Electrocardiograms of 260 healthy newborns during the first postnatal hour demonstrated rare physiologic variations, including right axis deviation in 1.5% and left axis deviation in 1.2%.
This study provides normative electrocardiographic data for healthy neonates in the first hour of life, demonstrating that physiologic variations such as axis deviations occur at low frequencies.
Absolute Event Rate: 0% vs 0%
Background: Few studies have reported electrocardiogram data collected during the neonatal period. The aim of this study was to evaluate electrocardiographic parameters in healthy neonates during the first postnatal hour. Methods: Electrocardiogram samples taken during the first hour of life from newborns born at our hospital were analyzed in this prospective observational study. Demographic data and possible electrocardiogram changes were studied. The results were statistically analyzed. Results: A total of 260 patients were included during the study period. Among these, 50% were male (n = 130), the mean gestational age was 38.1 ± 1.4 weeks, and the mean birth weight was 3.2 ± 1.4 kg. In the electrocardiograms obtained, low atrial rhythm was detected in 0.3% of the patients (n = 1). Right axis deviation was observed in 1.5% of the patients (n = 4), and left axis deviation was observed in 1.2% of the patients (n = 3). An abnormal P-axis was found in one patient (0.3%), and an abnormal QRS-T angle was found in one patient (0.3%). No statistically significant differences were observed in the other parameters. Conclusion: Physiologic electrocardiographic findings can be observed during the first postnatal hour. Further studies are needed to clarify the interpretation of the electrocardiogram findings.
Acar et al. (Tue,) reported a other. Electrocardiograms of 260 healthy newborns during the first postnatal hour demonstrated rare physiologic variations, including right axis deviation in 1.5% and left axis deviation in 1.2%.