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Intoxication with Sodium valproate (SVP) is a growing concern owing to its increased use and availability. SVP intoxication may result in cerebral, cardiovascular, respiratory, gastrointestinal, and hematological complications. However, SVP use does not seem to be associated with significant cardiovascular effects and electrocardiographic (ECG) abnormalities. Thus, we aimed to describe SVP intoxication in a series of patients by focusing on ECG findings. Method: Between February 2011 and February 2012, we enrolled all consecutive patients who referred to Loghman-Hakim Poison Hospital complaining of poisoning and subsequently diagnosed with SVP intoxication. For each patient, we recorded age, sex, and history of SVP use, including indication for use, number of pills ingested, time of ingestion, and total daily dose. We also inquired whether the patient took SVP chronically with or without prescription and whether the ingestion was intentional (suicide attempt). Result: A total of 194 patients with SVP poisoning at a mean ± SD age of 28.91 ± 11.24 years and a male-tofemale ratio of 1:2.8 were admitted. Regarding cardiac presentations, all the subjects were in sinus rhythm, and 1.5% experienced PR prolongation, 16.8% QTc widening, and 0.5% QRS widening. There were no significant correlations between ECG abnormalities and the ingested dose, plasma level of SVP, admission duration, time to reach the hospital, and PH. Conclusion: The possibility of QT prolongation due to an overdose of the SVP anticonvulsant drug requires particular consideration.

Is there a Correlation between Electrocardiographic Changes and Sodium Valproate Toxicity? An Investigation of 196 Cases