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Tung A, Sperry MM, Clawson W, Pavuluri A, Bulatao S, Yue M, Flores RM, Pai VP, McMillen P, Kuchling F, Levin M. Embryos assist morphogenesis of others through calcium and ATP signaling mechanisms in collective teratogen resistance. Nat Commun 2024; 15:535. [PMID: 38233424 PMCID: PMC10794468 DOI: 10.1038/s41467-023-44522-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 12/17/2023] [Indexed: 01/19/2024] Open
Abstract
Information for organismal patterning can come from a variety of sources. We investigate the possibility that instructive influences for normal embryonic development are provided not only at the level of cells within the embryo, but also via interactions between embryos. To explore this, we challenge groups of embryos with disruptors of normal development while varying group size. Here, we show that Xenopus laevis embryos are much more sensitive to a diverse set of chemical and molecular-biological perturbations when allowed to develop alone or in small groups, than in large groups. Keeping per-embryo exposure constant, we find that increasing the number of exposed embryos in a cohort increases the rate of survival while incidence of defects decreases. This inter-embryo assistance effect is mediated by short-range diffusible signals and involves the P2 ATP receptor. Our data and computational model emphasize that morphogenesis is a collective phenomenon not only at the level of cells, but also of whole bodies, and that cohort size is a crucial variable in studies of ecotoxicology, teratogenesis, and developmental plasticity.
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Affiliation(s)
- Angela Tung
- Allen Discovery Center at Tufts University, Medford, MA, 02155, USA
| | - Megan M Sperry
- Allen Discovery Center at Tufts University, Medford, MA, 02155, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, 02115, USA
| | - Wesley Clawson
- Allen Discovery Center at Tufts University, Medford, MA, 02155, USA
| | - Ananya Pavuluri
- Allen Discovery Center at Tufts University, Medford, MA, 02155, USA
| | - Sydney Bulatao
- Allen Discovery Center at Tufts University, Medford, MA, 02155, USA
| | - Michelle Yue
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, 02115, USA
| | - Ramses Martinez Flores
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, 02115, USA
| | - Vaibhav P Pai
- Allen Discovery Center at Tufts University, Medford, MA, 02155, USA
| | - Patrick McMillen
- Allen Discovery Center at Tufts University, Medford, MA, 02155, USA
| | - Franz Kuchling
- Allen Discovery Center at Tufts University, Medford, MA, 02155, USA
| | - Michael Levin
- Allen Discovery Center at Tufts University, Medford, MA, 02155, USA.
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, 02115, USA.
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Durmaz A, Sezici E, Akkaya DD. The effect of kangaroo mother care or skin-to-skin contact on infant vital signs: A systematic review and meta-analysis. Midwifery 2023; 125:103771. [PMID: 37454580 DOI: 10.1016/j.midw.2023.103771] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 06/22/2023] [Accepted: 07/07/2023] [Indexed: 07/18/2023]
Abstract
BACKGROUND It has been reported that kangaroo mother care/skin-to-skin contact immediately after birth facilitates the newborn's physiological and psychological adaptation to extrauterine life. OBJECTIVE To examine the effect of kangaroo mother care/skin-to-skin contact on infants' body temperature, oxygen saturation, respiratory rate and heart rate. DESIGN Systematic review and meta-analysis. METHODS PubMed, ScienceDirect, SpringerLink, Wiley Online Library and Taylor & Francis Online were searched for the period 1 January 2015 to 30 November 2021 for studies published in the English language. The methodological quality of articles was assessed using the modified Jadad scale and the Newcastle-Ottawa scale. Effect size calculations were made using the fixed effects and random effects models. FINDINGS This meta-analysis included 13 studies, with a total of 891 infants. Kangaroo mother care/skin-to-skin contact was effective for maintaining infants' body temperature (p = 0.000). Infants' heart rate decreased (p = 0.015) and oxygen saturation was higher (p = 0.040) following kangaroo mother care/skin-to-skin contact. Kangaroo mother care/skin-to-skin contact did not affect infants' respiratory rate (p = 0.896), but infants' respiratory rate decreased after kangaroo mother care/skin-to-skin contact (p = 0.047). KEY CONCLUSIONS AND IMPLICATIONS FOR PRACTICE Kangaroo mother care/skin-to-skin contact is effective for improving the vital signs of newborns. Kangaroo mother care/skin-to-skin contact is recommended for all neonates, and standardization of this approach would be beneficial.
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Affiliation(s)
- Aysegul Durmaz
- Department of Midwifery, Faculty of Health Sciences, Kutahya Health Sciences University, Kutahya, Türkiye.
| | - Emel Sezici
- Department of Pediatric Nursing, Faculty of Health Sciences, Kutahya Health Sciences University, Kutahya, Türkiye
| | - Deniz Done Akkaya
- Department of Pediatric Nursing, Faculty of Health Sciences, Kutahya Health Sciences University, Kutahya, Türkiye
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Swieter E, Gross JM, Stephen J, Watterberg K, Maxwell JR. Pilot study shows skin-to-skin care with parents improves heart rate variability in preterm infants in the neonatal intensive care unit. Front Pediatr 2023; 11:1269405. [PMID: 37790693 PMCID: PMC10544889 DOI: 10.3389/fped.2023.1269405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Accepted: 09/01/2023] [Indexed: 10/05/2023] Open
Abstract
Background Skin-to-skin care in the newborn intensive care unit typically lasts for short periods of time and enhances breastfeeding, attachment, and parental self-esteem. Heart rate variability (HRV) increases with gestational age and is a measure of maturation of parasympathetic vs. sympathetic autonomic nervous system activity. HRV measurements may be useful in capturing changes in autonomic regulation in response to skin-to-skin care. Objective To analyze the effects of skin-to-skin care on HRV in preterm infants receiving respiratory support. We hypothesized that skin-to-skin care would result in a more mature pattern of parasympathetic activity. Methods In this prospective crossover study, infants <30 weeks' gestation and 1-6 weeks postnatal age had HRV recorded for 30 min before, during, and after skin-to-skin care sessions. HRV characteristics analyzed included the standard deviation of the normal-to-normal interval (SDNN), the root mean squared of successive differences of normal-to-normal intervals (RMSSD), and the standard deviation of decelerations (SDDec). Results 10 infants between 25 5/7-29 6/7 weeks gestational age and 7-41 days postnatal age completed 22 sessions while receiving respiratory support (positive pressure ventilation or nasal cannula oxygen). Two measures of HRV (SDNN and RMSSD) were significantly decreased by the end of the skin-to-skin sessions, compared to pre-session values. SDNN decreased from a median of 10.44 ms before the session to 6.70 ms after being placed back in bed (p < 0.05), with RMSSD decreasing from a median of 6.80 ms before the session to 4.32 ms while being held at the end of 30 min (p < 0.05). Discussion Skin-to-skin care with a parent resulted in a more mature autonomic nervous system pattern in preterm infants receiving respiratory support, suggesting physiologic benefit for the infant. No adverse events were seen during any session.
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Affiliation(s)
- Erin Swieter
- Department of Pediatrics, University of New Mexico, Albuquerque, NM, United States
| | - Jessica M. Gross
- Clinical and Translational Science Center, University of New Mexico, Albuquerque, NM, United States
| | - Julia Stephen
- The Mind Research Network a Division of Lovelace Biomedical Research Institute, Albuquerque, NM, United States
| | - Kristi Watterberg
- Department of Pediatrics, University of New Mexico, Albuquerque, NM, United States
| | - Jessie R. Maxwell
- Department of Pediatrics, University of New Mexico, Albuquerque, NM, United States
- Department of Neurosciences, University of New Mexico, Albuquerque, NM, United States
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Pineda R, Kellner P, Guth R, Gronemeyer A, Smith J. NICU sensory experiences associated with positive outcomes: an integrative review of evidence from 2015-2020. J Perinatol 2023; 43:837-848. [PMID: 37029165 PMCID: PMC10325947 DOI: 10.1038/s41372-023-01655-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 03/09/2023] [Accepted: 03/17/2023] [Indexed: 04/09/2023]
Abstract
To inform changes to the Supporting and Enhancing NICU Sensory Experiences (SENSE) program, studies investigating sensory-based interventions in the NICU with preterm infants born ≤32 weeks were identified. Studies published between October 2015 to December 2020, and with outcomes related to infant development or parent well-being, were included in this integrative review. The systematic search used databases including MEDLINE, Cumulative Index to Nursing and Allied Health Literature, the Cochrane Library, and Google Scholar. Fifty-seven articles (15 tactile, 9 auditory, 5 visual, 1 gustatory/olfactory, 5 kinesthetic, and 22 multimodal) were identified. The majority of the sensory interventions that were identified within the articles were reported in a previous integrative review (1995-2015) and already included in the SENSE program. New evidence has led to refinements of the SENSE program, notably the addition of position changes across postmenstrual age (PMA) and visual tracking starting at 34 weeks PMA.
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Affiliation(s)
- Roberta Pineda
- Chan Division of Occupational Science and Occupational Therapy, University of Southern California, Los Angeles, CA, USA.
- Keck School of Medicine, Department of Pediatrics, Los Angeles, CA, USA.
- Program in Occupational Therapy, Washington University School of Medicine, St. Louis, MO, USA.
| | - Polly Kellner
- Chan Division of Occupational Science and Occupational Therapy, University of Southern California, Los Angeles, CA, USA
| | - Rebecca Guth
- Center for Clinical Excellence, BJC HealthCare, St. Louis, MO, USA
| | | | - Joan Smith
- Department of Quality, Safety, and Practice Excellence, St. Louis Children's Hospital, St. Louis, MO, USA
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Bembich S, Castelpietra E, Cont G, Travan L, Cavasin J, Dolliani M, Traino R, Demarini S. Cortical activation and oxygen perfusion in preterm newborns during kangaroo mother care: A pilot study. Acta Paediatr 2023; 112:942-950. [PMID: 36722000 DOI: 10.1111/apa.16695] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 01/25/2023] [Accepted: 01/30/2023] [Indexed: 02/02/2023]
Abstract
AIM This study aimed to assess the functional activation of preterm newborns' cerebral cortex during kangaroo mother care. Possible effects of gestational age and previous kangaroo mother care experience were also considered. METHODS Fifteen preterm newborns were recruited (gestational age: 24-32 weeks). Cortical activation was assessed in frontal, motor and primary somatosensory cortices after 15 and 30 min of kangaroo mother care by multichannel near-infrared spectroscopy (gestational age at assessment: 30-36 weeks). Both oxy- and deoxy-haemoglobin variations were analysed by t-test. Possible effects of gestational age and previous kangaroo mother care experience on cortical activation were studied by regression analysis. RESULTS After 15 min, bilateral activations (oxy-haemoglobin increase) were observed in frontal, somatosensory and motor cortices. After 30 min, the right motor and primary somatosensory cortices were found activated. Deoxy-haemoglobin increased after 15 min, returning to baseline at 30 min. After 15 min, there was a positive effect of gestational age at the assessment on both haemoglobin concentrations and a negative effect of previous kangaroo mother care on deoxy-haemoglobin increase. CONCLUSION Motor and somatosensory cortices, particularly on the right side, showed significant activation during kangaroo mother care. Kangaroo mother care seems to benefit activated cortical areas by improving oxygen supply.
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Affiliation(s)
- Stefano Bembich
- Institute for Maternal and Child Health IRCCS "Burlo Garofolo", Trieste, Italy
| | - Elena Castelpietra
- Institute for Maternal and Child Health IRCCS "Burlo Garofolo", Trieste, Italy
| | - Gabriele Cont
- Institute for Maternal and Child Health IRCCS "Burlo Garofolo", Trieste, Italy
| | - Laura Travan
- Institute for Maternal and Child Health IRCCS "Burlo Garofolo", Trieste, Italy
| | - Julia Cavasin
- Institute for Maternal and Child Health IRCCS "Burlo Garofolo", Trieste, Italy
| | - Matteo Dolliani
- Institute for Maternal and Child Health IRCCS "Burlo Garofolo", Trieste, Italy
| | - Rosaria Traino
- Institute for Maternal and Child Health IRCCS "Burlo Garofolo", Trieste, Italy
| | - Sergio Demarini
- Institute for Maternal and Child Health IRCCS "Burlo Garofolo", Trieste, Italy
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Zhu Z, Wang X, Chen W, Pei S, Wang Q, Guan H, Zhu G. The efficacy of Kangaroo-Mother care to the clinical outcomes of LBW and premature infants in the first 28 days: A meta-analysis of randomized clinical trials. Front Pediatr 2023; 11:1067183. [PMID: 36923278 PMCID: PMC10008937 DOI: 10.3389/fped.2023.1067183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 01/31/2023] [Indexed: 03/03/2023] Open
Abstract
Objective The objective of this study was to systematically determine the benefits of Kangaroo-Mother Care (KMC) on the clinical outcomes of low birthweight (LBW) and preterm infants. Methods For this study, the following databases were retrieved for articles published until November 2021: PubMed, Web of Science, EBSCO, and the Cochrane library. The primary clinical outcome was mortality between enrollment and 28 days. The secondary clinical outcomes were the mean duration of hospital stay, hypothermia, sepsis, exclusive breastfeeding at the end of the neonatal period, and exclusive breastfeeding at discharge. Results We conducted a meta-analysis, which included 17 RCTs, involving overall 17,668 participants. The results of this meta-analysis showed that KMC could reduce the primary clinical outcome of mortality between enrollment and 28 days (RR: 0.80, 95% Cl: 0.71-0.91, p < 0.01). For the secondary clinical outcomes, KMC had a varying degree of benefits on the mean duration of hospital stay (SMD: -0.96, 95% Cl: -1.02-0.90, p < 0.001), hypothermia (RR: 0.45, 95% Cl: 0.27-0.75, p < 0.01), and sepsis (RR: 0.79, 95% Cl: 0.70-0.89, p < 0.001). The exclusive breastfeeding at the end of the neonatal period and exclusive breastfeeding at discharge of KMC had benefits, which was not statistically different though (OR: 2.16, 95% Cl: 0.55-8.41, p = 0.27; OR: 1.16, 95% Cl: 0.82-1.64, p = 0.39, respectively). Conclusions KMC was decreased mortality in LBW and premature infants between enrollment and 28 days. In addition, KMC also had a favorable effectiveness on the secondary clinical outcomes, such as mean duration of hospital stay, hypothermia, sepsis. Moreover, KMC also had a slight effectiveness on exclusive breastfeeding at the end of the neonatal period and exclusive breastfeeding at discharge.
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Affiliation(s)
- Zhen Zhu
- Department of Obstetrics, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Xinchen Wang
- Department of Obstetrics, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Wenzeng Chen
- Department of Obstetrics, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Shuping Pei
- Department of Obstetrics, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Qingmin Wang
- Department of Obstetrics, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Hailian Guan
- Department of Obstetrics, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Guang Zhu
- Department of Gynaecology, Tongde Hospital of Zhejiang Province, Hangzhou, China
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Linnér A, Lode Kolz K, Klemming S, Bergman N, Lilliesköld S, Markhus Pike H, Westrup B, Rettedal S, Jonas W. Immediate skin-to-skin contact may have beneficial effects on the cardiorespiratory stabilisation in very preterm infants. Acta Paediatr 2022; 111:1507-1514. [PMID: 35466432 DOI: 10.1111/apa.16371] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 04/21/2022] [Accepted: 04/22/2022] [Indexed: 12/13/2022]
Abstract
AIM Our aim was to investigate what effect immediate skin-to-skin contact with a parent had on the cardiorespiratory stabilisation of very preterm infants. METHODS This randomised clinical trial was conducted during 2018-2021 at two university hospitals with three neonatal intensive care units in Norway and Sweden. Infants born from 28+0 to 32+6 weeks of gestation were randomised to immediate skin-to-skin contact with a parent for the first six postnatal hours or standard incubator care. The outcome was a composite cardiorespiratory stability score, based on serial measures of heart and respiratory rate, respiratory support, fraction of inspired oxygen and oxygen saturation. RESULTS We recruited 91 newborn infants with a mean gestational age of 31+1 (range 28+4-32+6) weeks and mean birth weight of 1534 (range 555-2440) g: 46 received immediate skin-to-skin contact and 45 received incubator care. The group who received skin-to-skin contact had an adjusted mean score of 0.52 higher (95% confidence interval 0.38-0.67, p < 0.001) on a scale from zero to six when compared to the control group. CONCLUSION Immediate skin-to-skin contact for the first six postnatal hours had beneficial effects on the cardiorespiratory stabilisation of very preterm infants.
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Affiliation(s)
- Agnes Linnér
- Department of Women's and Children's Health Karolinska Institutet Stockholm Sweden
- Neonatal Unit Karolinska University Hospital Stockholm Sweden
| | - Karoline Lode Kolz
- Department of Paediatrics Stavanger University Hospital Stavanger Norway
- Faculty of Health Sciences Stavanger University Stavanger Norway
- Department of Clinical Neurophysiology Stavanger University Hospital Stavanger Norway
| | - Stina Klemming
- Neonatal Unit Karolinska University Hospital Stockholm Sweden
| | - Nils Bergman
- Department of Women's and Children's Health Karolinska Institutet Stockholm Sweden
| | - Siri Lilliesköld
- Department of Women's and Children's Health Karolinska Institutet Stockholm Sweden
- Neonatal Unit Karolinska University Hospital Stockholm Sweden
| | - Hanne Markhus Pike
- Department of Paediatrics Stavanger University Hospital Stavanger Norway
| | - Björn Westrup
- Department of Women's and Children's Health Karolinska Institutet Stockholm Sweden
| | - Siren Rettedal
- Department of Paediatrics Stavanger University Hospital Stavanger Norway
- Faculty of Health Sciences Stavanger University Stavanger Norway
| | - Wibke Jonas
- Department of Women's and Children's Health Karolinska Institutet Stockholm Sweden
- Faculty of Health University of Applied Sciences Bielefeld Germany
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Thernström Blomqvist Y, Ågren J, Karlsson V. The Swedish approach to nurturing extremely preterm infants and their families: A nursing perspective. Semin Perinatol 2022; 46:151542. [PMID: 34911652 DOI: 10.1016/j.semperi.2021.151542] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Nurturing extremely premature infants is a complicated task that not only necessitates a systematic approach to the immature physiology and its medical management, but also to the needs of the family. Infants born at 22-24 weeks require many weeks of intensive care including a long duration of mechanical ventilation, numerous stressful medical interventions, and for the parents to spend a lot of time in the Neonatal Intensive Care unit (NICU). This paper aims to outline the Swedish nursing approach to nurturing these infants and their families. The nursing care is structured so the parents are the primary caregivers supported by the staff and is based on: timely expression and provision of mother's own breast milk, early and prolonged skin-to-skin contact and close collaboration with the family. While this presentation is based on a single-center's experience, it well represents the general features of nursing provided to extremely preterm infants in Swedish NICUs.
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Affiliation(s)
- Ylva Thernström Blomqvist
- Neonatal Intensive Care Unit, University Children's Hospital, Uppsala, Sweden; Department of Women´s and Children´s Health, Uppsala University, Uppsala, Sweden
| | - Johan Ågren
- Neonatal Intensive Care Unit, University Children's Hospital, Uppsala, Sweden; Department of Women´s and Children´s Health, Uppsala University, Uppsala, Sweden
| | - Victoria Karlsson
- Neonatal Intensive Care Unit, University Children's Hospital, Uppsala, Sweden; Department of Women´s and Children´s Health, Uppsala University, Uppsala, Sweden.
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Preterm infant heart rate is lowered after Family Nurture Intervention in the NICU: Evidence in support of autonomic conditioning. Early Hum Dev 2021; 161:105455. [PMID: 34517207 DOI: 10.1016/j.earlhumdev.2021.105455] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 08/17/2021] [Accepted: 08/24/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Cardiac complications after premature birth are associated with negative long-term consequences to health. The Family Nurture Intervention (FNI) has been designed to support mother-infant parasympathetic calming sessions in the neonatal intensive care unit (NICU). FNI has shown neurodevelopmental and autonomic benefit across infant development. AIMS We tested the hypothesis that heart rate (HR) will decrease after FNI over the course of the NICU stay, compared to matched controls. STUDY DESIGN We used a case-matched design. The intervention included on average four ~1-hour facilitated mother-infant 'calming' sessions per week. We collected 24/7 real time heart rate data from a central monitoring system and analyzed data from two time-periods. SUBJECTS The intervention group comprised 37 infants born ~30 weeks gestational age (GA) in a level IV NICU, treated with FNI. From the same NICU and time-period, we created a contemporaneous comparison group of 32 infants who were case-matched to each intervention infant for sex, age-at-birth, singleton or twin status, month of admission and length of stay. OUTCOME MEASURES Using generalized estimating equation (GEE) modeling, we analyzed 24/7 HR data during a 1-hour period between 4:30 and 5:30 am each day in the NICU, when all infants were least disturbed. Using repeated measures ANOVA, we analyzed 24/7 HR data during a 6-week period starting 1 week prior to the start of FNI and ending 5 weeks after start. RESULTS GEE modeling of the 1-hour data from all subjects showed significant lower HR in the FNI group, compared with controls. ANOVA modeling on a subset of subjects over the five-week period showed that FNI infant HR decreased in a dose-response manner relative to SC HR. CONCLUSION This study suggests FNI may condition lower infant HR in a dose-response manner during the NICU stay.
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Kato Y, Takemoto A, Oumi C, Hisaichi T, Shimaji Y, Takaoka M, Moriyama H, Hirata K, Wada K. Effects of skin-to-skin care on electrical activity of the diaphragm in preterm infants during neurally adjusted ventilatory assist. Early Hum Dev 2021; 157:105379. [PMID: 33962362 DOI: 10.1016/j.earlhumdev.2021.105379] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 04/17/2021] [Accepted: 04/20/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND Skin-to-skin care (SSC) reduces neonatal mortality and morbidity and is widely implemented in the neonatal intensive care unit. However, changes in respiratory effort during SSC in ventilated preterm infants remain unclear. AIMS To evaluate the effect of SSC on electrical activity of the diaphragm (Edi) and vital signs in premature infants who are intubated and under neurally adjusted ventilatory assist ventilation. STUDY DESIGN We performed an observational cross-over study. Data were measured in three periods: before (pre-SSC period), during (SSC period), and after (post-SSC period) SSC. Stable 30-min data in each period were extracted. SUBJECTS Thirty-four SSC procedures were performed in 14 preterm infants with a median gestational age of 25.3 weeks (interquartile range, 24, 26.4) and a birth weight of 659 g (566, 694). The median postnatal age was 41 days (31, 53) at the study with a median postmenstrual age of 31.3 weeks (30.4, 32.5). OUTCOME MEASURES Median values of Edi peak, Edi minimum, respiratory rate, SpO2, and heart rate were measured in each condition. The Kruskal-Wallis test with Bonferroni multiple comparisons was used to compare each parameter in each period. RESULTS Median Edi peak and Edi minimum values were significantly lower during SSC compared with pre- and post-SSC, without any change in respiratory rate, SpO2, or heart rate. CONCLUSIONS Respiratory efforts as evaluated by Edi are significantly reduced during SSC in ventilated preterm infants.
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Affiliation(s)
- Yuta Kato
- Department of Nursing, Osaka Women's and Children's Hospital, 840 Murodo-cho, Izumi, Osaka 594-1101, Japan.
| | - Ayumi Takemoto
- Department of Nursing, Osaka Women's and Children's Hospital, 840 Murodo-cho, Izumi, Osaka 594-1101, Japan
| | - Chiyo Oumi
- Department of Nursing, Osaka Women's and Children's Hospital, 840 Murodo-cho, Izumi, Osaka 594-1101, Japan
| | - Tomomi Hisaichi
- Department of Nursing, Osaka Women's and Children's Hospital, 840 Murodo-cho, Izumi, Osaka 594-1101, Japan
| | - Yuki Shimaji
- Department of Nursing, Osaka Women's and Children's Hospital, 840 Murodo-cho, Izumi, Osaka 594-1101, Japan
| | - Misa Takaoka
- Department of Nursing, Osaka Women's and Children's Hospital, 840 Murodo-cho, Izumi, Osaka 594-1101, Japan
| | - Hiroko Moriyama
- Department of Nursing, Osaka Women's and Children's Hospital, 840 Murodo-cho, Izumi, Osaka 594-1101, Japan.
| | - Katsuya Hirata
- Department of Neonatal Medicine, Osaka Women's and Children's Hospital, 840 Murodo-cho, Izumi, Osaka 594-1101, Japan.
| | - Kazuko Wada
- Department of Neonatal Medicine, Osaka Women's and Children's Hospital, 840 Murodo-cho, Izumi, Osaka 594-1101, Japan.
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Brunse A, Peng Y, Li Y, Lykkesfeldt J, Sangild PT. Co-bedding of Preterm Newborn Pigs Reduces Necrotizing Enterocolitis Incidence Independent of Vital Functions and Cortisol Levels. Front Pediatr 2021; 9:636638. [PMID: 33869114 PMCID: PMC8049114 DOI: 10.3389/fped.2021.636638] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 03/02/2021] [Indexed: 01/23/2023] Open
Abstract
Background: Preterm infants are born with immature organs, leading to morbidities such as necrotizing enterocolitis (NEC), a gut inflammatory disease associated with adverse feeding responses but also hemodynamic and respiratory instability. Skin-to-skin contact including "kangaroo care" may improve infant survival and health via improved vital functions (e.g., pulmonary, cardiovascular) and endocrine influences by adrenal glucocorticoids. Clinical effects of skin-to-skin contact for newborn siblings ("co-bedding") are not known. Using NEC-susceptible Preterm pigs as models, we hypothesized that co-bedding and exogenous glucocorticoids improve vital functions and NEC resistance. Methods: In experiment 1, cesarean-delivered, formula-fed Preterm pigs were reared in incubators with (co-bedding, COB, n = 30) or without (single-bedding, SIN, n = 29) a sibling until euthanasia and tissue collection on day four. In experiment 2, single-bedded Preterm pigs were treated postnatally with a tapering dose of hydrocortisone (HC, n = 19, 1-3 mg/kg/d) or saline (CON, n = 19). Results: Co-bedding reduced NEC incidence (38 vs. 65%, p < 0.05) and increased the density of colonic goblet cells (+20%, p < 0.05) but had no effect on pulmonary and cardiovascular functions (respiration, blood pressure, heart rate, blood gases) or cortisol levels. There were limited differences in intestinal villous architecture and digestive enzyme activities. In experiment 2, HC treatment increased NEC lesions in the small intestine without any effects on pulmonary or cardiovascular functions. Conclusion: Co-bedding may improve gut function and NEC resistance independently of cardiorespiratory function and cortisol levels, but pharmacological cortisol treatment predispose to NEC. Preterm pigs may be a useful tool to better understand the physiological effects of co-bedding, neonatal stressors and their possible interactions with morbidities in Preterm neonates.
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Affiliation(s)
- Anders Brunse
- Comparative Pediatrics and Nutrition, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Yueming Peng
- Comparative Pediatrics and Nutrition, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Department of Neonatology, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, China
| | - Yanqi Li
- Comparative Pediatrics and Nutrition, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Nordic Bioscience Clinical Development A/S, Herlev, Denmark
| | - Jens Lykkesfeldt
- Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Per Torp Sangild
- Comparative Pediatrics and Nutrition, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Department of Neonatology, Rigshospitalet, Copenhagen, Denmark.,Hans Christian Andersen Children's Hospital, Odense, Denmark
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