The S T Segment and T Wave During the First Week of Life

The Effect of Proximal Electrode Placement of the Central Terminal on the Chest Lead Electrocardiogram in Newborn Infants

“…The mean amplitudes, especially those of R and T waves in our study, are lower than the corresponding mean voltages re ported e.g. by W a l sh [9,10] and Ziegler [11], The three chest leads were chosen for this study, because they reflect right-, mid-, and left-precordial electrocardiographic forces of the newborn infant. The proximal central terminal produced no statistically significant changes in the voltages of P, Q. S-T, and T. However, a clear although statistically not significant re duction of R and S wave voltages was caused by the proximal electrode placement.…”

Lack of Association of ST-T Wave Abnormalities to Congenital Heart Disease in Neonates

“…The incidence of STTW abnormalities in this study is similar to previously published data from Jedeikin et al and Walsh. 1,17 They noted that T waves persisted to be abnormal until 71-96 hours after birth in stressed neonates. Jedeikin et al found elevations in cardiac enzymes suggestive of ischemia in neonates with birth asphyxia.…”

“…They hypothesized that these abnormalities were likely related to a transient left ventricular ischemia related to transitional circulation in the neonate. The incidence of STTW abnormalities in this study is similar to previously published data from Jedeikin et al and Walsh . They noted that T waves persisted to be abnormal until 71–96 hours after birth in stressed neonates.…”

Evaluation of Some Electro- and Phonocardiographic Characteristics of the Newborn Infant

“…Besides the ductus murmur, transient in character, indicating the closure of the ductus arteriosus, the pronounced alterations in the central circulatory pattern in the newborn period are known to be as sociated with changes in the characteristics of the second heart sound as well as with some typical features in the precordial T-wave pattern. Although the literature pertaining to these cardiac signals is abundant and their occurrence well-documented [4,7,12,17,18,33,[35][36][37][38], their significance is a matter of discussion, and no truly conclusive in terpretation as to the hemodynamic events giving rise to them has as yet been put forward [17,23,38,65].…”