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[Calculous renal failure and pregnancy]
Séverine Forget1, Christophe Avances, Olivier Dubon
1Service d'Urologie-Andrologie, Service de Gynécologie-Obstétrique, Hôpital Caremeau, 30900 Nimes.
Summary
Sulfadiazine can cause obstructive renal failure in pregnant women, leading to kidney damage. Prevention involves adequate hydration and urine alkalinization during treatment for toxoplasmosis.
Area of Science:
- Obstetrics
- Nephrology
- Pharmacology
Background:
- Obstructive renal failure is a rare pregnancy complication.
- Most cases result from extrinsic compression.
- Intraluminal precipitation of sulfadiazine is a less common cause.
Observation:
- Sulfadiazine precipitation can obstruct the renal tract.
- Diagnosis involves clinical history, ultrasound, and urine analysis.
- Urine analysis reveals characteristic yellowish crystals in a wheat sheaf formation.
Findings:
- Sulfadiazine crystallization causes renal tract obstruction.
- Ultrasound shows radiolucent stones.
- Urine pellet analysis is key for diagnosis.
Implications:
- Urinary drainage via double J stent or nephrotomy is necessary if symptoms persist.
- Preventative measures include adequate water intake and urine alkalinization.
- Early intervention is crucial to prevent severe renal complications.