Urinary Lithiases: Epidemiological, Clinical and Therapeutic Aspects of 164 Cases at Sheikh Zayed Hospital in Nouakchott—Mauritania

Urinary lithiases occupy an important position with respect to urological activities in our department. In our Sahel region, lithiasic pathology represents 40% in urology in Senegal 1. In Mauritania, we did not find a study evaluating the prevalence of this pathology. The frequency and gravity are variable. The objective of the study was to report the clinical profile and the results of management of urinary lithiasis in our environment. Materials and Methods: We conducted a retrospective, descriptive study spanning over two years (April 2015 to March 2017) in the urology department of Sheikh Zayed Hospital in Nouakchott. All patients operated for urinary lithiasis during this period were included in the study. The operative techniques used were semi rigid ureteroscopy, extra corporeal lithotrity, open surgery. Our center did not have flexible ureteroscopy and percutaneous nephrolithotomy. The indications were lithotrity for calculations lower than 20 mm of low density. Biger than 20 mm were by open surgery. Semi rigid ureteroscopy for distal ureteral calculi. Medical treatment or monitoring for non-obstructive calculi is less than 7 mm. Urine drainage by jj probe or nephrostomy are performed. We excluded all patients with lithiasis for the medical treatment. The result was good when absence of lithiasis residues was less than 7 mm and removal of the obstruction. Results: A total of 164 patients were found. The average age was 41 years, and F/M ratio was 1/10. Considering geographical origin, 82% of patients came from rural areas. The presenting complaint was mainly Lower Urinary Tract Symptoms (56%) and Renal Colicky Pain (31%). The bladder and kidneys were the most common (respective 45% and 35%) sites of stone location. Bilateral stones were 18%. Staghorn stones constituted 6% of the cases. Non steroidal anti-inflammatory treatment was administered in 82% of cases, while antibiotic therapy was administered in 32% of cases. Complications occurred in open surgery about 11% like parietal infection and residual stones. 0.6% of ESWL got uretere obstruction that needed jj catheter. 4% of cystolithotomy had infection. Conclusion: Urinary lithiasis often consults at the complication stage. Minimally invasive techniques are limited in our service and offer less complication.