[Importance and significance of the determination of pH in the diagnosis of fetal distress during labor and delivery].
The authors have used a microprocessor which is calibrated by a cartridge to be used once only for measuring the pH; as they systematically monitor the fetal acid base balance by measuring the pH and blood gases at birth, as well as in labour, when there is evidence of fetal heart rhythm abnormalities. They have been able to compare the results that they obtained using a classical membrane apparatus as against that using a microprocessor. The two types of apparatus give identical results. The costs of using the two apparatuses, including maintenance and cleaning, are comparable. The significance of evaluating the degree of fetal distress from isolated pH measurements is discussed in connection with measuring the level of lactic acid in the plasma and blood gases coupled with the measure of excess base.
D000136:Acid-Base Equilibrium; D001784:Blood Gas Analysis; D036861:Delivery, Obstetric; D005260:Female; D005316:Fetal Distress / Q000097:blood* / Q000175:diagnosis; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007231:Infant, Newborn; D007743:Labor, Obstetric; D008838:Microcomputers; D011247:Pregnancy; D011296:Prenatal Diagnosis
Intérêt et signification de la mesure du pH dans le diagnostic de la souffrance foetale au cours du travail et à la naissance.