Stone composition and vascular calcifications in patients with nephrolithiasis

Area of Science:

• Nephrology
• Cardiology
• Radiology

Background:

• Kidney stone disease is a known risk factor for cardiovascular outcomes.
• The specific association between kidney stone composition and cardiovascular risk remains unclear.
• Understanding this link may refine cardiovascular risk stratification.

Purpose of the Study:

• To investigate the association between kidney stone composition and abdominal aortic calcifications (AAC).
• To determine if specific stone compositions correlate with differential cardiovascular risk.
• To assess the role of stone composition in cardiovascular risk assessment.

Main Methods:

• Cross-sectional study analyzing data from 180 patients with stone composition analysis (Jan 2015 - May 2018).
• Linked stone analysis data with imaging database for abdominal CT scans.
• Quantified AAC from CT scans as the primary cardiovascular outcome.

Main Results:

• 60% of patients (108/180) had AAC.
• Calcium phosphate content in stones was directly associated with AAC after adjusting for age and gender (OR 1.25, p=0.045).
• Uric acid content showed different associations with patient demographics and health status.

Conclusions:

• A significant association exists between calcium phosphate stone composition and AAC.
• This suggests an elevated cardiovascular risk in patients with calcium phosphate kidney stones.
• Certain kidney stone subtypes warrant closer cardiovascular risk evaluation.