Hypertension in kidney stone patients

Area of Science:

• Nephrology
• Cardiology
• Urology

Background:

• Arterial hypertension (HT) is a significant health concern.
• Kidney stone disease affects a substantial portion of the population.
• The relationship between kidney stones and HT requires further investigation.

Purpose of the Study:

• To investigate the prevalence of arterial hypertension in patients with a history of primary stone disease.
• To identify factors associated with HT in kidney stone formers.
• To compare HT prevalence across different types of kidney stones.

Main Methods:

• Cross-sectional study of 258 patients (171 male, 87 female) with primary stone disease.
• Prevalence of HT assessed and compared across stone types (calcium, uric acid, struvite).
• Discriminant analysis used to identify factors associated with HT, including stone composition, age, and body weight.

Main Results:

• Overall HT prevalence was 24.8%, with no significant gender difference.
• HT prevalence was significantly higher in uric acid (45.9%) and struvite (40.7%) stone formers compared to calcium stone formers (18.6%).
• Stone composition, rather than age or weight, was the primary factor associated with HT. Hypercalciuria was more prevalent in calcium stone formers but its link to HT was uncertain.

Conclusions:

• HT prevalence in kidney stone patients, particularly calcium stone formers, is similar to the general population.
• Uric acid and struvite stone formers exhibit a higher risk of HT, likely due to older age and associated metabolic abnormalities.
• Hypercalciuria's role as a direct link between HT and urolithiasis remains uncertain.