Vagal regulation during bottle feeding in low‐birthweight neonates: Support for the gustatory‐vagal hypothesis

Portalés, Adrián; Porges, Stephen W.; Doussard‐Roosevelt, Jane A.; Abedin, Mehnur; Lopez, Richard D.; Young, Michal; Beeram, Madhava R.; Baker, Michelle L.

doi:10.1002/(sici)1098-2302(199704)30:3<225::aid-dev5>3.3.co;2-y

Cited by 8 publications

(10 citation statements)

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“…A time‐domain index of HF‐HPV (rMSSD) exhibited a similar pattern of responses to feeding. Interestingly, the study by Portales was conducted with low BW (<2500 g) infants (27) and is thus consistent with our findings of vagal inhibition during feeding in small babies. The finding that MID babies did not experience significant withdrawal of vagal tone during feeding raises the possibility that vagal inhibition during feeding is not the mode of HR modulation in most infants.…”

Section: Discussionsupporting

confidence: 90%

“…We expected that feeding would result in a decrease in vagal modulation of HR as evidenced by a decrease in HF‐HPV. A prior study by Portales and colleagues in which heart period and respiratory sinus arrhythmia (RSA) contributions to HF‐HPV were measured during bottle feeding supported this expectation; infants increase their HR (decrease their heart period) and decrease RSA during feeding (27). However, in the current study, while increases in HR were seen in all three BW groups during feeding, decreases in HF‐HPV were significant only in the LOW and HIGH BW groups (see Table 4).…”

Section: Discussionmentioning

confidence: 90%

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Cardiorespiratory measures before and after feeding challenge in term infants are related to birth weight

2009

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 90%

Cardiorespiratory measures before and after feeding challenge in term infants are related to birth weight

2009

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“…Similar to the full term infants described in the Porges and Lipsitt study, clinically stable low-birthweight preterm infants (near the time of discharge) also decreased RSA and increased heart rate during feeding (Portales et al, 1997). When feeding was terminated, heart rate and RSA returned to pre-feeding levels.…”

Section: Feeding: Challenging and Exercising The Vagal Brake Through mentioning

confidence: 58%

The early development of the autonomic nervous system provides a neural platform for social behaviour: a polyvagal perspective

Porges

Furman

2011

Infant and Child Development

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432

419

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We present a biobehavioral model that explains the neurobiological mechanisms through which measures of vagal regulation of the heart (e.g., respiratory sinus arrhythmia) are related to infant self-regulatory and social engagement skills. The model describes the sequential development of the neural structures that provide a newborn infant with the ability to regulate physiological state in response to a dynamically changing postpartum environment. Initially, the newborn uses primitive brainstem-visceral circuits via ingestive behaviors as the primary mechanism to regulate physiological state. However, as cortical regulation of the brainstem improves during the first year of life, reciprocal social behavior displaces feeding as the primary regulator of physiological state. The model emphasizes two sequential phases in neurophysiological development as the fetus transitions to postpartum biological and social challenges: 1) the development of the myelinated vagal system during the last trimester, and 2) the development of cortical regulation of the brainstem areas regulating the vagus during the first year postpartum.Keywords social behavior; infancy; polyvagal theory; heart rate variability; respiratory sinus arrhythmia During the last trimester and continuing through the first year postpartum, the autonomic nervous system is rapidly changing. These changes insure that the infant can breathe, obtain food, and maintain body temperature. Coupled with the development of these abilities to obtain basic biological needs is a progressive change in the infant's ability to regulate physiological and behavioral state through interactions with another person (e.g., mother). We propose that the developmental changes in the neural pathways that regulate autonomic state provide a neural platform to support the expanding abilities of the infant to engage objects and people in a dynamically changing environment Thus, the emerging behavioral repertoire and social-interactive needs of the rapidly developing young infant should be studied within the context of the maturational changes in the autonomic nervous system. Contrary to the hypothesized dependence of social behavior on the autonomic nervous system, the autonomic nervous system has played a limited role within predominant theories in developmental psychology. Similarly, given the critical role that the autonomic nervous system plays in the infant's survival during the transition from prenatal to postnatal environments, it is surprising that an understanding of the central mechanisms mediating the autonomic nervous system has been tangential to pediatric medicine. In general, measures of

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“…Premature infants responded to handling with greater wakefulness and fidgeting. Portales et al . (1997) studied changes of vagal tone and heart period during bottle‐feeding in 30 premature babies.…”

Section: Literature Reviewmentioning

confidence: 95%

Effects of sponge bathing on vagal tone and behavioural responses in premature infants

Lee

2002

Journal of Clinical Nursing

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The purpose of this study was to evaluate the effects of sponge bathing on physiological (vagal tone, heart rate, heart period, oxygen saturation) and behavioural responses in newly born premature infants in the intensive care unit of a university hospital in South Korea. A convenience sample was taken of 40 infants who were between 27 and 36 weeks gestational age at birth and free of congenital defects. The infants' physiological parameters were recorded 10 min before, during and after bathing. To determine behavioural status, tools were modified from the instruments used in a previous study by Scafidi et al. (1990). Analysis of the results showed that the premature infants reacted to sponge bathing with decreases in vagal tone and heart period and increases in heart rate. Oxygen saturation did not demonstrate any remarkable alteration during bathing. Also, there were no significant differences in behavioural signs, motor activity and behavioural distress. Results of this study indicated that nurses in a neonatal intensive care unit should decide according to a premature infant's physiological state whether or not to give a sponge bath.

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Vagal regulation during bottle feeding in low‐birthweight neonates: Support for the gustatory‐vagal hypothesis

Cited by 8 publications

References 1 publication

Cardiorespiratory measures before and after feeding challenge in term infants are related to birth weight

Cardiorespiratory measures before and after feeding challenge in term infants are related to birth weight

The early development of the autonomic nervous system provides a neural platform for social behaviour: a polyvagal perspective

Effects of sponge bathing on vagal tone and behavioural responses in premature infants

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