title: [The pre-ejection-period of the humen fetal heart: significance of base-line alterations in perinatal period].
abstract: The Pre-ejection period of the cardiac cycle, fetal heart rate and uterine contractions were monitored in a series of 115 unselected fetus sub partu. A new one-line technique permits a continuous registration of PEP patterns simultaneously with the CTG. Any change in base-line of the PEP war related to heart rate, acid-base-status and gestational age. The average value of PEP in fetus was 72,93 +/- 7,9 msec. The base-line of PEP increased paralelly with gestational age of fetus and decreased rapidly beyond normal values after the 41. week of gestation. Within normal values alterations in base-line of the PEP were negativly correlated to alterations in base-line of the heart rate. Abnormal high and low base-lines of the PEP were observed in fetal acidosis, hypoxemia, and in uteroplacental insufficiency. The prolonging or shortening of the PEP base-line seems to signalize an acute injury of the utero-feto-placental unit in perinatal period.
mesh_terms: D000136:Acid-Base Equilibrium; D001724:Birth Weight; D002302:Cardiac Output; D005260:Female; D005318:Fetal Heart / Q000502:physiology*; D005865:Gestational Age; D006334:Heart Function Tests; D006339:Heart Rate; D006801:Humans; D011247:Pregnancy
vernacular_title: Die Pre-Ejection-Period des menschlichen fetalen Herzens: Bedeutung der Base-Line-Schwankung in der Perinatalperiode.