/Problems of Kidney Disease (+ 15.2, 95% CI + 5.5 to + 24.9, p = 0.003), Effects of Kidney Disease (+ 16.9, 95% CI + 2.2 to + 31.7, p = 0.026), Physical Component Score (+ 9.4, 95% CI + 1.69 to + 17.2, p = 0.018), MCS (+ 10.7, 95% CI + 2.4 to + 19.1, p = 0.013). Burden of Kidney Disease domain change was not significant (+ 15.1, 95% CI - 2.1 to + 32.3, p = 0.083). DISCUSSION: INHD is a potential intervention for HD patients who struggle with reduced HRQOL, especially for those who struggle with poor mental health. Medical benefits of reduced pill burden and improved phosphate control occur with transition to INHD.