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Clinical Pediatrics
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Reliability of the Dinamap Non-invasive Monitor in the Measurement of Blood Pressure of III Asian Newborns

F. Chia

Department of Pediatrics, Alexandria Hospital, Singapore

A.T. Ang

Department of Pediatrics, Alexandria Hospital, Singapore

Tze-Wai Wong

Department of Community Medicine, The Chinese University of Hong Kong

K.W. Tan

Department of Pediatrics, Alexandria Hospital, Singapore

Kam-pui Fung

Department of Pediatrics, University of Singapore

J. Lee

Department of Community, Occupational and Family Medicine, National University of Singapore.

Khin Khin

Department of Pediatrics, Alexandria Hospital, Singapore

Four hundred thirty-one paired sets of readings of systolic and diastolic blood pressure and 438 paired sets of readings of mean arterial BP from 49 ill newborns, including 21 very low birth weight infants, were analyzed for the extent and pattern of agreement and the linear relationship between the Dinamap oscillometric monitor and the direct intraarterial blood pressure readings. Agreement between the two methods was measured by the intraclass correlation, whereas the linear relationship was assessed by the product-moment correlation.

The intraclass correlations for systolic, diastolic and mean blood pressures were 0.696, 0.766, and 0.781, respectively. The product-moment correlations for systolic, diastolic and mean blood pressures were 0.706, 0.768, and 0.786, respectively.

BP measurements by the Dinamap monitor showed reasonably close agreement to those obtained by the intraarterial mean arterial pressure ranges above 40 mmHg. For mean arterial pressure of 40 mmHg and lower, BP readings by the Dinamap monitor tended to be higher than those obtained by the intraarterial method. These findings appeared to be consistent regardless of the birth weight of the newborn.

Clinical Pediatrics, Vol. 29, No. 5, 262-267 (1990)
DOI: 10.1177/000992289002900502
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