Abstract
Central precocious puberty is treated with long-acting GnRH analogues. Some adult patients undergoing GnRHa treatment experienced prolonged QT syndrome, which is associated with an increased risk of serious cardiac events such as myocardial infarction, stroke, arrhythmias, and sudden cardiac death. Seventy-four patients, aged between 5 and 11 years and diagnosed with central precocious puberty but with no other concomitant disease or medication use, underwent electrocardiogram assessment. They had been receiving 3.75 mg leuprolide acetate (Lucrin® Depot) injections every 28 days for at least three months. The electrocardiograms of all patients showed a QTc interval within normal limits, consistent with the data of healthy Turkish children of the same age and gender. No other pathological physical examination or ECG findings were observed. Furthermore, there was no significant difference in QTc interval in relation to age, anthropometric data, or the duration or cumulative dose of the treatment. The study found no correlation between QTc interval values and age, treatment duration, total cumulative dose, and anthropometric data. The findings suggest that cardiovascular adverse events associated with GnRHa may be related to age and other underlying physiopathological conditions rather than the drug.
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