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May 30, 1977

Medical News

JAMA. 1977;237(22):2367-2377. doi:10.1001/jama.1977.03270490007001

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Transcutaneous monitoring system follows Po2 of fetuses, infants  Continuous routine measurement of arterial oxygen pressure in newborn infants can be done by a noninvasive technique that uses a transcutaneous oxygen monitor.The oxygen monitor, about the size of a nickel, heats the skin, causing a local hyperemia, and then measures the amount of oxygen that diffuses from dilated capillary loops near the skin surface through the avascular epidermis and into the permeable electrode membrane.Several published studies attest to the reliability of the correlation between transcutaneous and direct arterial sampling to measure oxygen tension."The skin of the newborn and premature infant is ideally suited for making transcutaneous measurements," says Renate Huch, MD, who together with Albert Huch, MD, has monitored more than 2,100 newborn infants at the Universitäts-Frauenklinik in Marburg, Germany. Drs Huch have also made subpartum recordings on 60 fetuses with modified monitoring equipment. The longest