Open AccessPrevalence of metabolic abnormalities in patients with urolithiasis in Kinshasa, the Democratic Republic of Congo
Author(s) -
Pablo Kuntima Diasiama Diangienda,
Dieudonné Molamba Moningo,
Ernest Kiswaya Sumaili,
Alain Ngoma Mayindu,
Augustin Monga Lembe Punga-Maole,
JeanPhilippe Haymann,
Michel Daudon
Publication year - 2021
Publication title -
the pan african medical journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.287
H-Index - 30
ISSN - 1937-8688
DOI - 10.11604/pamj.2021.40.75.28349
Subject(s) - medicine , uric acid , urine , creatinine , diuresis , urinary system , population , urology , gastroenterology , endocrinology , renal function , environmental health
metabolic abnormalities are key factors in urolithiasis patients because they can be modified to prevent the risk of urinary stones. The objectives of this study were to estimate the frequency of metabolic abnormalities in the urine of patients with urolithiasis and to determine their possible link with the chemical composition of stones. Methods we conducted a cross-sectional study evaluating 73 patients referred for urolithiasis in 8 clinics in Kinshasa, between January 2017 and September 2019. Twenty four-hour or early morning urine were collected and analyzed in the Tenon Hospital in Paris. Parameters analyzed included pH, specific gravity, creatinine, uric acid, calcium, phosphate, oxalate, citrate and magnesium. Chi square test or chi-square likelihood-ratio and student's t test were used as statistical tests. Results overall, 89% (n=65) of patients with lithiasis had metabolic abnormalities. Mean (SD) age of patients was 47.0 (14.2) years with male to female ratio of 1.6: 1. The mean (SD) 24-hour diuresis was 1836.4 (1216.9) ml; the mean (SD) urine density was 1.018 (0.007); and the mean (SD) pH was 6.1(0.8). Hypocitraturia was the most frequently observed metabolic abnormality and was found in 76.7% patients. Other significant metabolic abnormalities were low magnesuria (35.6%), hyperoxaluria (11%), and low sulphaturia (74%). Whewellite (73.5%) was the main chemical component. The mean pH was higher in patients with carbapatite and struvite stones (p=0.031). Conclusion this study suggests that inadequate diuresis and hypocitraturia were important lithogenic factors. The population should be encouraged to increase water intake to limit the frequency of urine super saturation with crystals.