Coronary volume to left ventricular mass ratio in patients with diabetes mellitus

Jurrien H Kuneman1, Mohammed El Mahdiui1, Alexander R van Rosendael1

  • 1Department of Cardiology, Leiden University Medical Center, Leiden, the Netherlands.

Insights

Diabetic patients have a significantly lower coronary volume to left ventricular mass (V/M) ratio, indicating potential vascular imbalance. This finding persists even when accounting for coronary artery disease severity, suggesting diabetes impacts coronary vasculature independently.

Area of Science:

  • Cardiology
  • Diabetology
  • Medical Imaging

Background:

  • Diabetes mellitus is a significant risk factor for coronary artery disease (CAD).
  • The coronary volume to left ventricular mass (V/M) ratio is an emerging parameter assessing the balance between coronary vasculature and myocardial mass.
  • Understanding V/M ratio in diabetic patients is crucial for evaluating CAD risk.

Purpose of the Study:

  • To investigate the V/M ratio derived from coronary computed tomography angiography (CCTA) in patients with diabetes.
  • To compare the V/M ratio between diabetic and non-diabetic individuals.

Main Methods:

  • Utilized data from the ADVANCE registry, including patients with suspected CAD and known diabetic status.
  • Analyzed coronary artery volume and left ventricular myocardial mass from CCTA.
  • Calculated and compared the V/M ratio between diabetic and non-diabetic patient groups.

Main Results:

  • Patients with diabetes had a significantly lower coronary volume (2850 mm³ vs. 3040 mm³) but comparable myocardial mass (122 g vs. 122 g) compared to non-diabetics.
  • The V/M ratio was significantly lower in diabetic patients (23.9 mm³/g vs. 25.7 mm³/g).
  • This reduction in V/M ratio was observed in both obstructive and non-obstructive CAD subgroups among diabetic patients.

Conclusions:

  • Diabetic patients exhibit a significantly reduced V/M ratio compared to non-diabetic individuals.
  • The lower V/M ratio in diabetes is evident even after adjusting for obstructive coronary stenosis.
  • Further research is warranted to determine the clinical significance of this reduced V/M ratio in diabetic patients.
Abstract

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