Microprocessor based waveform analysis of the fetal electrocardiogram during labor

摘要: An increase in T wave amplitude of the fetal ECG (FECG) has experimentally been correlated to elevated catecholamine levels and myocardial glycogenolysis. The FECG changes have also described during human delivery. present aim was investigate whether these could be reproduced an easily handled real time microprocessor system, correlate them biochemical clinical data. During 40 deliveries signal transferred a microcomputer system for averaging FECG. There high capacity reproduce ST waveform though procedure reduced QRS magnitude by 10%. With normal umbilical artery pH (greater than or equal 7.25) highest T/QRS ratios recorded each delivery 0.26 +/- 0.19 (mean S.D.). lowered (less increased 0.33 0.10 (P less 0.02). A similar difference between two groups seen when from last hour before birth were compared; 0.13 0.08 0.18 0.05, respectively 0.01). Changes with greater 0.30, segment alterations, negative waves appeared 40% deliveries, however, 30% short standing 30 min). Intermediate CTG at least min occurred 41% pattern classified as abnormal 18%. Using scalp electrode source, analysis add further information routine recording on condition