Abstract
Sixteen infants in whom umbilical artery catheters were placed also had radial or ulnar artery catheters placed. Calibrated transducers generated a continuous hard-copy recording of systolic and diastolic pressures from these catheters. Simultaneously these infants had blood pressure measured by a “device for indirect noninvasive automatic mean arterial pressure” (DINAMAP)*. This was recorded on the same hard copy. The majority of infants were studied within 72 hours of birth. Average study time was 18 hours. Differences in systolic and diastolic pressure between RA and UA and DINAMAP were calculated as follows:
Differences between these modes of measurement in individual infants did not change significantly from the first half of the study to the second half. Factors such as placement of the DINAMAP cuff on the lower extremity ipsilateral to the cannulated umbilical vessel appear to bring the measurements even closer. UA and RA pressures are similar in sick newborns. Likewise, DINAMAP reflects radial pressures, but these measurements are done automatically and continuously with this device.
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Myerberg, D., Neal, W. 1383 COMPARISON OF SIMULTANEOUSLY MEASURED RADIAL ARTERY (RA)UMBILICAL ARTERY (UA), AND DINAMAP PRESSURE IN SICK NEWBORNS. Pediatr Res 15 (Suppl 4), 673 (1981). https://doi.org/10.1203/00006450-198104001-01412
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DOI: https://doi.org/10.1203/00006450-198104001-01412