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Aortic calcification in haemodialysis patients with diabetes mellitus

Hiromichi Taniwaki1, Eiji Ishimura, Tsutomu Tabata

  • 1Inoue Hospital, Department of Nephrology, Osaka City University Graduate School of Medicine, 1-4-3, Asahi-machi, Abeno-ku, Osaka 545-8585, Japan.

Nephrology, Dialysis, Transplantation : Official Publication of the European Dialysis and Transplant Association - European Renal Association
|August 4, 2005
PubMed

Insights

Diabetic hemodialysis patients show more advanced aortic calcification than non-diabetics, even with shorter dialysis duration. This calcification may stem from diabetes itself, not just mineral metabolism disorders.

Area of Science:

  • Nephrology
  • Cardiovascular Medicine
  • Diabetology

Background:

  • Vascular calcification is a known complication in hemodialysis patients, often linked to metabolic disorders like hyperphosphatemia.
  • The specific contribution of these disorders to aortic calcification in diabetic hemodialysis patients remains unclear.

Purpose of the Study:

  • To investigate risk factors for aortic calcification in a large cohort of hemodialysis patients.
  • To compare these risk factors between diabetic and non-diabetic individuals undergoing hemodialysis.

Main Methods:

  • A cohort of 667 maintenance hemodialysis patients (184 diabetic, 483 non-diabetic) was studied.
  • Aortic calcification was quantified using computed tomography, calculating an aortic calcification index (ACI).

Main Results:

  • Diabetic patients exhibited significantly higher ACI than non-diabetic patients (57.3% vs 44.8%), despite shorter dialysis vintage.
  • Diabetes was identified as an independent risk factor for increased ACI.
  • While age, blood pressure, smoking, and dialysis vintage were common risk factors, serum phosphate was not significantly associated with ACI in diabetics, unlike in non-diabetics.

Conclusions:

  • Diabetic hemodialysis patients present with more severe aortic calcification, irrespective of dialysis duration.
  • The findings suggest that metabolic abnormalities inherent to diabetes, rather than solely mineral metabolism disorders, drive aortic calcification in this population.
  • Aortic calcification may be present even prior to initiating hemodialysis in diabetic patients.
Abstract

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