Jedeikin R, Primhak A, Shennan A T, Swyer P R, Rowe R D
Arch Dis Child. 1983 Aug;58(8):605-11. doi: 10.1136/adc.58.8.605.
Serial changes in T-wave vector and polarity were assessed in 162 electrocardiograms, 117 from 44 healthy term neonates and 45 from 17 stressed neonates. Records were taken at 5 to 8 hours, 24 to 33 hours, and 71 to 96 hours after birth. Sequential changes in both T-wave amplitude and frontal and horizontal axes were found in both groups. A lag period was noted between healthy and stressed infants when comparing changes in T-wave amplitude, with greater flattening of T-waves for longer periods of time after birth in the stressed group. The normal changes in T-wave axis over time in the horizontal and frontal planes showed a similar lag in the stressed group. Alterations of T-wave amplitude and axis alone may be markers of myocardial ischaemia in neonates but are only reliable signs after the first 24 hours of life.
对162份心电图中的T波向量和极性的系列变化进行了评估，其中117份来自44名足月健康新生儿，45份来自17名应激新生儿。记录在出生后5至8小时、24至33小时和71至96小时进行。两组均发现T波振幅以及额面和水平面轴的顺序变化。在比较T波振幅变化时，发现健康婴儿和应激婴儿之间存在延迟期，应激组出生后较长时间内T波更明显地变平。应激组在水平面和额面平面上T波轴随时间的正常变化也显示出类似的延迟。仅T波振幅和轴的改变可能是新生儿心肌缺血的标志，但仅在出生后24小时后才是可靠的征象。
