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Biomedical subjects

R Boos

Publications and source records attributed to R Boos.

60 records · Page 4Linked to original sources
PubMedDate not supplied

[Fetofetal transfusion syndrome in twin pregnancy with prune belly syndrome].

The authors report on a twin pregnancy with one phenotypically normal twin and one with Prune-Belly-syndrome. Since a severe urethral obstruction-malformation complex was apparent, a premature vaginal delivery was aimed for. A pathologic CTG of the healthy twin, with silent and sinusoidal graph pattern, rendered a primary cesarean section necessary in the 36th + 0 week of pregnancy. The cause was established as a fetofetal transfusion syndrome with severe anemia of the phenotypically normal newborn. Following appropriate blood transfusion the subsequent development of this child was free of complications. The child with Prune-Belly-syndrome died on the second day of life.

Adult↗
PubMedDate not supplied

[Controlled acoustic and photic stimulation of the fetus in the last pregnancy trimester].

The aim of the study communicated here was to check any fetal reactions occurring after external stimulation (light-optic and acoustic stimuli), depending on fetal behavioral status. The group studied (acoustic/light stimulation) comprised 85 patients with normal course of pregnancy at term (37th to 42nd week of gestation). They were compared with a control group of nonstimulated patients (n = 26), also with normal course of pregnancy and corresponding gestational age. Fetal heart frequencies and an external tokogram were recorded synchronously with the fetal respiration, body, limb and eye movements registered simultaneously by two independent observers and the fetal behavioral statuses were defined (Nijhuis, Prechtl et al. 1982; Boos and Schmidt 1984; van Vliet et al. 1985). The stimulation methods used were as follows: 1. Single-frequency pure tone (2 kHz, 120 dB, 5 sec) 2. Sawtooth-modulated pure tone (0.5-2.0 kHz, modulation frequency 10 Hz, 120 dB, 5 sec) 3. Low-frequency, sawtooth-modulated pure tone (with vibration effect), (0.1-0.3 kHz, modulation frequency 10 Hz, 120 dB, 5 sec) 4. Light stimulation: electronic photographic flash, luminous intensity 25 X 10(6) Lux/10(-3) sec, 8 flash sequences in 10 sec, distance from maternal abdomen 20 cm. In order to rule out purely coincidental changes in fetal attitude, both genuine and "sham" stimulations were performed in randomized sequence, in the latter case without any acoustic or light-optic signals. No differences in fetal reactions were found with the three different acoustic stimulation methods.(ABSTRACT TRUNCATED AT 250 WORDS)

Acoustic Stimulation↗
PubMedDate not supplied

[Breech childbirth--obstetrical and antepartum ultrasonography findings].

The clinical and sonographic findings in 662 cases with birth from breech presentation were compared with the obstetric and sonographic data of a control group (births from vertex presentation). There were significantly more primiparae aged over 30 (16%) in the breech birth group investigated than in the control group (p less than 0.001). Vaginal bleeding and/or premature labor were found more frequently in gravidae with breech presentation than in those with vertex presentation (p less than 0.001). Also, premature births occurred significantly more frequently (22%) in the former group than in the latter (9%; p less than 0.001). Furthermore, the proportion of newborns weighing less than 2500 g was higher in the breech presentation group (20%) than in the vertex presentation group (only 5%; p less than 0.001). In addition, newborns with growth retardation, with a weight percentile less than 5 were significantly more common in breech (6%) than in vertex presentation (2.8%; p less than 0.001). Uterine anomalies (in 5.5%) were more common in breech presentation cases than in the control group (0.0%; p less than 0.001). Oligohydramnios was diagnosed by sonography in 20% of the cases with breech presentation, but only in 6% of births from a vertex presentation (p less than 0.001). A pathologic placental location (placenta previa) was found more frequently (3.5%) in cases with breech presentation than in the control group (1.1%; p less than 0.01). Pathologic fetal movement was sonographically observed in 7% of the cases with breech presentation, though only in 1.6% of cases with vertex presentation (p less than 0.01).(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMedDate not supplied

[Prenatal diagnosis of severe neural tube defect in negative biochemical findings].

With reference to a case of occipital encephalocele associated with iniencephaly diagnosed by ultrasonography in the 20th week of pregnancy, the diagnostic problems of craniospinal defects, factors influencing prognosis and clinical consequences are described. Even when results of biochemical tests are negative, minute neural canal defects can be diagnosed early by ultrasonography. In the authors' opinion an ultrasonographic diagnosis of encephalocele represents an indication for termination of pregnancy, in view of the poor prognosis.

Abnormalities, Multiple↗
PubMedDate not supplied

[Fetal arrhythmia].

Our present knowledge of fetal arrhythmias is described with reference to the literature and to the authors' personal experience. Most types of arrhythmia are harmless. Fetal tachyarrhythmias are of clinical importance, because of the danger of fetal cardiac insufficiency, and atrioventricular blocks because they are closely associated with infantile heart defects and maternal collagen disease. Problems of diagnosis and management are discussed.

Arrhythmias, Cardiac↗