Nonculprit coronary plaque characteristics of chronic kidney disease

Koji Kato1, Taishi Yonetsu, Haibo Jia

  • 1Cardiology Division, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.

Insights

Patients with chronic kidney disease (CKD) exhibit more vulnerable coronary plaques, characterized by larger lipid content and increased calcification and disruption. Lower estimated glomerular filtration rate is a key risk factor for these concerning plaque characteristics.

Area of Science:

  • Cardiology
  • Nephrology
  • Vascular Biology

Background:

  • Chronic kidney disease (CKD) is a known risk factor for atherosclerosis and cardiovascular disease.
  • Understanding coronary plaque characteristics in CKD patients is crucial for risk stratification.

Purpose of the Study:

  • To compare coronary plaque characteristics between patients with and without CKD using optical coherence tomography (OCT).

Main Methods:

  • Analysis of 463 nonculprit coronary plaques from 287 patients in the MGH OCT registry.
  • CKD defined as estimated glomerular filtration rate <60 mL/min per 1.73 m².
  • Comparison of plaque features including lipid index, fibrous cap thickness, calcification, cholesterol crystals, and plaque disruption between CKD and non-CKD groups.

Main Results:

  • CKD plaques showed a significantly larger lipid index compared to non-CKD plaques (1716.1±1116.2 mm° vs. 1248.4±782.8 mm°, P=0.003).
  • Higher prevalence of calcification (50.8% vs. 34.8%, P=0.041), cholesterol crystals (23.0% vs. 11.2%, P=0.048), and plaque disruption (13.1% vs. 5.5%, P=0.049) were observed in CKD patients.
  • Lower estimated glomerular filtration rate and diabetes mellitus were independent predictors of a larger lipid index.

Conclusions:

  • CKD patients present with more complex coronary atherosclerotic plaques, including larger lipid pools and increased plaque instability markers.
  • Lower estimated glomerular filtration rate is an independent risk factor associated with adverse coronary plaque morphology in CKD.
Abstract

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