title: Longitudinal measurements of fetal heart rate (FHR) monitoring in second trimester.
abstract: We investigated the possibility of clinical diagnosis of preterm fetal well-being in the second trimester using the duration of LTVs of less than 4.5 beats/min and characteristic FHR acceleration. Fetuses between 24 and 32 weeks gestation, unlike near-term fetuses are seldom quiet and therefore the prolonged absence of fetal movement may be the best indicator of a sick fetus at these gestational ages. The amplitude and duration of the acceleration of the FHR were also clinically useful diagnostic tools for fetus well-being during the second trimester.
authors.affiliation: Department of Obstetrics and Gynecology, Jichi Medical School, Tochigi, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Ikuo
authors.forename: I
authors.initials: I
authors.lastname: Akio
authors.forename: T
authors.initials: T
authors.lastname: Taro
mesh_terms: D005260:Female; D005323:Fetal Monitoring / Q000379:methods*; D005328:Fetal Viability / Q000502:physiology; D006340:Heart Rate, Fetal / Q000502:physiology*; D006801:Humans; D008137:Longitudinal Studies; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D011296:Prenatal Diagnosis / Q000379:methods*