Left Ventricular Deformation in Patients with Connective Tissue Disease: Evaluated by 3.0T Cardiac Magnetic Resonance

Jin Wang1, Ke Shi1, Hua-Yan Xu2

  • 1Department of Radiology, West China Hospital, Sichuan University, 37# Guo Xue Xiang, Chengdu, Sichuan, 610041, China.

Scientific Reports
|December 1, 2019
PubMed

Insights

Connective tissue disease (CTD) patients exhibit impaired left ventricular (LV) myocardial strain, even with normal ejection fraction. Differences in LV deformation exist between idiopathic inflammatory myopathy (IIM) and non-IIM subgroups.

Area of Science:

  • Cardiology
  • Rheumatology
  • Medical Imaging

Background:

  • Connective tissue diseases (CTD) can affect cardiac function.
  • Left ventricular (LV) myocardial strain assessment provides insights into subclinical cardiac dysfunction.

Purpose of the Study:

  • To evaluate LV myocardial strain in CTD patients.
  • To compare LV deformation between idiopathic inflammatory myopathy (IIM) and non-IIM subgroups.
  • To correlate strain parameters with clinical markers.

Main Methods:

  • Cardiac magnetic resonance imaging (MRI) was used to assess LV function and strain in 98 CTD patients (56 IIM, 42 non-IIM) and 30 controls.
  • Global and regional peak strain (PS) in radial, circumferential, and longitudinal directions were measured.
  • Pearson's correlation analysis was performed.

Main Results:

  • CTD patients demonstrated preserved LV ejection fraction but significantly reduced global and regional LV strain in all directions.
  • IIM patients showed reduced global longitudinal PS (GLPS) and apical longitudinal PS.
  • Non-IIM patients exhibited decreased strain parameters, generally lower than in IIM patients, except for GLPS and apical longitudinal PS.

Conclusions:

  • CTD patients exhibit abnormal LV deformation despite preserved LV ejection fraction.
  • LV deformation impairment differs between IIM and non-IIM patients.
  • Myocardial strain analysis is valuable for detecting early cardiac changes in CTD.