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3. Multicentre, randomised controlled trial of physiological-based cord clamping versus immediate cord clamping in infants with a congenital diaphragmatic hernia (PinC): statistical analysis plan

Author

Horn-Oudshoorn, Emily J. J., Vermeulen, Marijn J., Knol, Ronny, Bout-Rebel, Rebekka, te Pas, Arjan B., Hooper, Stuart B., Otter, Suzan C. M. Cochius-den, Wijnen, Rene M. H., Crossley, Kelly J., Rafat, Neysan, Schaible, Thomas, de Boode, Willem P., Debeer, Anne, Urlesberger, Berndt, Roberts, Calum T., Kipfmueller, Florian, Capolupo, Irma, Burgos, Carmen M., Hansen, Bettina E., Reiss, Irwin K. M., and DeKoninck, Philip L. J.

Published
2024
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7. Physiological versus time based cord clamping in very preterm infants (ABC3): a parallel-group, multicentre, randomised, controlled superiority trial

Author

Knol, Ronny, Brouwer, Emma, van den Akker, Thomas, DeKoninck, Philip L.J., Onland, Wes, Vermeulen, Marijn J., de Boode, Willem P., van Kaam, Anton H., Lopriore, Enrico, Reiss, Irwin K.M., Hutten, G. Jeroen, Prins, Sandra A., Mulder, Estelle E.M., d’Haens, Esther J., Hulzebos, Christian V., Bouma, Helene A., van Sambeeck, Sam J., Niemarkt, Hendrik J., van der Putten, Mayke E., Lebon, Tinta, Zonnenberg, Inge A., Nuytemans, Debbie H., Willemsen, Sten P., Polglase, Graeme R., Steggerda, Sylke J., Hooper, Stuart B., and te Pas, Arjan B.

Published
2025
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14. Short, medium, and long deferral of umbilical cord clamping compared with umbilical cord milking and immediate clamping at preterm birth: a systematic review and network meta-analysis with individual participant data

Author

Seidler, Anna Lene, Libesman, Sol, Hunter, Kylie E, Barba, Angie, Aberoumand, Mason, Williams, Jonathan G, Shrestha, Nipun, Aagerup, Jannik, Sotiropoulos, James X, Montgomery, Alan A, Gyte, Gillian M L, Tarnow-Mordi, William O, El-Naggar, Walid, Carlo, Waldemar A, Datta, Vikram, Lago, Victor, Sundaram, Venkataseshan, Manoj, Varanattu C, Debray, Thomas P A, Sahoo, Tanushree, Trongkamonthum, Tanai, Hooper, Stuart B, Dias, Sofia, Pratesi, Simone, Badurdeen, Shiraz, Hosono, Shigeharu, Belk, Sheila S, Shekhar, Shashank, Chamnanvanakij, Sangkae, Arsan, Saadet, Knol, Ronny, Simes, Robert John, Riley, Richard D, Pongmee, Pharuhad, Davis, Peter G, Andersson, Ola, Dipak, Niraj K, Nasef, Nehad, Allam, Nahed E, Mangla, Mukul K, Meyer, Michael P, March, Melissa I, Kluckow, Martin, Goya, Maria, de Veciana, Margarita, Gharehbaghi, Manizheh M, Robledo, Kristy P, Murphy, Kellie E, Wallace, Kedra, Fairchild, Karen D, Josephsen, Justin B, Mercer, Judith S, Dorling, Jon S, Kattwinkel, John, Liu, Jiang-Qin, Nour, Islam, Atia, Hytham, Liley, Helen G, Rabe, Heike, Al-Wassia, Heidi K, Carroli, Guillermo, Polglase, Graeme R, Ram Mohan, Govindu, Dempsey, Eugene M, Okulu, Emel, Blank, Douglas A, Chawla, Deepak, Ruangkit, Chayatat, Tanprasertkul, Chamnan, De Paco Matallana, Catalina, Backes, Carl H, Schwaberger, Bernhard, Urlesberger, Berndt, KC, Ashish, te Pas, Arjan B, Katheria, Anup C, Thukral, Anu, George, Anu A, Webster, Angela C, Kugelman, Amir, Tan, Aidan C, Kumar, Aditi, Garg, Aashim, Duley, Lelia, and Askie, Lisa M

Published
2023
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15. Deferred cord clamping, cord milking, and immediate cord clamping at preterm birth: a systematic review and individual participant data meta-analysis

Author

Seidler, Anna Lene, Aberoumand, Mason, Hunter, Kylie E, Barba, Angie, Libesman, Sol, Williams, Jonathan G, Shrestha, Nipun, Aagerup, Jannik, Sotiropoulos, James X, Montgomery, Alan A, Gyte, Gillian M L, Garg, Aashim, Kumar, Aditi, Tan, Aidan C, Kugelman, Amir, Webster, Angela C, George, Anu A, Thukral, Anu, Katheria, Anup C, te Pas, Arjan B, KC, Ashish, Urlesberger, Berndt, Schwaberger, Bernhard, Backes, Carl H, De Paco Matallana, Catalina, Tanprasertkul, Chamnan, Ruangkit, Chayatat, Chawla, Deepak, Blank, Douglas A, Okulu, Emel, Dempsey, Eugene M, Ram Mohan, Govindu, Polglase, Graeme R, Carroli, Guillermo, Al-Wassia, Heidi K, Rabe, Heike, Liley, Helen G, Atia, Hytham, Nour, Islam, Liu, Jiang-Qin, Kattwinkel, John, Dorling, Jon S, Mercer, Judith S, Josephsen, Justin B, Fairchild, Karen D, Wallace, Kedra, Murphy, Kellie E, Robledo, Kristy P, Gharehbaghi, Manizheh M, de Veciana, Margarita, Goya, Maria, Kluckow, Martin, March, Melissa I, Meyer, Michael P, Mangla, Mukul K, Allam, Nahed E, Nasef, Nehad, Dipak, Niraj K, Andersson, Ola, Davis, Peter G, Pongmee, Pharuhad, Riley, Richard D, Simes, Robert John, Knol, Ronny, Arsan, Saadet, Shekhar, Shashank, Belk, Sheila S, Hosono, Shigeharu, Badurdeen, Shiraz, Pratesi, Simone, Dias, Sofia, Hooper, Stuart B, Sahoo, Tanushree, Debray, Thomas P A, Manoj, Varanattu C, Sundaram, Venkataseshan, Lago, Victor, Datta, Vikram, El-Naggar, Walid, Carlo, Waldemar A, Tarnow-Mordi, William O, Duley, Lelia, and Askie, Lisa M

Published
2023
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19. Caregivers' response to cardiorespiratory events in preterm infants in the NICU – A quantitative overview.

Author

Cramer, Sophie J. E., van Zanten, Henriette A., Salverda, Hylke H., Hooper, Stuart B., Dekker, Janneke, and te Pas, Arjan B.

Subjects
NEONATAL intensive care units, PREMATURE infants, CAREGIVERS, VIDEO recording, LONGITUDINAL method
Abstract

Aim: Cardiorespiratory events in preterm infants pose a major challenge in the Neonatal Intensive Care Unit as they require a prompt response. We aimed to describe caregivers' responses to these events. Methods: We performed a prospective observational study in 19 preterm infants (28 ± 2 weeks) on non‐invasive respiratory support using video recordings of the inside of the incubator for 72 (55–72) h. Caregivers' responses to these events were then identified from the videos. Results: We recorded and assessed 1851 cardiorespiratory events with a median duration of 11.0 (5.0–23.0) s. No response was observed in the majority of the events (91.5%). In the remaining 8.5% events, caregivers responded by pausing the alarm, adjusting devices and/or providing tactile stimulation with an average response time of 25.4 (13.8–35.9) s. Stimulation was the most observed response and was applied in 38 different ways. On average, stimulation lasted 18.7 (11.6–44.6) s and the cardiorespiratory events were resolved 30.6 (19.5–47.6) s after stimulation started. Conclusion: Our study showed that cardiorespiratory events are common in preterm infants in the NICU, but often not followed by intervention of the caregiver. The indication, timing and execution of responses to cardiorespiratory events is highly variable. [ABSTRACT FROM AUTHOR]

Published
2025
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20. Physiological-based cord clamping in very preterm infants: the Aeration, Breathing, Clamping 3 (ABC3) trial—study protocol for a multicentre randomised controlled trial

Author

Knol, Ronny, Brouwer, Emma, van den Akker, Thomas, DeKoninck, Philip L. J., Lopriore, Enrico, Onland, Wes, Vermeulen, Marijn J., van den Akker–van Marle, M. Elske, van Bodegom–Vos, Leti, de Boode, Willem P., van Kaam, Anton H., Reiss, Irwin K. M., Polglase, Graeme R., Hutten, G. Jeroen, Prins, Sandra A., Mulder, Estelle E. M., Hulzebos, Christian V., van Sambeeck, Sam J., van der Putten, Mayke E., Zonnenberg, Inge A., Hooper, Stuart B., and te Pas, Arjan B.

Published
2022
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23. Knee-to-chest flexion manoeuvre to reduce respiratory distress after planned caesarean birth: a feasibility study.

Author

Shirima, Febronia Laurence, Keus, Annemarie, Mmbaga, Blandina Theophil, Hooper, Stuart B., Mchome, Bariki, Pyuza, Jeremia Jackson, Van Den Akker, Thomas, and te Pas, Arjan B.

Subjects
RESOURCE-limited settings, NEONATAL intensive care units, FETAL physiology, FETAL growth retardation, POSITIVE pressure ventilation, APGAR score, PEER review of students, GUARDIAN & ward
Published
2024
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25. Physiological-Based Cord Clamping: When the Baby Is Ready for Clamping.

Author

te Pas, Arjan B., Knol, Ronny, Lopriore, Enrico, van den Akker, Thomas H., and Hooper, Stuart B.

Subjects
UMBILICAL cord clamping, PREMATURE infants, INFANTS, NEWBORN infants, CAREGIVERS
Abstract

Background: The timing of cord clamping has become a focal point for neonatal caregivers due to the promising outcomes associated with delayed cord clamping, which is a simple and cost-effective method to enhance the survival and well-being of preterm infants. While initially the rationale behind delaying clamping was to facilitate increased placental transfusion, research has unveiled additional hemodynamic benefits. Summary: Experimental studies have demonstrated improved circulatory transition when clamping is postponed until the lungs are adequately aerated. This suggests that infants requiring assistance during the transition phase may benefit from stabilization while still attached to the cord. The Aeration, Breathing, and then Clamping (ABC) project aimed to translate these experimental findings into clinical practice. Key Message: In this review, we will discuss the insights gained and lessons learned from the project's implementation. [ABSTRACT FROM AUTHOR]

Published
2024
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35. Assessing the influence of abdominal compression on time to return of circulation during resuscitation of asphyxiated newborn lambs: a randomised preclinical study.

Author

Polglase, Graeme R., Hwang, Colin, Blank, Douglas A., Badurdeen, Shiraz, Crossley, Kelly J., Kluckow, Martin, Gill, Andrew W., Camm, Emily, Galinsky, Robert, Brian, Yoveena, Hooper, Stuart B., and Roberts, Calum T.

Subjects
RETURN of spontaneous circulation, CORONARY circulation, LOW birth weight, VERY low birth weight, CHEST compressions, UMBILICAL cord clamping, CAROTID intima-media thickness
Published
2024
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43. The randomized Tracheal Occlusion To Accelerate Lung growth (TOTAL)-trials on fetal surgery for congenital diaphragmatic hernia: reanalysis using pooled data

Author

Van Calster, Ben, Benachi, Alexandra, Nicolaides, Kypros H., Gratacos, Eduard, Berg, Christoph, Persico, Nicola, Gardener, Glenn J., Belfort, Michael, Ville, Yves, Ryan, Greg, Johnson, Anthony, Sago, Haruhiko, Kosiński, Przemysław, Bagolan, Pietro, Van Mieghem, Tim, DeKoninck, Philip L.J., Russo, Francesca M., Hooper, Stuart B., and Deprest, Jan A.

Published
2022
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47. Influence of the chest wall on respiratory function at birth in near-term lambs.

Author

Diedericks, Cailin, Crossley, Kelly J., Davies, Indya M., Riddington, Paige J., Cannata, Ebony R., Martinez, Olivia L., Thiel, Alison M., te Pas, Arjan B., and Hooper, Stuart B.

Abstract

Airway liquid is cleared into lung tissue after birth, which becomes edematous and forces the chest wall to expand to accommodate both the cleared liquid and incoming air. This study investigated how changing chest wall mechanics affects respiratory function after birth in near-term lambs with different airway liquid volumes. Surgically instrumented near-term lambs (139 ± 2 days) were randomized into Control (n = 7) or Elevated Liquid (EL; n = 6) groups. Control lambs had lung liquid drained to simulate expected volumes following vaginal delivery. EL lambs had airway liquid drained and 30 mL/kg liquid returned to simulate expected airway liquid volumes after elective cesarean section. Lambs were delivered, transferred to a Perspex box, and ventilated (30 min). Pressure in the box was adjusted to apply positive (7-8 cmH2O above atmospheric pressure) or negative (7-8 cmH2O below atmospheric pressure) pressures for 30 min before pressures were reversed. External negative pressures expanded the chest wall, reduced chest wall compliance (CCW) and increased lung compliance (CL) in Control and EL lambs. External positive pressures compressed the chest wall, increased CCW and reduced CL in Control and EL lambs. External negative pressure improved pulmonary oxygen exchange, reducing the alveolar-arterial difference in oxygen (AaDO2) by 69 mmHg (95% CI [13, 125]; P = 0.016) in Control lambs and by 300 mmHg (95% CI [233, 367]; P < 0.001) in EL lambs. In contrast, external positive pressures impaired pulmonary gas exchange, increasing the AaDO2 by 179 mmHg (95% CI [73, 285]; P = 0.002) in Control and by 215 mmHg (95% CI [89, 343]; P < 0.001) in EL lambs. The application of external thoracic pressures influences respiratory function after birth. [ABSTRACT FROM AUTHOR]

Published
2024
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48. In utero ventilation induces lung parenchymal and vascular alterations in extremely preterm fetal sheep.

Author

Azman, Zahrah, Vidinopoulos, Kayla, Somers, Ainsley, Hooper, Stuart B., Zahra, Valerie A., Thiel, Alison M., Galinsky, Robert, Tran, Nhi T., Allison, Beth J., and Polglase, Graeme R.

Subjects
LUNGS, VENTILATION, TUMOR necrosis factors, PREMATURE infants, BRONCHOPULMONARY dysplasia, SHEEP
Abstract

Extremely preterm infants are often exposed to long durations of mechanical ventilation to facilitate gas exchange, resulting in ventilation-induced lung injury (VILI). New lung protective strategies utilizing noninvasive ventilation or low tidal volumes are now common but have not reduced rates of bronchopulmonary dysplasia. We aimed to determine the effect of 24 h of low tidal volume ventilation on the immature lung by ventilating preterm fetal sheep in utero. Preterm fetal sheep at 110 ± 1(SD) days’ gestation underwent sterile surgery for instrumentation with a tracheal loop to enable in utero mechanical ventilation (IUV). At 112 ± 1 days’ gestation, fetuses received either in utero mechanical ventilation (IUV, n = 10) targeting 3–5 mL/kg for 24 h, or no ventilation (CONT, n = 9). At necropsy, fetal lungs were collected to assess molecular and histological markers of lung inflammation and injury. IUV significantly increased lung mRNA expression of interleukin (IL)-1β, IL-6, IL-8, IL-10, and tumor necrosis factor (TNF) compared with CONT, and increased surfactant protein (SP)-A1, SP-B, and SP-C mRNA expression compared with CONT. IUV produced modest structural changes to the airways, including reduced parenchymal collagen and myofibroblast density. IUV increased pulmonary arteriole thickness compared with CONT but did not alter overall elastin or collagen content within the vasculature. In utero ventilation of an extremely preterm lung, even at low tidal volumes, induces lung inflammation and injury to the airways and vasculature. In utero ventilation may be an important model to isolate the confounding mechanisms of VILI to develop effective therapies for preterm infants requiring prolonged respiratory support. NEW & NOTEWORTHY Preterm infants often require prolonged respiratory support, but the relative contribution of ventilation to the development of lung injury is difficult to isolate. In utero mechanical ventilation allows for mechanistic investigations into ventilation-induced lung injury without confounding factors associated with sustaining extremely preterm lambs ex utero. Twenty-four hours of in utero ventilation, even at low tidal volumes, increased lung inflammation and surfactant protein expression and produced structural changes to the lung parenchyma and vasculature. [ABSTRACT FROM AUTHOR]

Published
2024
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