Why the study?
Sudden cardiac death in eating disorders is associated with QTc interval prolongation, but the significance of extrinsic factors versus an eating disorder alone remains controversial.
Are psychotropic drug use and electrolyte abnormalities associated with QTc prolongation in paediatric patients with eating disorders?
Are psychotropic drug use and electrolyte abnormalities associated with QTc prolongation in paediatric patients with eating disorders?
In pediatric patients with eating disorders, QTc prolongation appears to be driven by psychotropic medication use rather than the eating disorder itself or electrolyte abnormalities.
Psychotropics may warrant prioritized QTc monitoring over electrolyte correction in pediatric eating disorders; leaves open causal confirmation via prospective trials.
Background: Eating disorders (EDs) often develop during adolescence with high mortality rates. Sudden cardiac death in these patients has been associated with corrected QT (QTc) interval prolongation. The significance of extrinsic factors on QTc prolongation in populations with EDs remains controversial. This study assessed the relationship between QTc prolongation in paediatric patients with EDs and extrinsic factors, such as QTc-prolonging medications and electrolyte abnormalities to investigate whether an ED alone is associated with an increased prevalence of QTc prolongation. Methods: Electrocardiograms, electrolytes, and psychopharmaceutical usage were retrospectively analysed from the charts of 264 paediatric patients with EDs. Descriptive statistics were used to assess QTc prolongation and its relationship with electrolyte abnormalities and psychopharmaceuticals. Results: = 0.08) levels did not significantly differ between those with normal and abnormal QTc intervals. Conclusions: This study suggests that EDs alone may not prolong QTc intervals in paediatric patients with EDs, but psychotropics appear to be a salient external factor in QTc prolongation.
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Benayon et al. (2023) studied this question.
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