Predictors of functional impairment and mortality in patients on maintenance hemodialysis

Semin Dial. 2024 Mar-Apr;37(2):138-144. doi: 10.1111/sdi.13173. Epub 2023 Aug 24.

Abstract

Introduction: Numerous factors impact the mortality and functional abilities of patients with end-stage renal disease (ESRD) receiving maintenance hemodialysis (MHD). We aimed to determine the mortality rate at 1 year of MHD, identify predictors of mortality, and assess functional impairments concerning activities of daily living (ADLs) and instrumental ADL (IADL).

Methods: Our study was prospective, observational cohort study that enrolled patients receiving MHD. We collected demographic, clinical, and laboratory data. We also assessed ADLs and IADLs for daily performance.

Results: Our study included 167 patients with a mean age of 51.6 ± 13.1 years, and 56.9% were male. Of these, 80 (47.9%) were diabetic, and 145 (86.8%) were hypertensive. The mortality rate after 1 year of MHD was 10.8%, and cardiovascular causes accounted for over 70% of total deaths. Sudden cardiac death was the most frequent cause (38.9%), followed by cardiogenic shock (22.2%). Older age and low parathormone levels (<300 pg/mL) were significantly associated with higher mortality rates. Mean ADL and IADL scores were 4.5 ± 1.3 and 6.3 ± 2.7, respectively. Eighteen (10.8%) and 56 (33.5%) patients had low ADL and IADL scores, respectively. Although statistically insignificant, a higher proportion of non-survivors exhibited low IADL and ADL scores. Older age, longer diabetes duration, and higher BMI levels were significantly associated with lower IADL scores.

Conclusions: Older age and suppressed PTH levels are predictors of mortality in ESRD patients receiving MHD. These patients require regular follow-ups to rule out cardiovascular morbidity. Functional impairment is prevalent but remains underdiagnosed in MHD patients. It should be monitored regularly to improve quality of life in ESRD.

Publication types

  • Observational Study

MeSH terms

  • Activities of Daily Living*
  • Adult
  • Female
  • Humans
  • Kidney Failure, Chronic* / therapy
  • Male
  • Middle Aged
  • Prospective Studies
  • Quality of Life
  • Renal Dialysis / adverse effects