Metabolic syndrome and urolithiasis: a case-control study.

Background The estimate for metabolic syndrome (MS) worldwide is above 20%; MS it has been linked to urolithiasis. Objective To determine the association between the components of MS as risk factors for urolithiasis in the adult population of Yucatan, Mexico. Method Case-control study with a sample size of 85 subjects per group, paired by age and sex; patients with urolithiasis (stones > 5 mm) and controls without urolithiasis. Diagnosis was verified by ultrasound. Blood pressure, weight, height, waist circumference, serum triglycerides, HDL cholesterol, glycemia, and urinalysis were determined. International Diabetes Federation criteria were used for the MS diagnosis. Subjects with kidney damage, endocrinopathies and consumption of steroid drugs were excluded. Descriptive statistics, association analysis and risk calculation were performed. Results One hundred and seventy subjects were included, 83.5% were women and 52.4% presented MS. Was observed an association between urolithiasis and MS (odds ratio [OR]: 2.7; 95% confidence interval [95% CI]: 1.4-5.1; p = 0.001), hypertriglyceridemia (OR: 1.9; 95% CI: 1.06-3.66; p = 0.021) and high blood pressure (OR: 2.5; 95% CI: 1.2-4.8; p = 0.004). The analysis showed that a higher quantity of MS components increases the risk of urolithiasis (p = 0.004). Conclusions MS increased in 2.7-fold the risk of urolithiasis. Hypertriglyceridemia and high blood pressure are MS components that increased the risk of urolithiasis.