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Campbell-Yeo M, Benoit B, Newman A, Johnston C, Bardouille T, Stevens B, Jiang A. The influence of skin-to-skin contact on Cortical Activity during Painful procedures in preterm infants in the neonatal intensive care unit (iCAP mini): study protocol for a randomized control trial. Trials 2022; 23:512. [PMID: 35725632 PMCID: PMC9208173 DOI: 10.1186/s13063-022-06424-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 05/24/2022] [Indexed: 11/21/2022] Open
Abstract
Background
Strong evidence suggests that maternal-infant skin-to-skin contact (SSC) is effective in reducing behavioural responses to pain. Given the multi-sensory benefits of SSC, it is highly likely that SSC provided during pain in early life may reduce pain-induced brain activity. The aim of this study is to examine the effect of SSC compared to 24% sucrose on pain-induced activity in the preterm infant brain during a medically required heel lance. Secondary objectives include determining (a) differences between behavioural pain response and noxious-related brain activity during heel lance and (b) rate of adverse events across groups. Methods We will randomly assign 126 babies (32 to 36 completed weeks gestational age) admitted to the neonatal intensive care unit, and their mothers within the first seven days of age to receive (i) SSC plus sterile water and (ii) 24% oral sucrose. Each baby will receive a medically indicated heel lance, following a no treatment baseline period. The primary outcome is noxious-related brain activity measured using an electroencephalogram (EEG) pain-specific event-related potential. Secondary outcomes include pain intensity measured using a bio-behavioural infant pain assessment tool (Premature Infant Pain Profile-Revised) and rate of adverse events. Discussion This will be the first clinical trial to compare the effect of SSC and 24% sucrose on pain-induced brain activity in the preterm infant brain during a clinical noxious stimulus, measured using EEG. Given the negative neurodevelopmental outcomes associated with unmanaged pain, it is imperative that preterm babies receive the most effective pain-reducing treatments to improve their health outcomes. Our findings will have important implications in informing optimal pain assessment and management in preterm infants. Trial registration ClinicalTrials.gov NCT03745963. Registered on November 19, 2018.
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Affiliation(s)
- Marsha Campbell-Yeo
- School of Nursing, Faculty of Health, Dalhousie University and IWK Health, Halifax, NS, Canada.
| | - Britney Benoit
- Rankin School of Nursing, St. Francis Xavier University, Antigonish, NS, Canada
| | - Aaron Newman
- Faculty of Science, Department of Psychology & Neuroscience, Dalhousie University, Halifax, NS, Canada
| | | | - Tim Bardouille
- Department of Physics & Atmospheric Science, Dalhousie University, Halifax, NS, Canada
| | - Bonnie Stevens
- Lawrence S Bloomberg Faculty of Nursing, University of Toronto and Child Health Evaluative Sciences Program, Research Institute, The Hospital for Sick Children (SickKids), Toronto, ON, Canada
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Campbell-Yeo M, Eriksson M, Benoit B. Assessment and Management of Pain in Preterm Infants: A Practice Update. CHILDREN (BASEL, SWITZERLAND) 2022; 9:244. [PMID: 35204964 PMCID: PMC8869922 DOI: 10.3390/children9020244] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/20/2022] [Accepted: 02/02/2022] [Indexed: 12/11/2022]
Abstract
Infants born preterm are at a high risk for repeated pain exposure in early life. Despite valid tools to assess pain in non-verbal infants and effective interventions to reduce pain associated with medical procedures required as part of their care, many infants receive little to no pain-relieving interventions. Moreover, parents remain significantly underutilized in provision of pain-relieving interventions, despite the known benefit of their involvement. This narrative review provides an overview of the consequences of early exposure to untreated pain in preterm infants, recommendations for a standardized approach to pain assessment in preterm infants, effectiveness of non-pharmacologic and pharmacologic pain-relieving interventions, and suggestions for greater active engagement of parents in the pain care for their preterm infant.
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Affiliation(s)
- Marsha Campbell-Yeo
- School of Nursing, Faculty of Health, Dalhousie University, Halifax, NS B3H 4R2, Canada
- Department of Pediatrics, Psychology and Neuroscience, Dalhousie University, Halifax, NS B3H 4R2, Canada
- IWK Health, Halifax, NS B3K 6R8, Canada
| | - Mats Eriksson
- School of Health Sciences, Faculty of Medicine and Health, Örebro University, SE-701 82 Örebro, Sweden;
| | - Britney Benoit
- Rankin School of Nursing, St. Francis Xavier University, Antigonish, NS B2G 2N5, Canada;
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Georgoulas A, Jones L, Laudiano-Dray MP, Meek J, Fabrizi L, Whitehead K. Sleep-wake regulation in preterm and term infants. Sleep 2021; 44:5889156. [PMID: 32770211 PMCID: PMC7819838 DOI: 10.1093/sleep/zsaa148] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 06/25/2020] [Indexed: 11/19/2022] Open
Abstract
Study Objectives In adults, wakefulness can be markedly prolonged at the expense of sleep, e.g. to stay vigilant in the presence of a stressor. These extra-long wake bouts result in a heavy-tailed distribution (highly right-skewed) of wake but not sleep durations. In infants, the relative importance of wakefulness and sleep are reversed, as sleep is necessary for brain maturation. Here, we tested whether these developmental pressures are associated with the unique regulation of sleep–wake states. Methods In 175 infants of 28–40 weeks postmenstrual age (PMA), we monitored sleep–wake states using electroencephalography and behavior. We constructed survival models of sleep–wake bout durations and the effect of PMA and other factors, including stress (salivary cortisol), and examined whether sleep is resilient to nociceptive perturbations (a clinically necessary heel lance). Results Wake durations followed a heavy-tailed distribution as in adults and lengthened with PMA and stress. However, differently from adults, active sleep durations also had a heavy-tailed distribution, and with PMA, these shortened and became vulnerable to nociception-associated awakenings. Conclusions Sleep bouts are differently regulated in infants, with especially long active sleep durations that could consolidate this state’s maturational functions. Curtailment of sleep by stress and nociception may be disadvantageous, especially for preterm infants given the limited value of wakefulness at this age. This could be addressed by environmental interventions in the future.
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Affiliation(s)
| | - Laura Jones
- Department of Neuroscience, Physiology and Pharmacology, University College London, London, United Kingdom
| | - Maria Pureza Laudiano-Dray
- Department of Neuroscience, Physiology and Pharmacology, University College London, London, United Kingdom
| | - Judith Meek
- Elizabeth Garrett Anderson Wing, University College London Hospitals, London, United Kingdom
| | - Lorenzo Fabrizi
- Department of Neuroscience, Physiology and Pharmacology, University College London, London, United Kingdom
| | - Kimberley Whitehead
- Department of Neuroscience, Physiology and Pharmacology, University College London, London, United Kingdom
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Roué JM, Morag I, Haddad WM, Gholami B, Anand KJS. Using sensor-fusion and machine-learning algorithms to assess acute pain in non-verbal infants: a study protocol. BMJ Open 2021; 11:e039292. [PMID: 33408199 PMCID: PMC7789448 DOI: 10.1136/bmjopen-2020-039292] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
INTRODUCTION Objective pain assessment in non-verbal populations is clinically challenging due to their inability to express their pain via self-report. Repetitive exposures to acute or prolonged pain lead to clinical instability, with long-term behavioural and cognitive sequelae in newborn infants. Strong analgesics are also associated with medical complications, potential neurotoxicity and altered brain development. Pain scores performed by bedside nurses provide subjective, observer-dependent assessments rather than objective data for infant pain management; the required observations are labour intensive, difficult to perform by a nurse who is concurrently performing the procedure and increase the nursing workload. Multimodal pain assessment, using sensor-fusion and machine-learning algorithms, can provide a patient-centred, context-dependent, observer-independent and objective pain measure. METHODS AND ANALYSIS In newborns undergoing painful procedures, we use facial electromyography to record facial muscle activity-related infant pain, ECG to examine heart rate (HR) changes and HR variability, electrodermal activity (skin conductance) to measure catecholamine-induced palmar sweating, changes in oxygen saturations and skin perfusion, and electroencephalography using active electrodes to assess brain activity in real time. This multimodal approach has the potential to improve the accuracy of pain assessment in non-verbal infants and may even allow continuous pain monitoring at the bedside. The feasibility of this approach will be evaluated in an observational prospective study of clinically required painful procedures in 60 preterm and term newborns, and infants aged 6 months or less. ETHICS AND DISSEMINATION The Institutional Review Board of the Stanford University approved the protocol. Study findings will be published in peer-reviewed journals, presented at scientific meetings, taught via webinars, podcasts and video tutorials, and listed on academic/scientific websites. Future studies will validate and refine this approach using the minimum number of sensors required to assess neonatal/infant pain. TRIAL REGISTRATION NUMBER ClinicalTrials.gov Registry (NCT03330496).
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Affiliation(s)
- Jean-Michel Roué
- Neonatal & Pediatric Intensive Care Unit, Brest University Hospital, University of Western Brittany, Brest, France
| | - Iris Morag
- Shamir Medical Center (Assaf Harofeh), Neonatal Intensive Care Unit, Tel Aviv University Sackler Faculty of Medicine, Tel Aviv, Israel
| | - Wassim M Haddad
- School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA
| | | | - Kanwaljeet J S Anand
- Department of Pediatrics, Pain/Stress Neurobiology Laboratory, Maternal and Child Health Research Institute, Stanford University School of Medicine, Stanford, California, USA
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Hartley C, Slater R. Neurophysiological measures of nociceptive brain activity in the newborn infant--the next steps. Acta Paediatr 2014; 103:238-42. [PMID: 24180281 PMCID: PMC3992895 DOI: 10.1111/apa.12490] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Accepted: 10/29/2013] [Indexed: 11/29/2022]
Abstract
Infants within neonatal intensive care units can receive multiple medically essential painful procedures per day. How they respond to these events, how best to alleviate the negative effects, and the long-term consequences for the infant are all significant questions that have yet to be fully answered. In recent years, several studies have examined cortical responses to noxious stimuli in the neonate through the use of near-infrared spectroscopy (NIRS) and electroencephalography (EEG). These investigations dispel any notion that the newborn infant does not process noxious stimuli at a cortical level and open the way for future research. In this Viewpoint Article, we review these studies and discuss key clinical challenges which may be elucidated with the use of these techniques. Conclusion Simultaneously measuring the changes that are evoked in behaviour, physiology and the cortex following noxious events will provide the best approach to understanding the neonate's experience of pain.
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Chipaux M, Colonnese MT, Mauguen A, Fellous L, Mokhtari M, Lezcano O, Milh M, Dulac O, Chiron C, Khazipov R, Kaminska A. Auditory stimuli mimicking ambient sounds drive temporal "delta-brushes" in premature infants. PLoS One 2013; 8:e79028. [PMID: 24244408 PMCID: PMC3823968 DOI: 10.1371/journal.pone.0079028] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Accepted: 09/18/2013] [Indexed: 11/21/2022] Open
Abstract
In the premature infant, somatosensory and visual stimuli trigger an immature electroencephalographic (EEG) pattern, "delta-brushes," in the corresponding sensory cortical areas. Whether auditory stimuli evoke delta-brushes in the premature auditory cortex has not been reported. Here, responses to auditory stimuli were studied in 46 premature infants without neurologic risk aged 31 to 38 postmenstrual weeks (PMW) during routine EEG recording. Stimuli consisted of either low-volume technogenic "clicks" near the background noise level of the neonatal care unit, or a human voice at conversational sound level. Stimuli were administrated pseudo-randomly during quiet and active sleep. In another protocol, the cortical response to a composite stimulus ("click" and voice) was manually triggered during EEG hypoactive periods of quiet sleep. Cortical responses were analyzed by event detection, power frequency analysis and stimulus locked averaging. Before 34 PMW, both voice and "click" stimuli evoked cortical responses with similar frequency-power topographic characteristics, namely a temporal negative slow-wave and rapid oscillations similar to spontaneous delta-brushes. Responses to composite stimuli also showed a maximal frequency-power increase in temporal areas before 35 PMW. From 34 PMW the topography of responses in quiet sleep was different for "click" and voice stimuli: responses to "clicks" became diffuse but responses to voice remained limited to temporal areas. After the age of 35 PMW auditory evoked delta-brushes progressively disappeared and were replaced by a low amplitude response in the same location. Our data show that auditory stimuli mimicking ambient sounds efficiently evoke delta-brushes in temporal areas in the premature infant before 35 PMW. Along with findings in other sensory modalities (visual and somatosensory), these findings suggest that sensory driven delta-brushes represent a ubiquitous feature of the human sensory cortex during fetal stages and provide a potential test of functional cortical maturation during fetal development.
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Affiliation(s)
- Mathilde Chipaux
- Inserm, U663, Paris, France; University Paris-Descartes, Paris, France
- CEA, Neurospin, Gif-sur-Yvette, France
- Department of Pediatric Neurosurgery, Fondation Ophtalmologique A. de Rothschild, Paris, France
| | - Matthew T. Colonnese
- Inserm, U901/Inmed, Aix-Marseille University, Marseille, France
- Department of Pharmacology and Physiology and Institute for Neuroscience, The George Washington University, Washington, D. C., United States of America
| | - Audrey Mauguen
- Inserm, U663, Paris, France; University Paris-Descartes, Paris, France
| | - Laure Fellous
- AP-HP, Department of Neonatal Care Unit, Cochin-Saint Vincent de Paul Hospital, Paris, France
| | - Mostafa Mokhtari
- AP-HP, Department of Neonatal Care Unit, Cochin-Saint Vincent de Paul Hospital, Paris, France
- AP-HP, Department of Neonatal Intensive Care Unit, Kremlin-Bicêtre Hospital, Kremlin-Bicêtre, France
| | - Oscar Lezcano
- AP-HP, Department of Neonatal Care Unit, Cochin-Saint Vincent de Paul Hospital, Paris, France
| | - Mathieu Milh
- Inserm, U901/Inmed, Aix-Marseille University, Marseille, France
| | - Olivier Dulac
- Inserm, U663, Paris, France; University Paris-Descartes, Paris, France
| | - Catherine Chiron
- Inserm, U663, Paris, France; University Paris-Descartes, Paris, France
| | - Rustem Khazipov
- Inserm, U901/Inmed, Aix-Marseille University, Marseille, France
- Laboratory of Neurobiology, Kazan Federal University, Kazan, Russia
| | - Anna Kaminska
- Inserm, U663, Paris, France; University Paris-Descartes, Paris, France
- AP-HP, Department of Clinical Neurophysiology, Cochin-Saint Vincent de Paul Hospital, Paris, France
- AP-HP, Department of Clinical Neurophysiology, Necker-Enfants Malades Hospital, Paris, France
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Allegaert K, Tibboel D, van den Anker J. Pharmacological treatment of neonatal pain: in search of a new equipoise. Semin Fetal Neonatal Med 2013; 18:42-7. [PMID: 23107602 PMCID: PMC4709244 DOI: 10.1016/j.siny.2012.10.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Inadequate management of pain in early human life contributes to impaired neurodevelopmental outcome and alters pain thresholds, pain or stress-related behavior and physiological responses. However, there are also emerging animal experimental data on the impact of exposure to analgo-sedatives on the incidence and extent of neuro-apoptosis. Since this association has also been suggested in humans, the pharmacological treatment of neonatal pain is in search of a new equipoise since these 'conflicting' observations are the main drivers to further reconsider our current treatment regimens. This review focuses on new data concerning clinical pharmacology of morphine, followed by data on more recently introduced opioids like remifentanil and tramadol, locoregional anesthesia and minimally invasive techniques in neonates, and finally with data on intravenous paracetamol. Since the available data are still incomplete, priorities for both clinical management and future research will be proposed.
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Affiliation(s)
- Karel Allegaert
- Neonatal Intensive Care Unit, University Hospital, Herestraat 49, 3000 Leuven, Belgium.
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