E2 ModeratePreliminaryPEM not requiredCross-SectionalPeer-reviewedReviewed
Standard · 3 min
Chronic fatigue syndrome in women assessed with combined cardiac magnetic resonance imaging.
Olimulder, M A G M, Galjee, M A, Wagenaar, L J et al. · Netherlands heart journal : monthly journal of the Netherlands Society of Cardiology and the Netherlands Heart Foundation · 2016 · DOI
Quick Summary
This study used advanced heart imaging (MRI scans) to examine the hearts of 12 women with ME/CFS and compared them to 36 healthy women. The researchers found that women with ME/CFS had smaller hearts and mildly weaker heart function than the healthy controls. Some ME/CFS patients also showed signs of scarring in the heart muscle, which was not seen in any of the healthy controls.
Why It Matters
This is the first contrast-enhanced CMR study to systematically assess cardiac tissue characterization in ME/CFS, providing objective evidence of potential structural and functional cardiac involvement. The finding of myocardial fibrosis in some patients suggests cardiac pathology may contribute to symptoms and warrants further investigation of cardiac mechanisms in ME/CFS.
Observed Findings
Left ventricular ejection fraction was significantly lower in ME/CFS patients (57.9%) compared to controls (63.7%)
Multiple cardiac dimensions were reduced in ME/CFS patients, including end-diastolic diameter, end-diastolic volume, and stroke volume
Wall motion abnormalities were observed in 4 out of 12 ME/CFS patients but in none of the 36 controls
Contrast-enhanced imaging revealed myocardial fibrosis (scarring) in 3 ME/CFS patients but in no controls
No increased signal intensity on T2-weighted imaging was observed in either patients or controls, suggesting absence of acute myocardial inflammation
Inferred Conclusions
ME/CFS is associated with reduced left ventricular dimensions and mildly reduced cardiac function compared to healthy controls
Myocardial fibrosis detected in some ME/CFS patients suggests chronic myocardial damage that may warrant clinical monitoring
Cardiac magnetic resonance imaging should be considered part of scientific and clinical assessment protocols for ME/CFS patients
Remaining Questions
What is the prevalence of these cardiac abnormalities across the broader ME/CFS patient population?
Does the degree of cardiac involvement correlate with symptom severity or disease duration?
What This Study Does Not Prove
This small cross-sectional study cannot establish causation or determine whether cardiac changes are primary to ME/CFS pathophysiology or secondary consequences. The findings in 12 patients do not represent all ME/CFS populations and cannot predict clinical outcomes or the prevalence of these cardiac changes across the ME/CFS patient population.
Tags
Symptom:Fatigue
Biomarker:Neuroimaging
Method Flag:Weak Case DefinitionSmall SampleExploratory OnlySex-Stratified
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
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