The world journal of biological psychiatry : the official journal of the World Federation of Societies of Biological Psychiatry · 2008
Nonlinear analysis of heart rate variability in patients with eating disorders.
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Vigo Daniel E, Castro Mariana N, Dörpinghaus Andrea, Weidema Hylke, Cardinali Daniel P, Siri Leonardo Nicola, Rovira Bernardo, Fahrer Rodolfo D, Nogués Martín, Leiguarda Ramón C, Guinjoan Salvador M
Аннотация
Patients with anorexia nervosa or bulimia nervosa often have signs of autonomic dysfunction potentially deleterious to the heart. The aim of this study was to ascertain the nonlinear properties of heart rate variability in patients with eating disorders. A group of 33 women with eating disorders (14 anorexia, 19 bulimia) and 19 healthy controls were included in the study. Conventional time- and frequency-domain heart rate variability measurements, along with nonlinear heart rate variability measurements including the short-term fractal scaling exponent alpha and approximate entropy (ApEn) were calculated. Anorexia nervosa patients exhibited decreased values of alpha, while bulimia nervosa patients had decreased values of ApEn. Low-frequency heart rate variability was decreased in patients with anorexia. In conclusion, these results are compatible with the view that a more severe alteration of cardiac autonomic function is present in anorexia than in bulimia.