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[Physiopathology, exploration and treatment of calcium lithiasis]
P Bataille1, J M Achard, A Fournier
1Service de néphrologie, centre hospitalier, Boulogne-sur-Mer.
Insights
Identifying key risk factors like low urine output and high calcium levels is crucial for managing calcium urolithiasis. Treatment focuses on dietary changes and, if needed, medication to control metabolic imbalances.
Area of Science:
- Nephrology
- Urology
- Metabolic Disorders
Context:
- Calcium urolithiasis is a prevalent condition.
- Identifying and managing risk factors is essential for patient care.
- Idiopathic cases are common, necessitating a thorough metabolic evaluation.
Purpose:
- To outline the primary risk factors for calcium urolithiasis.
- To emphasize the importance of comprehensive metabolic assessment through 24-hour urine analysis.
- To detail dietary and pharmacological treatment strategies for calcium urolithiasis.
Summary:
- Key risk factors include low diuresis, hypercalciuria, hyperruricuria, alkaline urinary pH, hyperoxaluria, hypomagnesuria, and hypocitraturia.
- Evaluation involves 24-hour urine collection and dietary records to identify metabolic abnormalities.
- Treatment primarily involves dietary modifications such as increased fluid intake, normoclacic diet, and restriction of oxalate, carbohydrates, and alcohol. Medications like allopurinol, thiazides, and potassium citrate are considered when diet is insufficient.
Impact:
- Provides a framework for diagnosing and managing calcium urolithiasis.
- Highlights the significance of personalized dietary interventions based on metabolic profiling.
- Offers guidance on pharmacological adjuncts for refractory cases, improving patient outcomes.
Abstract:
The main risk factors for calcium urolithiasis that are clinically detectable are low diuresis, hypercalciuria, hyperruricuria, alkaline urinary pH, hyperoxaluria, hypomagnesuria, hypocitraturia. They should be evaluated, all the more precisely that the disease is active, under both the urological and metabolic points of view, using 24 hour urine collection made at home on a free diet with a dietary record. In the majority of the cases the calcic urolithiasis is idiopathic, i.e. not related to a cause of secondary hypercalciuria like primary hyperparathyroidism, or to a hyperroxaluria either primary or of digestive or toxic origin. Its treatment if mainly dietary with high fluid intake (diuresis greater than 2 1/24 h), normoclacic diet (800-1000h mh/24 h) with meat but not dairy product restriction, oxalate salts, carbohydrate and alcohol restriction. These dietary recommendations should be controlled by measuring the above cited parameters in the 24 hour urine samples and by measuring urea excretion which should not exceed 0.33 g/kg of body weight. When diet fails, drugs may be added mainly allopurinol, thiazides and potassium citrate.