Autonomic cardiac regulation after general anesthesia in children

Venet, Théa; Pichot, Vincent; Charier, David; Scalabre, Aurélien; Patural, Hugues

doi:10.1111/pan.13468

Cited by 5 publications

(2 citation statements)

References 24 publications

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“…Surgical instrumentation consisted in the insertion of a catheter into the left carotid artery for monitoring systemic arterial blood pressure and for sampling arterial blood gases. General anesthesia was not used in order to avoid its effects on heart-rate and respiratory-rate variability (Venet et al, 2018). Antibiotics (ampicillin 50 mg and tobramycin 5 mg/kg) were also injected intramuscularly before anesthesia and once a day throughout the study.…”

Section: Chronic Instrumentation and Recording Equipmentmentioning

confidence: 99%

Cardiorespiratory Alterations in a Newborn Ovine Model of Systemic Inflammation Induced by Lipopolysaccharide Injection

et al. 2020

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Although it is well known that neonatal sepsis can induce important alterations in cardiorespiratory control, their detailed early features and the mechanisms involved remain poorly understood. As a first step in resolving this issue, the main goal of this study was to characterize these alterations more extensively by setting up a fullterm newborn lamb model of systemic inflammation using lipopolysaccharide (LPS) injection. Two 6-h polysomnographic recordings were performed on two consecutive days on eight full-term lambs: the first after an IV saline injection (control condition, CTRL); the second, after an IV injection of 2.5 µg/kg Escherichia coli LPS 0127:B8 (LPS condition). Rectal temperature, locomotor activity, state of alertness, arterial blood gases, respiratory frequency and heart rate, mean arterial blood pressure, apneas and cardiac decelerations, and heart-rate and respiratory-rate variability (HRV and RRV) were assessed. LPS injection decreased locomotor activity (p = 0.03) and active wakefulness (p = 0.01) compared to the CTRL. In addition, LPS injection led to a biphasic increase in rectal temperature (p = 0.01 at ∼30 and 180 min) and in respiratory frequency and heart rate (p = 0.0005 and 0.005, respectively), and to an increase in cardiac decelerations (p = 0.05). An overall decrease in HRV and RRV was also observed. Interestingly, the novel analysis of the representations of the horizontal and vertical visibility network yielded the most statistically significant alterations in HRV structure, suggesting its potential clinical importance for providing an earlier diagnosis of neonatal bacterial sepsis. A second goal was to assess whether the reflexivity of the autonomic nervous system was altered after LPS injection by studying the cardiorespiratory components of the laryngeal and pulmonary chemoreflexes. No difference was found. Lastly, preliminary results provide proof of principle that brainstem inflammation (increased IL-8 and TNF-α mRNA expression) can be shown 6 h after LPS injection. In conclusion, this full-term

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Section: Chronic Instrumentation and Recording Equipmentmentioning

confidence: 99%

Cardiorespiratory Alterations in a Newborn Ovine Model of Systemic Inflammation Induced by Lipopolysaccharide Injection

et al. 2020

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“…General anesthesia was not used in order to avoid its effects on heart-rate and respiratory-rate variability. 30 Ampicillin (50 mg) and tobramycine (5 mg/kg) were injected intramuscularly once a day until the end of the experiments.…”

Section: Methodsmentioning

confidence: 99%

Cardiorespiratory alterations in a newborn ovine model of systemic viral inflammation

et al. 2022

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Background Respiratory viruses can be responsible for severe apneas and bradycardias in newborn infants. The link between systemic inflammation with viral sepsis and cardiorespiratory alterations remains poorly understood. We aimed to characterize these alterations by setting up a full-term newborn lamb model of systemic inflammation using polyinosinic:polycytidylic acid (Poly I:C). Methods Two 6-h polysomnographic recordings were carried out in eight lambs on two consecutive days, first after an IV saline injection, then after an IV injection of 300 μg/kg Poly I:C. Results Poly I:C injection decreased locomotor activity and increased NREM sleep. It also led to a biphasic increase in rectal temperature and heart rate. The latter was associated with an overall decrease in heart-rate variability, with no change in respiratory-rate variability. Lastly, brainstem inflammation was found in the areas of the cardiorespiratory control centers 6 h after Poly I:C injection. Conclusions The alterations in heart-rate variability induced by Poly I:C injection may be, at least partly, of central origin. Meanwhile, the absence of alterations in respiratory-rate variability is intriguing and noteworthy. Although further studies are obviously needed, this might be a way to differentiate bacterial from viral sepsis in the neonatal period. Impact Provides unique observations on the cardiorespiratory consequences of injecting Poly I:C in a full-term newborn lamb to mimic a systemic inflammation secondary to a viral sepsis. Poly I:C injection led to a biphasic increase in rectal temperature and heart rate associated with an overall decrease in heart-rate variability, with no change in respiratory-rate variability. Brainstem inflammation was found in the areas of the cardiorespiratory control centers.

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Heart rate variability and surgical pleth index under anesthesia in poor and normal sleepers

Chen

et al. 2019

J Clin Monit Comput

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Autonomic cardiac regulation after general anesthesia in children

Cited by 5 publications

References 24 publications

Cardiorespiratory Alterations in a Newborn Ovine Model of Systemic Inflammation Induced by Lipopolysaccharide Injection

Cardiorespiratory Alterations in a Newborn Ovine Model of Systemic Inflammation Induced by Lipopolysaccharide Injection

Cardiorespiratory alterations in a newborn ovine model of systemic viral inflammation

Heart rate variability and surgical pleth index under anesthesia in poor and normal sleepers

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