Maintenance hemodialysis. Survival beyond the first decade

Area of Science:

• Nephrology
• Cardiovascular Medicine
• Public Health

Background:

• Maintenance dialysis (MD) is a critical treatment for end-stage renal disease.
• Long-term survival on MD is influenced by various patient-specific and treatment-related factors.
• Identifying key mortality predictors is essential for optimizing patient care and outcomes.

Purpose of the Study:

• To identify significant risk factors for cardiovascular mortality in a cohort of maintenance dialysis patients.
• To determine the primary causes of death in patients without established cardiovascular risk factors on MD.
• To assess the potential for improved long-term survival through risk factor management in MD patients.

Main Methods:

• Retrospective analysis of 24 patients initiating maintenance dialysis between 1964 and 1968.
• Inclusion criteria: initially free of other complicating diseases.
• Analysis focused on age at dialysis initiation, hypertension, calcium-phosphate product, and causes of death.

Main Results:

• Age at dialysis initiation, sustained hypertension, and elevated calcium-phosphate product were confirmed as significant risk factors for cardiovascular mortality.
• In patients without these risk factors, sepsis emerged as the leading cause of death, accounting for 35.7% of fatalities.
• The upper limit for long-term survival in MD patients with controlled risk factors remains undefined.

Conclusions:

• Controlling modifiable risk factors like hypertension and calcium-phosphate levels is crucial for reducing cardiovascular mortality in maintenance dialysis patients.
• Sepsis represents a significant threat to survival in MD patients who do not have traditional cardiovascular risk factors.
• Further research is needed to establish the maximum achievable long-term survival on maintenance dialysis with comprehensive risk factor management.