Early peritonitis is an independent risk factor for mortality in elderly peritoneal dialysis patients

Area of Science:

• Nephrology
• Geriatric Medicine
• Infectious Diseases

Background:

• Peritonitis is a common complication in peritoneal dialysis (PD).
• The specific impact of early-onset peritonitis on elderly PD patients remains under-researched.
• Understanding early peritonitis outcomes is vital for geriatric PD management.

Purpose of the Study:

• To investigate the effect of early peritonitis on patient survival and technique longevity in elderly PD patients.
• To compare outcomes between patients experiencing no peritonitis, early peritonitis, and late peritonitis.

Main Methods:

• Retrospective analysis of elderly PD patients (age ≥65) from 2004-2013.
• Definition of early peritonitis as occurring within 6 months of PD initiation.
• Cox regression analysis to compare patient survival across non-peritonitis, early peritonitis, and late peritonitis groups, adjusting for key clinical factors.

Main Results:

• The study included 155 elderly PD patients: 78 (non-peritonitis), 32 (early peritonitis), and 45 (late peritonitis).
• No significant difference in causative organisms for first peritonitis was observed between early and late groups.
• Multivariable analysis revealed that both non-peritonitis (HR 0.57) and late peritonitis (HR 0.37) groups had significantly lower mortality rates compared to the early peritonitis group, after adjusting for age, diabetes, albumin, and residual renal function.

Conclusions:

• Early peritonitis (within 6 months) is an independent risk factor for increased mortality in elderly patients undergoing peritoneal dialysis.
• These findings highlight the critical need for vigilant monitoring and management of peritonitis in the early stages of PD for older adults.