Transcutaneous PO2 measurements in seriously ill newborn infants.

Reliability of transcutaneous monitoring of arterial PO2 in newborn infants.

Transcutaneous and capillary pCO2 and pO2 measurements in healthy adults.

Transcutaneous carbon dioxide and oxygen tensions (tc-pCO2 and tc-pO2) were measured in seven healthy adult volunteers during hyperventilation in atmospheric air and during CO2 inhalation. Three skin sensors were applied to each subject: an O2 electrode, a CO2 electrode, and a combined O2-CO2 electrode, each heated to 44 degrees C. We observed close correlation between tc-pCO2 and capillary-pCO...

Breathing Measurements on Normal Newborn Infants.

Observations upon the frequency and amplitude of the respiratory movements of newborn children, recorded in the literature, are conflicting. The rate of breathing per minute is recorded as follows: Dohrn (1), 62; Eckstein and Rominger (2), 37 to 49; Pfaundler and Schlossmann (3), 40 to 45; and Feldman (4), 44. The depth of breathing, expressed in cubic centimeters, is given by Feldman (4) as 48...

Plasma 17-hydroxyprogesterone concentrations in ill newborn infants.

Plasma 17-hydroxyprogesterone concentrations were determined in 47 preterm and term infants who were ill from a variety of causes. The results were compared with those in 53 healthy term infants. Mean plasma 17-hydroxyprogesterone values were appreciably higher in ill term and healthy preterm infants compared with healthy term infants, but the highest values were found in ill preterm infants. N...

Performance of transcutaneous PO2 and PCO2 dual electrodes in adults.

Three commercially-available combined PO2-PCO2 electrodes were assessed in vitro, and in adults breathing air, hypoxic and hypercapnic mixtures, for speed of response, correlation with end-tidal gas tensions and drift. Differences in the 90% response time of the individual electrodes were more marked in vitro than in vivo. Changes in end-tidal gas tensions were reflected by proportionate change...