Results 211 to 220 of about 28,470 (248)

Doppler velocimetry in the evaluation of fetal hypoxia

Journal of Perinatal Medicine, 2001
Knowledge of fetal hemodynamic physiology has developed enormously during the last two decades due to Doppler ultrasound. Some of this knowledge has been utilized for routine surveillance of high-risk pregnancies. The prediction of fetal hypoxia before the development of life lasting sequel is of major importance, especially in the very premature case ...
S, Gudmundsson, M, Dubiel
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Technical Aspects of Fetal Doppler Measurements

Gynecologic and Obstetric Investigation, 2010
Doppler ultrasound may be a valuable tool in the estimation of fetal well-being. Nevertheless, a good understanding of the basic principles of ultrasound and the applied circuitry is necessary to obtain useful information. Some physical principles and limitations of ultrasound are discussed and the basics of the electronic devices are mentioned ...
C J, Ruissen, J M, van Vugt, H J, Hoogland, A P, Hoeks, J, de Haan   +4 more
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CIRCULATORY DOPPLER PARAMETERS IN FETAL HYPOXAEMIA

Prenatal Diagnosis, 1996
A 32-year-old pregnant woman (gravida 1, para 0) was delivered at 27 weeks of gestation by elective Caesarean section because of regular fetal heart rate (FHR) decelerations. Doppler ultrasound assessment of the middle cerebral artery (MCA) and the ductus venosus (DV) showed pathological results, whereas the umbilical artery waveforms were normal ...
M, Gonser, W, Erz, R, Goelz, H B, Franz
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Doppler assessment of the fetal venous system

Seminars in Perinatology, 2001
This article describes the achievements in Doppler measurements of the fetal venous circulation with emphasis on the clinical impact of these techniques. In rhesus isoimmunization, fetal venous flow assessment gives useful information on the fetal haematologic condition and on the impact of blood transfusion.
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Fetal arterial Doppler-IUGR and hypoxia

European Journal of Obstetrics & Gynecology and Reproductive Biology, 1997
Vascular resistances of various fetal areas are assessed by Doppler ultrasound. The PI, RI and S/D indices are measured on the cerebral, renal, aortic and umbilical Doppler spectrum. Ratios of these indices based on the comparison of the cerebral (Rc) and the umbilical (Rp) resistances, or carotid (Rcc) and umbilical resistances, or cerebral (Rc) and ...
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Fetal Doppler: How to Keep it Safe?

Clinical Obstetrics & Gynecology, 2010
Ultrasound's record of safety seems to be perfect, with no undisputed reports of adverse effects in humans. However, all epidemiologic studies published so far are based on information obtained with pre-1992 machines, when allowed maximal in-situ intensity for fetal use was increased. Many fetuses are examined very early in pregnancy, a time of greater
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Fetal Doppler: the panacea for fetal heart monitoring

British Journal of Midwifery, 2000
One of the midwife's responsibilities during the antenatal period is to detect the fetal heart rate. This is one of the most important indicators as to the wellbeing of the developng fetus. The activities of a midwife defined by The European Union Midwives Directive states that each midwife should:
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Doppler ultrasonography of the human fetal pulmonary circulation

European Journal of Obstetrics & Gynecology and Reproductive Biology, 2001
textabstractPulmonary hypoplasia is a condition characterized by a decrease in the number of lung cells, airways and alveoli with a resulting decrease in organ size and weight. The reported incidence of pulmonary hypoplasia in the general population is about 1 per 1000 live births and it is one of the most common single abnormalities found at ...
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Fetal monitoring and the use of doppler

British Journal of Midwifery, 2007
Electronic fetal heart monitoring provides accurate information of fetal wellbeing during the antenatal and intrapartum periods, but the monitoring equipment is usually large and therefore confined to hospital premises. During labour the use of a traditional fetal heart monitor (CTG machine) can often limit the mother's choice of birthing position ...
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Doppler fetal assessment

Current Obstetrics & Gynaecology, 1994
Daniel E. Challis, Brian J. Trudinger
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