Reliability of transcutaneous measurement of oxygen and carbon dioxide partial pressure with a combined Po<sub>2</sub>-Pco<sub>2</sub>electrochemical sensor in the fetus during labor

Schmidt, Stephan; Langner, K.; Dudenhausen, J. W.; Saling, E.

doi:10.1515/jpme.1985.13.3.127

Cited by 7 publications

(7 citation statements)

References 9 publications

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“…However, the correlation between second stage values and umbilical artery values was only slightly improved. This lack of correlation to umbilical artery measurements is in disagreement with the results of others [2,6,7,8]. This discrepancy might be caused by the small number of cases, in which tcPco2 was measured until just before delivery and correlated to umbilical artery Pco2 (n = 9).…”

Section: Discussioncontrasting

confidence: 69%

“…The interest focused then on the use of a transcutaneous Pco2 for fetal monitoring. This technique was mostly used by two teams in Berlin [6,7] and Copenhagen [2], which carried out an experimental study and demonstrated its reliability. The results obtained were so stimulating that an evaluation of the practicability of this electrode in an enlarged scale by teams less well aware of technical problems could be envisaged.…”

Section: Introductionmentioning

confidence: 99%

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Transcutaneous carbon dioxide measurements in the fetus during labor

Centa¹,

Giroux²,

Rorive³

et al. 1987

Journal of Perinatal Medicine

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Section: Discussioncontrasting

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Transcutaneous carbon dioxide measurements in the fetus during labor

Centa¹,

Giroux²,

Rorive³

et al. 1987

Journal of Perinatal Medicine

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“…Further development of the technique and possibilities to construct an electrode for simultaneous CCh and Ü2 monitoring [12], makes transcutaneous blood gas monitoring a potential tool for fetal routine surveillance during labor.…”

Section: Discussionmentioning

confidence: 99%

Continuous transcutaneous carbon dioxide measurement from the fetal scalp during labor and during first minutes of extrauterine life

Löfgren¹

1987

Journal of Perinatal Medicine

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“…In the fetus during delivery however, there are some specific problems that make interpretation of continuous tcPo2 curves more difficult. During the first stage of labor tcPo2 values are close by correlated to Ρθ2 values in fetal blood samples, but during the second stage of labor this correlation is lost [16]. fetal head rotates in the pelvis and the tcPo2 electrode can experience pressure by the bony pelvis, resulting in too low measured values [10].…”

Section: Transcutaneous Surveillance Of the Fetusmentioning

confidence: 99%

“…In contrast to continuous monitoring of tcPo2, reliable measurements of tcPco2 appear to be possible during the second stage of labor [16,19]. The development of a caput succedaneum appears to decrease reliability of tcPco2 levels slightly, but even in its presence a statistically significant correlation to Pco2 values of fetal scalp blood samples has been described [15].…”

Section: Transcutaneous Surveillance Of the Fetusmentioning

confidence: 99%

Measurement and processing of fetal transcutaneous Pco₂levels

Bergmans¹,

Geijn²,

Kessel³

et al. 1987

Journal of Perinatal Medicine

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Because asphyxia is not the only factor influencing fetal heart rhythm, a non-optimal cardiotachogram is not necessarily a sign of fetal distress. It makes further evaluation of the fetal condition advisable, especially determination of the acid-base equilibrium. The method of fetal blood sampling, introduced by Saling, has a number of disadvantages for mother and fetus, because of the invasiveness for both. Further, the measured acid-base equilibrium is only representative for a very short period of time and often repeated micro-blood sampling is necessary. A major problem with regard to determination of the acid-base equilibrium in intermittently obtained fetal blood samples is the inclusion of air bubbles in the sample. When they are introduced into the electrode cuvettes, the measured values cannot be considered reliable. The problem was solved in the Department of Obstetrics and Gynecology of the Vrije Universiteit of Amsterdam with a "pipe" shaped special collecting vessel. Similar measuring results were obtained with the formerly used glass capillary method and the special collecting vessel method. Continuous, non-invasive methods have been pursued to avoid the above mentioned problems. Fetal transcutaneous Po2 measurement has been possible for years, but does not provide adequate information during the important second stage of labor because of methodological problems. Continuous fetal tissue pH surveillance is possible, but it also has an invasive character and is technically difficult to perform, leading to many methodological failures. Recently, continuous transcutaneous Pco2 measurement tcPco2 became available. A good correlation was found with simultaneously measured Pco2 levels in fetal blood samples and with those of umbilical artery blood.(ABSTRACT TRUNCATED AT 250 WORDS)

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Reliability of transcutaneous measurement of oxygen and carbon dioxide partial pressure with a combined Po₂-Pco₂electrochemical sensor in the fetus during labor

Cited by 7 publications

References 9 publications

Transcutaneous carbon dioxide measurements in the fetus during labor

Transcutaneous carbon dioxide measurements in the fetus during labor

Continuous transcutaneous carbon dioxide measurement from the fetal scalp during labor and during first minutes of extrauterine life

Measurement and processing of fetal transcutaneous Pco₂levels

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Reliability of transcutaneous measurement of oxygen and carbon dioxide partial pressure with a combined Po2-Pco2electrochemical sensor in the fetus during labor

Cited by 7 publications

References 9 publications

Transcutaneous carbon dioxide measurements in the fetus during labor

Transcutaneous carbon dioxide measurements in the fetus during labor

Continuous transcutaneous carbon dioxide measurement from the fetal scalp during labor and during first minutes of extrauterine life

Measurement and processing of fetal transcutaneous Pco2levels

Contact Info

Product

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Reliability of transcutaneous measurement of oxygen and carbon dioxide partial pressure with a combined Po₂-Pco₂electrochemical sensor in the fetus during labor

Measurement and processing of fetal transcutaneous Pco₂levels