Peritoneal dialysis as therapy for electrolyte and acid base disorders

Area of Science:

• Nephrology
• Critical Care Medicine
• Biochemistry

Background:

• Metabolic alkalosis (MA) and electrolyte disturbances pose significant clinical challenges.
• Conventional hemodialysis (HD) can be ineffective for severe MA in renal failure patients.
• Peritoneal dialysis (PD) offers a customizable fluid composition for tailored treatment.

Purpose of the Study:

• To evaluate the efficacy of PD in treating severe metabolic alkalosis and electrolyte imbalances.
• To explore the use of modified PD fluid composition for specific acid-base and electrolyte disorders.
• To assess PD as a therapeutic option beyond traditional renal failure management.

Main Methods:

• PD was utilized with adjusted fluid compositions, primarily physiological saline, to treat MA in nine patients with renal failure.
• Modified solutions were employed to address hypernatremia and hyponatremia.
• Specific PD fluid formulations were used to treat lactic acidosis in two patients.

Main Results:

• PD effectively corrected metabolic alkalosis, normalizing pH and base excess (BE) in patients with renal failure.
• PD successfully managed hypernatremia and hyponatremia by adjusting solution osmolality and sodium concentration.
• PD facilitated the correction of lactic acidosis and improved outcomes in patients with prolonged shock.

Conclusions:

• Peritoneal dialysis is a viable and effective treatment for severe metabolic alkalosis and electrolyte disorders, particularly when HD is inadequate.
• Customizable PD fluid composition allows for targeted correction of various acid-base and electrolyte abnormalities.
• The application of PD should be considered for a broader range of conditions beyond renal failure.