The use of a microcomputer for on-line analysis of heart rate variability in newborn infants

Jenkins, J C; Mitchell, R. H.; Mcclure, B. G.; Ritchie, J. W. K.; McCready, P

doi:10.1016/b978-0-407-00451-1.50010-2

Cited by 2 publications

(4 citation statements)

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“…Gestational age was highest in group A and lowest in group C. As HRV is positively correlated to gestational age [12,13], the smaller increase in LTV in group B and C may be influenced by the lower gestational age. In addition, LTV increases with postnatal age [11][12][13], a phenomenon also seen in our control infants. However, this increase was much smaller than the increase in successfully treated infants.…”

Section: Discussionmentioning

confidence: 93%

“…For clinical use, quantif ication of HRV by indices is more feasible [12,13,20]. Several indices have been de scribed.…”

Section: Discussionmentioning

confidence: 99%

“…In the neonate, HRV is decreased by immaturity, respiratory distress, brain lesions, deep sleep, and following seda tive treatment [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…Variability can be quantified by timing accurately the intervals between consecutive R waves of the ECG [13]. Two kinds of HRV have been described: long-term variability (LTV) as a measure for the bandwidth of HRV, and short-term variability describing the beat-to-beat changes of heart rate.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Long-Term Variability of Heart Rate Increases with Successful Closure of Patent Ductus arteriosus in Preterm Infants

Prietsch

Maier²,

Schmitz³

et al. 1992

Neonatology

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Long-term variability (LTV) of heart rate was calculated continuously by a microprocessor in 25 preterm infants undergoing indomethacin treatment for closure of patent ductus arteriosus (PDA), in 24 preterm infants without signs of PDA, and in 10 neonates treated with prostaglandin E₁ for cyanotic heart malformation. In infants with patent ductus arteriosus, LTV was lower than in controls. Following indomethacin, LTV increased most markedly (from 1.5 to 3.2; p < 0.01) in infants with improved ventilation. The increase was less marked (from 1.8 to 2.5; p < 0.05) in infants whose degree of respiratory failure did not change. LTV remained largely unchanged in infants who deteriorated. In 9 out of the 10 neonates treated with prostaglandin E₁, LTV increased. We conclude that LTV corresponds to brain stem oxygenation and may be a useful tool to monitor treatment of PDA.

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