Items for "fetus"

Application of decorrelation-independent component analysis to biomagnetic multi-channel measurements

Biomagnetic multi-channel recordings are typically a superposition of signals from several biological sources of interest and from biological and technical noise sources...

Keywords: blind source separation, fetus, magnetocardiography, magnetoencephalography, somatosensory, time-delayed decorrelation

Comparison of two- and three-dimensional ultrasonography in lung volume measurement of normal fetuses

Aim: The purpose of this study was to compare the two- and three-dimensional methods for measuring fetal lung volume of normal fetuses.

Methods: A cross-sectional study was performed with 51 normal pregnant women between 20 and 35 weeks...

Keywords: fetus, lung volume measurements, three-dimensional image, ultrasound

Effects of nitric oxide and prostacyclin on hemodynamic response by big endothelin-1 in near term fetal sheep

Aims: To measure plasma concentrations of endothelin (ET)-1, NO metabolites (nitrate/nitrite; NO_x) and 6-keto PGF_1? (PGF_1?) in maternal and fetal sheep blood, and to evaluate the effects of big ET-1 on hemodynamic response, blood gases and NO and 6-keto PGF_1? production in near term fetal sheep.

Methods: Hemodynamic parameters were measured during infusion of big ET-1 into the carotid vein in chronically catheterized fetal sheep on day 125 of gestation...

Keywords: big endothelin-1, fetus, hypotension, 6-keto PGF1?), nitric oxide, sheep

Blink-startle reflex habituation in 30–34-week low-risk fetuses

Objective: To investigate whether the blink-startle reflex (BSR) is a good marker of habituation to vibroacoustic stimulation in healthy preterm fetuses.

Materials and methods: A total of 22 women with uncomplicated pregnancies at 30–34 weeks participated in the study...

Keywords: Blink-startle reflex, fetus, habituation

Spina bifida – a follow-up study of neonates born from 1991 to 2001

Aims. To follow the development of children born with myelomeningocoele.

Methods. We followed 54 infants born with myelomeningocele between 1991 and 2001 in the Obstetrical Department of the Medical University of Gdansk, Poland.

Results. The mortality rate for live births was 40.8%...

Keywords: diagnosis, fetus, follow-up, myelomeningocele, neural tube defect, spina bifida

Fetal brain sparing is strongly related to the degree of increased placental vascular impedance

Background: Doppler ultrasound examination has become an established method of clinical surveillance in high-risk pregnancies...

Keywords: Brain-sparing, Doppler, fetus, middle cerebral artery, placenta, pregnancy

Umbilical artery pulsatility index: reliability at different sampling sites

Objectives: To analyse the inter-observer and inter-artery reliability of the umbilical artery (UA) pulsatility index (PI) at different sampling sites.

Methods: One hundred consecutive singleton pregnancies between 24 and 40 weeks were included...

Keywords: circulation, Doppler, fetus, placenta, reliability analysis, umbilical artery

The fetus, not the mother, elicits maternal immunologic rejection: lessons from discordant dizygotic twin placentas

Aims: Our objective was to elucidate the pathogenesis of twin discordance in four dizygotic pregnancies where only one of the twins had IUGR due to chronic villitis.

Methods: We identified four cases of dizygotic twin placentas over a period of four years with evidence of chronic villitis...

Keywords: Dizygotic, fetus, IUGR, maternal immunologic rejection, placenta, twin, villitis