Acoustic stimulation in hypoxic-ischemic encephalopathy: heart rate analysis

Manera, John; Figueras, Joseph; Auba, Joseph; R, Jiménez

doi:10.1515/jpme.1997.25.1.89

Cited by 2 publications

(1 citation statement)

References 17 publications

(14 reference statements)

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“…Neonatal HRV has been increasingly investigated by researchers ( Baldzer et al , 1989 ; Clairambault et al , 1992 ; Porges, 1992; Witte & Rother, 1992; Eiselt et al , 1993 ; Thompson et al , 1993 ; Chatow et al 1995 ; Van Ravenswaaij‐Arts et al , 1995 ; Henslee et al , 1997 ; Manera et al 1997 ; Massin and von Bernuth, 1997; Portales et al 1997 ). As neurodevelopment progresses, and the PSNS matures, a consistent decrease in baseline HR accompanied by an increase in variability can be observed.…”

Section: Introductionmentioning

confidence: 99%

Heart rate variability of preterm neonates quantified by energy entropy

Verklan

Bickel

Moon

1999

Nursing & Health Sciences

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Identifying variables predictive of neurobehavioural sequelae is a key objective in the study of high-risk neonates. Examination of heart rate variability (HRV) characteristics may be a finer discriminator of the neonate's response to physiologic stressors than the mean heart rate. The energy entropy of the heart beat tachogram, computed in four different domains, was used to quantify the HRV in 13 preterm neonates. The entropies of energies were computed from 1024 interbeat time intervals obtained once per week from 26 to 35 weeks postconceptional age (PCA). The energy entropy computed in three of the domains, like the standard deviation of intervals, distinguished between the 10 neonates that were measured at 35 weeks PCA with 100% specificity and 67% sensitivity, but did not distinguish between healthy and unhealthy neonates at earlier ages. The findings suggest that energy entropy may be a discerning measure of physiologic stress in the preterm infant, although future research is needed to refine the test and determine statistical significance.

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