J Cardiol. 2009 Aug;54(1):29-35. Epub 2009 Mar 28.
Cardiac function fluctuates during exacerbation and remission in young adults with chronic fatigue syndrome and "small heart".
Miwa K, Fujita M. Department of Internal Medicine, Nanto Family and Community Medical Center, 577 Matsubara, Nanto, Toyama 939-1518, Japan.
BACKGROUND: "Small heart syndrome", previously referred to as so-called "neurocirculatory asthenia" associated with a small heart shadow on the chest roentgenogram, is characterized by weakness or fatigue even after mild exertion, palpitation, dyspnea, and fainting, many of which resemble symptoms in patients with chronic fatigue syndrome (CFS).
METHODS AND RESULTS: The study population comprised 42 patients with CFS younger than 40 years of age. Cardiothoracic ratio was determined on the chest roentgenogram and echocardiographic examination was performed to evaluate both the cardiac chamber size and function. "Small heart" (cardiothoracic ratio
CONCLUSIONS: "Small heart" on the chest X-ray photograph was prevalently noted in CFS patients. Echocardiographic examination revealed that CFS patients with "small heart" had an actually small LV chamber and poor cardiac performance. Cardiac functional changes evaluated by repeated examinations appeared to be directly associated with the severity of their symptoms. Small heart syndrome with impaired cardiac function may contribute to the development of CFS through low cardiac output as a constitutional factor.
PMID: 19632517 [PubMed - in process]
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