PubMed Health⌕ Search

Biomedical subjects

W Hütter

Publications and source records attributed to W Hütter.

30 records · Page 2Linked to original sources
PubMed1990

Umbilical cord haematoma as a complication of intrauterine intravascular blood transfusion.

Between October 1985 and February 1989, 49 ultrasound-guided intravascular fetal blood transfusions were performed in 16 patients (14 with rhesus (Rh) isoimmunization, 2 with non-immunologic hydrops fetalis (NIHF)). As an intra-operative complication, perivascular haematoma of the cord occurred in three patients (7 per cent). In two cases, fetal bradycardia necessitated delivery by Caesarean section at 30 and 32 weeks' gestation, respectively. In the third case, fetal bradycardia developed during transfusion, at 31 weeks' gestation, but normalized within 3 min. The baby was delivered as planned at 36 weeks of gestation, after another transfusion at 34 weeks. Dislodgement of the needle tip into perivascular tissue, caused by sudden fetal or maternal movements, is the reason for this complication. The haematoma develops as a result of delayed recognition and continuous transfusion into Wharton's jelly. Cord haematoma may be diagnosed in time by continuous ultrasound imaging, as illustrated in case 3. To minimize the risk of needle dislodgement during transfusion, sedation of the mother and complete immobilization of the fetus by injecting a short-acting muscle relaxant into the umbilical vessel are recommended.

Adult↗
PubMed1989

Doppler sonographic findings and their correlation with implantation in an in vitro fertilization program.

In 45 women from an in vitro fertilization (IVF) program, the uterine and ovarian blood flows were investigated by vaginal Doppler sonography. The resistance index was used to evaluate the blood pattern. When comparing the patients who became pregnant after embryo transfer (ET [group I, n = 12]) with those who did not conceive (group II, n = 33), it is evident that in group I the vascular resistance of the uterine arteries is significantly lower on the day of follicular aspiration. No differences could be detected in the ovarian vessels. The data obtained so far suggest that the receptivity of the endometrium is a crucial factor for successful implantation. In the final analysis, this can be appraised not only on the basis of morphological but also of hemodynamic parameters.

Embryo Implantation↗
PubMed1989

[Ultrasonic monitoring of intravascular transfusion in severe Rhesus incompatibility. Diagnostic and therapeutic aspects after fetal relaxation].

Since October 1985 47 ultrasound-guided intrauterine intravascular transfusions were performed in 14 patients at the Department of Obstetrics and Gynecology of the University of Ulm. All newborns were delivered in good condition. The successful diagnostic and therapeutic management of severe erythroblastosis in a twin pregnancy is described. The twin with severe signs of erythroblastosis had an initial hematocrit of 12% at 26 weeks of gestation. Intravascular transfusion of 60 ml packed red cells raised the hematocrit to 41%. The ascites disappeared completely ten days after the first transfusion. Two further transfusions were performed at 29 and 33 weeks of gestation. The intrauterine intravascular relaxation with Norcuron (Vecuroniumbromid) has proved advantageous in preventing interfering fetal movement. Both newborns were delivered in good condition at 36 weeks of gestation.

Acute Disease↗
PubMed1989

[The acridine orange test. A new parameter in assessing the fertilizing capacity of spermatozoa].

Simultaneously with in vitro fertilization (IVF), the acridine orange (AO) test was performed on 51 patients according to the method of Tejada et al. This test allows a differentiation of spermatozoa with intact (double-stranded) and denatured (single-sanded) DNA. A significant relationship was demonstrated between the percentage of green-fluorescing (intact) sperm and the results of IVF. For both, the groups with (n = 40) and without (n = 11) fertilization of human eggs, a positive correlation was found between AO-test and sperm motility, and AO-test and normal sperm morphology.

Acridine Orange↗
PubMedDate not supplied

[Reproducibility of continuous wave Doppler studies in pregnancy].

The inter- and intraobserver variability of Doppler flow velocimetries of uterine, arcuate and umbilical arteries was studied using a 4 MHz continuous wave system in the second and third trimester of pregnancy. There was no significant variation in indices used to characterize the maximum frequency outline of waveforms of uteroplacental and umbilical arteries neither when two observers examined the same patient nor the examination was performed several times on the same day or over a 24 hour period by the same observer. In uteroplacental and umbilical arteries continuous wave measurements are highly accurate and are not inferior to the more expensive pulsed Duplex systems.

Blood Flow Velocity↗
PubMedDate not supplied

[Pharmacological influences on fetal lung maturity, part V: Influencing the pulmonary DPL (dipalmitoyl lecithin) level with L-thyroxin (T4)].

Dipalmitoyl lecithin (DPL = DPPC, dipalmitoyl phosphatidyl choline) is both quantitatively and functionally the most important constituent of the surfactant complex. The effect of thyroxin (T4) on fetal lung maturity was investigated by means of selective DPL determination. Following administration of thyroxin to the mother animal an increase in the DPPC content was demonstrated in rat fetuses. This increase was greater than that of the total phospholipids. This effect of thyroxin could be due to the following causes: 1, Earlier and accelerated differentiation of lung cells: more Type II cells are formed earlier and these synthesize DPPC more effectively than other lung cells (approx. 40-50% of the phosphocoline in Type II cells in DPPC). 2. Stimulation of the deacylation-reacylation cycle. 3. A combination of these mechanisms.

Amniotic Fluid↗
PubMedDate not supplied

[The value of Doppler ultrasound studies of insulin-dependent diabetic patients].

Measurement of umbilical, uterine and arcuate velocity waveforms was used to study 40 pregnancies complicated by insulin dependent diabetes. Continuous wave doppler velocimetry was used to identify flow velocity profiles during the second and third trimester of pregnancy. Resistance index (RI) was calculated to evaluate waveforms. In most of the patients with fetal growth retardation and/or pregnancy induced hypertension an increase in vessel resistance was found in uterine and arcuate arteries as well as diastolic notching. In comparison to that fact White's classification showed no significant correlation to vascular resistance determined by doppler flow measurement. This study indicates that doppler ultrasound examination may have an adjunctive role in the surveillance of pregnancies complicated by diabetes.

Blood Flow Velocity↗