Hollingsworth, K G, Hodgson, T, Macgowan, G A et al. · Journal of internal medicine · 2012 · DOI
This study used advanced heart imaging (MRI) to look at how the hearts of people with ME/CFS work compared to healthy people. Researchers found that ME/CFS patients had smaller hearts with less blood volume, weaker pumping strength, and abnormal twisting and relaxation patterns. These heart changes may help explain why ME/CFS patients experience such severe fatigue and exercise intolerance.
This study provides objective cardiac imaging evidence of functional heart impairment in ME/CFS, moving beyond symptom reports to demonstrate measurable physiological abnormalities. Understanding these cardiac deficits is crucial for validating ME/CFS as a biomedically-based condition and may inform treatment strategies or prognosis assessment.
This study does not prove that cardiac dysfunction causes ME/CFS or that it is primary rather than a secondary consequence of the disease. It cannot establish whether these cardiac changes are progressive, reversible, or present in all ME/CFS patients. The findings are correlational and based on a small sample, so they cannot be generalized to the broader ME/CFS population without larger studies.
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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