Prevalence, Location, and Determinants of Valvular Calcifications in Congolese Patients on Chronic Hemodialysis: A...

Area of Science:

• Nephrology
• Cardiology
• Public Health

Background:

• Valvular calcifications (VCs) are a significant cardiovascular complication in patients undergoing chronic hemodialysis (HD).
• VCs contribute to increased morbidity and mortality in this vulnerable population.
• Understanding the prevalence and risk factors of VCs in specific demographics, like Congolese HD patients, is crucial.

Purpose of the Study:

• To determine the prevalence and location of valvular calcifications (VCs) in Congolese patients on chronic hemodialysis (HD).
• To identify traditional and chronic kidney disease-specific risk factors associated with VCs in this patient group.
• To provide insights into cardiovascular health management for HD patients in Kinshasa.

Main Methods:

• An observational study was conducted across three HD centers in Kinshasa from March to August 2016.
• Sixty adult patients on maintenance HD for at least six months were recruited.
• Valvular calcifications were diagnosed via echocardiography, and risk factors were analyzed using multivariate analysis.

Main Results:

• Valvular calcifications were present in 38% of the studied patients.
• The most common locations for VCs were the aortic valve (64%) and mitral valve (23%).
• Independent risk factors identified included hypertension, age over 60, tobacco use, and hyperphosphatemia.

Conclusions:

• Valvular calcifications are a frequent finding in Congolese chronic HD patients, even at a relatively young age.
• The study highlights the association of VCs with both traditional cardiovascular risk factors and chronic kidney disease-specific factors like hyperphosphatemia.
• These findings underscore the need for targeted screening and management of VCs in HD populations in sub-Saharan Africa.