Noninvasive recording of the His bundle electrogram in neonates.
Twenty-seven normal, nonsedated neonates had high-resolution electrocardiography performed during the first four days of life. Using high amplification, analogue and digital filters, and signal averaging, easily defined His bundle deflections of 0.75-7.75 (mean 2.5) microV were detected in 25 (92.6%) of the 27 babies. The PH interval was 60-105 (mean 83) ms and the HV interval 10-25 (mean 17) ms. Surface His bundle electrocardiography is easily performed in the neonate and, as might be predicted, conduction intervals are considerably shorter than those seen in older age groups.
D002036:Bundle of His / Q000502:physiology*; D003201:Computers; D004562:Electrocardiography / Q000295:instrumentation / Q000379:methods*; D005260:Female; D006329:Heart Conduction System / Q000502:physiology*; D006801:Humans; D007231:Infant, Newborn; D008297:Male