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Revista Colombiana de Psiquiatría

versão impressa ISSN 0034-7450

Resumo

VARGAS UPEGUI, Cristian  e  GOMEZ, Juliana. Electrocardiographic abnormalities in anorexia nervosa: a critical review of the literature. rev.colomb.psiquiatr. [online]. 2015, vol.44, n.1, pp.33-40. ISSN 0034-7450.  http://dx.doi.org/10.1016/j.rcp.2014.09.006.

Background: Anorexia nervosa is an eating disorder in which cardiac arrhythmias and sudden death are frequent causes of mortality, which makes electrocardiographic monitoring indispensable in these patients. There are many suggestive findings but results are contradictory, making a critical review of the scientific literature is necessary. Methods: The most relevant studies on electrocardiographic (EKG) changes in patients with AN, found in PubMed from 1974 to February 2014, were reviewed using the MeSH terms: eating disorders, nervosa anorexia, sinus bradycardia, QT prolongation, QT dispersion, electrocardio graphy, EKG, and electrocardiogram. Findings and discussion: The two most common EKG findings reported in the literature are sinus bradycardia and changes in depolarization, as shown by prolongation and increased dispersion of the QT interval. Electrolyte disturbances seem to be the cause of these disturbances in some patients, but other reasons are also discussed in detail, such as QRS right axis deviation, disturbances of heart rate variability, low R wave voltage in V6, amplitude decrease of the QRS and T wave, and QRS prolongation. The majority of authors report that these changes are reversible after treatment of AN. Conclusions: These findings support the need for initial and follow-up EKGs in patients with AN and for early diagnosis and treatment of cardiovascular disturbances that are associated with morbidity and mortality. They also support the need for the rational use of psychop harmacology, and that does not increase the risk of arrhythmias and sudden death in these patients.

Palavras-chave : Anorexia nervosa; Sinus bradycardia; QT prolongation; QT dispersion; Electrocardiography.

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