Continuous tissue pH measurement on the fetus during delivery.

Tissue pH values of 70 fetuses have been measured continuously during labor using the micro-electrode designed by Stamm. Significant correlation between continuous tissue pH and corresponding micro blood values can be shown. However, the relationship between patterns of tissue pH and capillary pH values seems not to be very constant. Therefore, the reliability of individual tissue pH measurements is still questionable.

Continuous pH-measurement on anesthetized patients.

43 patients under general anesthesia were monitored by continuous tissue pH measurement and intermittent micro-blood-samples. The values obtained for the capillary pH and tissue pH were correlated. A highly significant correlation was found between tissular pH and capillary pH. Different methods of general anesthesia apparently do not influence the continuous tissue pH measurement.

A new application tool for the ROCHE pH electrode.

Using this tool the application of the pH electrode is nearly as easy as the attachment of a common ECG-scalp-electrode [3]. Visual control and lithotomy position is not necessary any more. The different tools are adapted to each other so that incision place and the tip of the pH electrode are automatically centered perpendicularly. The first results by using this tool promise to be successful. Time of application is short, the maintenance of the pH electrode is good and the application for the patient no longer disagreeable.

[The effect of 15-methyl-prostaglandin F2 alpha administered intramuscularly to induce abortion in the first half of pregnancy (proceedings)]. / Wirkung von intramuskulär appliziertem 15-Methyl-Prostaglandin F2alpha zur Abortinduktion in der 1. Schwangerschaftshälfte.

PIP: 18 women ranging in age from 17-45 years receiving intramuscular injections of 250 mcg of 15-methyl-prostaglandin F2alpha (15-methyl-PGF2alpha) averaged 17 hours +or- 7 hours to delivery. Injections were repeated after 2 hours and every 5 hours thereafter. The cumulative abortion rate for the substance was intermediate between the very favorable results obtained using intraamniotic applications of E2 prostaglandins on the 1 hand and the somewhat unfavorable results with intraamniotic and retroamniotic applications of F2 alpha on the other hand. A comparison of side effects of intramuscular injection of 15-methyl-PGF2alpha with those of PGF2alpha injected intraamniotically or retroamniotically indicates that the occurrence of vomiting was slightly greater with it but the occurrence of diarrhea was almost the same. The dynamics of labor with 15-methyl PG were found to be similar to labor after injection of PGs intraamniotically and retroamniotically. The results suggest that 15-methyl-PGF2alpha is a safe and practical substance for inducing labor between the 10th and 20th week of pregnancy.^ieng

[Frequency and distribution of breech presentation during pregnancy and labor (authors transl)]. / Häufigkeit und Verteilung von Beckenendlagen in der Schwangerschaft und bie Gebrut

On 975 pregnant women treated and delivered during 1973 at the Heidelberg University department of obstetrics 3780 ultrasound examinations were carried out. The frequency of breech presentation related to the duration of pregnancy and the likelyhood of breech presentation at term were calculated. Breech presentation can be seen as physiologic in 70% of early pregnancies. After the 33rd week it is below 10%, after the 38th week 4%. The probability of breech presentation at term at nay given stage before the 30th week is below 10%. After de 31st week this rises steeply up to a maximum of 66% after the 37th week. These influences of parity on these 2 data are described. The relationship between a low placenta and breech presentation is mentioned. These results are discussed.