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Estimating Neonatal Oxygen Consumption from Heart Rate
Author(s) -
Woodson Robert,
Field Tiffany,
Greenberg Reena
Publication year - 1983
Publication title -
psychophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.661
H-Index - 156
eISSN - 1469-8986
pISSN - 0048-5772
DOI - 10.1111/j.1469-8986.1983.tb03013.x
Subject(s) - linear regression , heart rate , correlation , oxygen , regression , psychology , regression analysis , linear relationship , cardiology , zoology , medicine , chemistry , statistics , mathematics , blood pressure , biology , geometry , organic chemistry
The relationship between heart rate (HR) and oxygen consumption (V̇ o 2 ) has been investigated in a sample of 20 low‐risk, term neonates aged 14–48 hrs. Repeated, simultaneous measurements of HR and V̇ o 2 were performed on each neonate during each of three epochs ordered by increasing level of activity. A robust linear relationship was found between HR and V̇ o 2 , with an average correlation of.90. Substantial variation was observed across individuals in the slope of the HR‐V̇ o 2 regression line. This variation was curvilinearly related to ponderal index (PI), with low PI neonates having the shallowest and steepest slopes. These findings suggest that HR may provide a flexible, non‐restrictive means of estimating neonatal V̇ o 2 but that the impact of prenatal growth history and postnatal growth performance on the estimation of V̇ o 2 from HR merits further investigation.