Single-centre retrospective analysis of the best timing for the QTc interval length assessment in neonates.

Objective: To evaluate the best timing for ECG screening in order to diagnose long QT syndrome and lower, at the same time, the false positives.

Design: We retrospectively evaluated the corrected QT (QTc) interval in the clinical reports of the ECG screening performed, as per internal protocol.

Setting: An outpatient setting in our Unit of Neonatology and Pediatrics, Santa Maria Goretti Hospital in Latina, Italy.