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Investigating Aortic Valve Calcification via Isolation and Culture of T Lymphocytes using Feeder Cells from Irradiated Buffy Coat
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Investigating Aortic Valve Calcification via Isolation and Culture of T Lymphocytes using Feeder Cells from Irradiated Buffy Coat

Published on: February 4, 2021

Hypercholesterolemia is a risk factor for bioprosthetic valve calcification and explantation

Robert Saeid Farivar1, Lawrence H Cohn

  • 1Division of Cardiac Surgery, Department of Surgery, Brigham & Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.

The Journal of Thoracic and Cardiovascular Surgery
|October 21, 2003
PubMed

Insights

High cholesterol may increase the risk of bioprosthetic valve calcification and the need for valve replacement. This study found a link between elevated serum cholesterol and explanted valves.

Area of Science:

  • Cardiovascular Medicine
  • Biomaterials Science
  • Pathology

Background:

  • Bioprosthetic valve calcification shares pathophysiologic similarities with atherosclerosis.
  • Understanding risk factors for calcification is crucial for improving bioprosthetic valve longevity.

Purpose of the Study:

  • To investigate the association between atherosclerosis risk factors and calcification and dysfunction in explanted bioprosthetic valves.
  • To determine if elevated serum cholesterol levels are linked to bioprosthetic valve calcification requiring explantation.

Main Methods:

  • Retrospective cohort study of 144 patients with explanted bioprosthetic valves, assessing calcification and serum cholesterol.
  • Case-control analysis comparing 66 explanted valves with 66 matched controls.
  • Univariate and stepwise multiple regression analyses were performed.

Main Results:

  • Univariate analysis identified cholesterol, younger age at implantation, and coronary artery disease as linked to calcification.
  • Stepwise regression revealed mean serum cholesterol level as the sole significant predictor of calcification (P =.02).
  • Patients with explanted valves had significantly higher mean serum cholesterol (189 vs 163 mg/dL, P <.0001). Odds ratio for explantation was 3.9 for cholesterol > 200 mg/dL.

Conclusions:

  • Elevated serum cholesterol level is a significant risk factor for bioprosthetic valve calcification.
  • Higher cholesterol levels are associated with an increased likelihood of requiring bioprosthetic valve explantation.
  • These findings suggest cholesterol management may be important in preserving bioprosthetic valve function.
Abstract

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