Normal growth and intravascular volume status with good metabolic control during peritoneal dialysis in infancy

Area of Science:

• Pediatric Nephrology
• Renal Replacement Therapy
• Critical Care Medicine

Background:

• Children under 2 years represent the most challenging population for peritoneal dialysis (PD).
• Inferior growth and difficulties in maintaining euvolemia, particularly in anuric patients, pose significant clinical hurdles.
• Current methods for assessing intravascular volume status are limited.

Purpose of the Study:

• To evaluate the efficacy of peritoneal dialysis in managing uremia, nutrition, and growth in infants and toddlers.
• To assess the challenges in monitoring intravascular volume status in this young patient cohort.
• To compare growth outcomes with midparental height and identify areas for improved management.

Main Methods:

• Prospective study of 21 patients under 2 years of age initiating PD.
• Monitoring of uremia parameters, nutritional status, and growth.
• Assessment of intravascular volume using blood pressure, echocardiography, and N-terminal atrial natriuretic peptide levels.
• Comparison of growth against midparental height.

Main Results:

• Good metabolic control was achieved, with mean weekly urea Kt/V of 3.38 and creatinine clearance of 49 L/week/m(2).
• Catch-up growth was observed in 57% of patients, but they did not reach their midparental height by the study's end.
• Hypertension was noted in 43%, though left ventricular hypertrophy decreased during the study.

Conclusions:

• Peritoneal dialysis can achieve favorable metabolic control and support growth in young children.
• Accurate assessment of intravascular volume requires multiple monitoring tools.
• Management of calcium-phosphorus balance remains a significant challenge in pediatric PD patients.