A Longitudinal Description of Heart Rate Variability in 28—34-Week-Old Preterm Infants

Krueger, Charlene; Oostrom, JoHannes H. van; Shuster, Jonathan J.

doi:10.1177/1099800409341175

Cited by 24 publications

(30 citation statements)

References 50 publications

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“…Age-dependent maturation of the regulation may be reflected mainly in enhanced parasympathetic cardiac regulation before discharging to home. Several studies confirmed that the maturation of the autonomic nervous system in preterm infants is accompanied by increasing HRV with a pronounced increase of parasympathetic activity 9,10…”

Section: Discussionmentioning

confidence: 91%

Changes in Heart Rate Variability in a Premature Infant with Hydrocephalus

et al. 2012

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Objective To define changes of heart rate variability in premature infant with hydrocephalus before and after drainage procedure.Study Design The authors report a case of a premature infant with hydrocephalus with analysis of heart rate variability before and after drainage procedure. Three subsequent recordings of the electrocardiography and heart rate variability were done: the first at the age of 22 days before insertion of ventriculoperitoneal shunt, the second at the age of 36 days with functional shunt, the third at the age of 71 days (before discharge).Results Before drainage operation, there was reduced heart rate variability in time and spectral domains, and sympathetic activity was dominant. After surgery, an increase in heart rate variability parameters was found, particularly with spectral analysis. The ratio of low-frequency/high-frequency band and relative power of the low-frequency band decreased, reflecting enhanced parasympathetic activity.Conclusion Results of the heart rate variability analysis in a preterm infant with hydrocephalus before and after drainage procedure showed marked improvement in chronotropic cardiac regulation. Evaluation of heart rate variability in premature infants with hydrocephalus with increased intracranial pressure can be an additional method for monitoring of cardiac dysregulation and improvement of the cardiovascular control after successful drainage procedure.

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Section: Discussionmentioning

confidence: 91%

Changes in Heart Rate Variability in a Premature Infant with Hydrocephalus

et al. 2012

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“…HRV has been extensively measured in preterm infants, mostly on spontaneously breathing convalescent infants close to corrected full-term gestational age or hospital discharge [15,16,17]. Overall, preterm infants have a lower HRV when compared to term newborns [18].…”

Section: Discussionmentioning

confidence: 99%

Heart Rate Variability and Extubation Readiness in Extremely Preterm Infants

et al. 2013

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Background: Mechanical ventilation (MV) is associated with changes in autonomic nervous system activity in preterm infants, which can be assessed by measurements of heart rate variability (HRV). Decreased HRV has been described in adults undergoing disconnection from MV; such information is not available in preterm infants. Objective: To compare differences in HRV between infants successfully extubated and those who failed, and to evaluate the accuracy of HRV as a predictor of extubation readiness. Methods: This is a prospective, observational study of infants with a birth weight ≤1,250 g undergoing their first extubation attempt. Heart rate was measured during a 60-min period immediately prior to extubation and HRV was calculated using the frequency domain analysis. Results: A total of 47 infants were studied; 36 were successfully extubated and 11 reintubated. There were no differences in patient demographics, ventilator settings, blood gases or postextubation management between the groups. All components of the HRV analysis were significantly decreased in infants who failed, generating high areas under the receiver operating characteristic curve. The specificity and positive predictive values were 100, but with limited sensitivity and negative predictive values. Conclusions: Infants considered ‘ready to be extubated' but who subsequently failed their first extubation attempt had decreased HRV prior to extubation. Though promising, the value of HRV as a predictor of extubation readiness requires further evaluation.

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“…In particular, the most significant difference was in the high frequency component of HRV (i.e., respiratory sinus arrhythmia [RSA]), which reflects vagal (parasympathetic) modulation on the heart. RSA in preterm infants increases gradually with postmenstrual age from birth to the term period (Feldman, ; Khattak et al, ; Krueger, van Oostrom, & Shuster, ; Padhye, Williams, Khattak, & Lasky, ; Sahni et al, ); nevertheless, it is still lower than term infants even at a term‐equivalent age (De Rogalski Landrot et al, ; Eiselt et al, ; Patural et al, , ) or early infancy (Fyfe et al, ; Yiallourou et al, ). Thus, it is possible that the lower vagal function may be associated with the higher F 0 of spontaneous cries in preterm infants at term‐equivalent age.…”

Section: Introductionmentioning

confidence: 99%

Associations between respiratory arrhythmia and fundamental frequency of spontaneous crying in preterm and term infants at term‐equivalent age

Shinya

Kawai

Niwa³

et al. 2016

Developmental Psychobiology

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This study investigated whether lower vagal function in preterm infants is associated with increased fundamental frequency (F 0; frequency of vocal fold vibration) of their spontaneous cries. We assessed respiratory sinus arrhythmia (RSA) during quiet sleep as a measure of vagal function, and its relationship with the F 0 of spontaneous cries in healthy preterm and term infants at term‐equivalent age. The results showed that preterm infants have significantly lower RSA, and higher overall F 0 than term infants. Moreover, lower RSA was associated with higher overall F 0 in preterm infants, whereas higher RSA was positively associated with mean and maximum F 0, and a larger F 0 range in term infants. These results suggest that individual differences in vagal function may be associated with the F 0 of spontaneous cries via modulation of vocal fold tension in infants at an early developmental stage. © 2016 The Authors. Developmental Psychobiology Published by Wiley Periodicals, Inc. Dev Psychobiol 58:724–733, 2016.

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A Longitudinal Description of Heart Rate Variability in 28—34-Week-Old Preterm Infants

Cited by 24 publications

References 50 publications

Changes in Heart Rate Variability in a Premature Infant with Hydrocephalus

Changes in Heart Rate Variability in a Premature Infant with Hydrocephalus

Heart Rate Variability and Extubation Readiness in Extremely Preterm Infants

Associations between respiratory arrhythmia and fundamental frequency of spontaneous crying in preterm and term infants at term‐equivalent age

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