Long-term use of a "stable" bicarbonate containing dialysate

Area of Science:

• Nephrology
• Renal Replacement Therapy
• Biochemistry

Background:

• Traditional hemodialysis often faces challenges in effectively correcting acid-base balance.
• The use of bicarbonate in dialysate requires a stable preparation method for clinical application.
• Short-term dialysis schedules necessitate efficient metabolic correction strategies.

Purpose of the Study:

• To present a novel method for preparing stable bicarbonate dialysate.
• To evaluate the clinical tolerance and efficacy of this bicarbonate dialysate in patients undergoing short-term hemodialysis.
• To assess the impact on acid-base balance and electrolyte levels.

Main Methods:

• Developed a method for preparing stable dialysate with 35 mEq/l bicarbonate.
• Administered the dialysate to 4 patients over 4 months to 1 year using a short-term (2-2.5 hours), recirculated (20-40L) dialysis schedule.
• Monitored clinical tolerance, ultrafiltration rates, acid-base status (PCO2, PO2), and potassium levels.

Main Results:

• Excellent clinical tolerance observed, even with high dehydration rates in sensitive patients.
• Superior correction of acidosis compared to traditional dialysis, particularly notable given the short dialysis duration.
• No significant changes in PCO2 or PO2 observed during bicarbonate dialysis; normalization of pre-dialytic potassiemia achieved despite reduced net potassium removal.

Conclusions:

• The developed stable bicarbonate dialysate is well-tolerated and highly effective for short-term hemodialysis.
• Bicarbonate dialysis offers significant advantages in correcting acidosis and managing electrolyte balance.
• This method represents a promising advancement in optimizing hemodialysis therapy.