Related Experiment Videos
Risk factors for calculus formation in patients with renal transplants
J M Harper1, C T Samuell, P C Hallson
1St Peter's Hospital, Department of Nephrology, London, UK.
British Journal of Urology
|August 1, 1994
Summary
Patients with functioning renal transplants who develop kidney stones often have concentrated, alkaline urine with high uric acid and calcium excretion. Metabolic issues like hypocitraturia and hyperparathyroidism are common risk factors.
Area of Science:
- Nephrology
- Urology
- Transplantation Medicine
Background:
- Renal calculi can complicate the management of patients with functioning renal transplants.
- Understanding risk factors is crucial for preventing stone formation in this vulnerable population.
Purpose of the Study:
- To identify risk factors associated with renal stone formation in patients with functioning renal transplants.
Main Methods:
- A case-control study comparing five patients with transplant-related renal calculi to 41 control transplant patients without stones.
- Analysis of urine volume, concentration, pH, and excretion of various substances, alongside metabolic assessments.
Main Results:
- Stone formers exhibited smaller urine volumes, higher urine concentration and alkalinity, and increased urinary uric acid and calcium excretion.
- Common metabolic abnormalities included hypocitraturia (75%), hyperparathyroidism (36%), hypophosphataemia (24%), and hypercalcaemia (10%).
- Urinary tract infections were prevalent (50%) in stone-forming patients.
Conclusions:
- Renal stone formation in transplant recipients is multifactorial, involving urine composition, metabolic disturbances, and infections.
- These findings highlight the need for tailored prevention and management strategies for kidney stones in renal transplant patients.