The application technique of a newly developed tissue pH electrode designed for continuous pH monitoring is described. Some parameters are described as criteria of technically accurate records.

Electrocardiography↗

PubMed1978

Improvements in the results with the continuous pH electrode due to technical progress: a comparison between two series of cases.

Our experience is based on 139 attempts of tissular pH electrode applications in the fetal scalp during labor and includes 119 records comprising 86 tracings of good quality and 33 tracings of bad quality. Technical progress in the electrode and application material allowed an increase in the good quality tracings rate (from 54.5--66%) and a decrease of the complications, particularly the numbers of broken electrodes (from 18 to 2.4%).

Electrodes↗

PubMed1978

Clinical evaluation of tissue pH monitoring during labor. Second series of 61 cases.

A newly developed tissue pH electrode designed for continuous pH monitoring was evaluated in 61 fetuses during labor. The results obtained in this series confirm the reliability of this method. The correlation coefficient between tissular pH and capillary blood pH is 0.94. The correlation coefficient between the last intrapartum tissue pH and the umbilical arterial blood pH is 0.84.

Alkalosis↗

PubMed1977

Continuous subcutaneous pH measurement in human fetuses: correlations with scalp and umbilical blood pH.

The subcutaneous pH values of 42 fetuses has been measured continuously during labor with the use of the electrode designed by Stamm and associates. We have obtained 60 per cent good tracings. The results have confirmed the reliability of the subcutaneous pH measurement, if the electrode is correctly inserted, when compared with both capillary and umbilical artery blood pH measurements (r = 0.91, p less than 0.001 and 0.83, p less than 0.001, respectively). Technical improvements appear to be necessary prior to widespread clinical use of continuous pH measurement.

Electrodes↗