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Comparison of noninvasive and central arterial blood pressure measurements in ELBW infants

Journal of Perinatology volume 29, pages 744–749 (2009)Cite this article

Abstract

Objective:

The objective of this study was to evaluate the difference between noninvasive and central arterial blood pressure measurements in extremely low-birth-weight (ELBW) infants.

Study Design:

We conducted a retrospective cohort study of infants with birth weight ⩽1000 g and who were admitted to a single center in 2005. Paired noninvasive and umbilical arterial blood pressure measurements obtained in the first 72 h were compared. The primary outcome was the differential between the paired measurements. Noninvasive blood pressure (NBP) measurements were defined as clinically acceptable if the differential between the pairs was 15% or lower.

Result:

We obtained 146 pairs of measurements from 38 infants. The median absolute differences between noninvasive and arterial systolic, mean and diastolic blood pressure measurements were +18.5, +12 and +10 mm Hg, respectively (percentage differential of 43, 39 and 41%, respectively). In total 75% of the noninvasive measurements of mean blood pressure were clinically unacceptable. No patient or measurement characteristic was significantly associated with clinically unacceptable noninvasive measurements.

Conclusion:

In ELBW infants, NBP measurements substantially overestimate systolic, mean and diastolic blood pressures compared with central arterial measurements.

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Authors and Affiliations

  1. Department of Pediatrics, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA

    R Troy, M Doron, M Laughon, S Tolleson-Rinehart & W Price

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  1. R Troy
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  2. M Doron
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  3. M Laughon
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  4. S Tolleson-Rinehart
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  5. W Price
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Correspondence to R Troy.

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Troy, R., Doron, M., Laughon, M. et al. Comparison of noninvasive and central arterial blood pressure measurements in ELBW infants. J Perinatol 29, 744–749 (2009). https://doi.org/10.1038/jp.2009.86

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