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Ahmad MA, Watananirun K, De Bie F, Page AS, De Coppi P, Vergote S, Vercauteren T, Vander Poorten E, Joyeux L, Deprest J. High-fidelity, low-cost synthetic training model for fetoscopic spina bifida repair. Am J Obstet Gynecol MFM 2024; 6:101278. [PMID: 38232818 DOI: 10.1016/j.ajogmf.2024.101278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 12/11/2023] [Accepted: 01/08/2024] [Indexed: 01/19/2024]
Abstract
BACKGROUND Fetoscopic spina bifida repair is increasingly being practiced, but limited skill acquisition poses a barrier to widespread adoption. Extensive training in relevant models, including both ex vivo and in vivo models may help. To address this, a synthetic training model that is affordable, realistic, and that allows skill analysis would be useful. OBJECTIVE This study aimed to create a high-fidelity model for training in the essential neurosurgical steps of fetoscopic spina bifida repair using synthetic materials. In addition, we aimed to obtain a cheap and easily reproducible model. STUDY DESIGN We developed a 3-layered, silicon-based model that resemble the anatomic layers of a typical myelomeningocele lesion. It allows for filling of the cyst with fluid and conducting a water tightness test after repair. A compliant silicon ball mimics the uterine cavity and is fixed to a solid 3-dimensional printed base. The fetal back with the lesion (single-use) is placed inside the uterine ball, which is reusable and repairable to allow for practicing port insertion and fixation multiple times. Following cannula insertion, the uterus is insufflated and a clinical fetoscopic or robotic or prototype instruments can be used. Three skilled endoscopic surgeons each did 6 simulated fetoscopic repairs using the surgical steps of an open repair. The primary outcome was surgical success, which was determined by water tightness of the repair, operation time <180 minutes and an Objective Structured Assessment of Technical Skills score of ≥18 of 25. Skill retention was measured using a competence cumulative sum analysis of a composite binary outcome of surgical success. Secondary outcomes were cost and fabrication time of the model. RESULTS We made a model that can be used to simulate the neurosurgical steps of spina bifida repair, including anatomic details, port insertion, placode release and descent, undermining of skin and muscular layer, and endoscopic suturing. The model was made using reusable 3-dimensional printed molds and easily accessible materials. The 1-time startup cost was €211, and each single-use, simulated myelomeningocele lesion cost €9.5 in materials and 50 minutes of working time. Two skilled endoscopic surgeons performed 6 simulated, 3-port fetoscopic repairs, whereas a third used a Da Vinci surgical robot. Operation times decreased by more than 30% from the first to the last trial. Six experiments per surgeon did not show an obvious Objective Structured Assessment of Technical Skills score improvement. Competence cumulative sum analysis confirmed competency for each surgeon. CONCLUSION This high-fidelity, low-cost spina bifida model allows simulated dissection and closure of a myelomeningocele lesion. VIDEO ABSTRACT.
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Affiliation(s)
- Mirza A Ahmad
- Department of Mechanical Engineering, KU Leuven, Leuven, Belgium (Mr Ahmad and Dr Vander Poorten); Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium (Mr Ahmad and Drs Watananirun, De Bie, Page, Vergote, Vercauteren, Joyeux, and Deprest); Department of Development and Regeneration, Cluster Woman and Child, Group Biomedical Sciences, KU Leuven, Leuven, Belgium (Mr Ahmad and Drs, Watananirun, De Bie, Page, Vergote, Vercauteren, Joyeux, and Deprest)
| | - Kanokwaroon Watananirun
- Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium (Mr Ahmad and Drs Watananirun, De Bie, Page, Vergote, Vercauteren, Joyeux, and Deprest); Department of Development and Regeneration, Cluster Woman and Child, Group Biomedical Sciences, KU Leuven, Leuven, Belgium (Mr Ahmad and Drs, Watananirun, De Bie, Page, Vergote, Vercauteren, Joyeux, and Deprest)
| | - Felix De Bie
- Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium (Mr Ahmad and Drs Watananirun, De Bie, Page, Vergote, Vercauteren, Joyeux, and Deprest); Department of Development and Regeneration, Cluster Woman and Child, Group Biomedical Sciences, KU Leuven, Leuven, Belgium (Mr Ahmad and Drs, Watananirun, De Bie, Page, Vergote, Vercauteren, Joyeux, and Deprest)
| | - Ann-Sophie Page
- Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium (Mr Ahmad and Drs Watananirun, De Bie, Page, Vergote, Vercauteren, Joyeux, and Deprest); Department of Development and Regeneration, Cluster Woman and Child, Group Biomedical Sciences, KU Leuven, Leuven, Belgium (Mr Ahmad and Drs, Watananirun, De Bie, Page, Vergote, Vercauteren, Joyeux, and Deprest)
| | - Paolo De Coppi
- Institute for Child and Women's Health, University College London, London, United Kingdom (Drs De Coppi and Deprest); National Institute for Health and Care Research Biomedical Research Center, Specialist Neonatal and Paediatric Surgery, Great Ormond Street Hospital, London, United Kingdom (Dr De Coppi); School of Biomedical Engineering & Imaging Sciences, King's College London, London, United Kingdom (Drs De Coppi and Vercauteren)
| | - Simen Vergote
- Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium (Mr Ahmad and Drs Watananirun, De Bie, Page, Vergote, Vercauteren, Joyeux, and Deprest); Department of Development and Regeneration, Cluster Woman and Child, Group Biomedical Sciences, KU Leuven, Leuven, Belgium (Mr Ahmad and Drs, Watananirun, De Bie, Page, Vergote, Vercauteren, Joyeux, and Deprest)
| | - Tom Vercauteren
- Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium (Mr Ahmad and Drs Watananirun, De Bie, Page, Vergote, Vercauteren, Joyeux, and Deprest); Department of Development and Regeneration, Cluster Woman and Child, Group Biomedical Sciences, KU Leuven, Leuven, Belgium (Mr Ahmad and Drs, Watananirun, De Bie, Page, Vergote, Vercauteren, Joyeux, and Deprest); School of Biomedical Engineering & Imaging Sciences, King's College London, London, United Kingdom (Drs De Coppi and Vercauteren)
| | - Emmanuel Vander Poorten
- Department of Mechanical Engineering, KU Leuven, Leuven, Belgium (Mr Ahmad and Dr Vander Poorten)
| | - Luc Joyeux
- Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium (Mr Ahmad and Drs Watananirun, De Bie, Page, Vergote, Vercauteren, Joyeux, and Deprest); Department of Development and Regeneration, Cluster Woman and Child, Group Biomedical Sciences, KU Leuven, Leuven, Belgium (Mr Ahmad and Drs, Watananirun, De Bie, Page, Vergote, Vercauteren, Joyeux, and Deprest)
| | - Jan Deprest
- Department of Obstetrics and Gynecology, University Hospitals Leuven, Leuven, Belgium (Mr Ahmad and Drs Watananirun, De Bie, Page, Vergote, Vercauteren, Joyeux, and Deprest); Department of Development and Regeneration, Cluster Woman and Child, Group Biomedical Sciences, KU Leuven, Leuven, Belgium (Mr Ahmad and Drs, Watananirun, De Bie, Page, Vergote, Vercauteren, Joyeux, and Deprest); Institute for Child and Women's Health, University College London, London, United Kingdom (Drs De Coppi and Deprest).
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Ahmad MA, Weiler Y, Joyeux L, Eixarch E, Vercauteren T, Ourselin S, Deprest J, Vander Poorten E. 3D vs. 2D simulated fetoscopy for spina bifida repair: a quantitative motion analysis. Sci Rep 2023; 13:20951. [PMID: 38016964 PMCID: PMC10684542 DOI: 10.1038/s41598-023-47531-9] [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: 02/19/2023] [Accepted: 11/14/2023] [Indexed: 11/30/2023] Open
Abstract
3D imaging technology is becoming more prominent every day. However, more validation is needed to understand the actual benefit of 3D versus conventional 2D vision. This work quantitatively investigates whether experts benefit from 3D vision during minimally invasive fetoscopic spina bifida (fSB) repair. A superiority study was designed involving one expert team ([Formula: see text] procedures prior) who performed six 2D and six 3D fSB repair simulations in a high-fidelity animal training model, using 3-port access. The 6D motion of the instruments was recorded. Among the motion metrics are total path length, smoothness, maximum speed, the modified Spectral Arc Length (SPARC), and Log Dimensionless Jerk (LDLJ). The primary clinical outcome is operation time (power 90%, 5% significance) using Sealed Envelope Ltd. 2012. Secondary clinical outcomes are water tightness of the repair, CO[Formula: see text] insufflation volume, and OSATS score. Findings show that total path length and LDLJ are considerably different. Operation time during 3D vision was found to be significantly shorter compared to 2D vision ([Formula: see text] vs. [Formula: see text] min; p [Formula: see text] 0.026). These results suggest enhanced performance with 3D vision during interrupted suturing in fetoscopic SBA repair. To confirm these results, a larger-scale follow-up study involving multiple experts and novice surgeons is recommended.
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Affiliation(s)
- Mirza Awais Ahmad
- Department of Mechanical Engineering Sciences, Catholic University of Leuven, 3000, Leuven, Belgium.
- Obstetrics and Gynaecology, University Hospital of Leuven, 3000, Leuven, Belgium.
| | - Yolan Weiler
- Department of Mechanical Engineering Sciences, Catholic University of Leuven, 3000, Leuven, Belgium
| | - Luc Joyeux
- Obstetrics and Gynaecology, University Hospital of Leuven, 3000, Leuven, Belgium
| | - Elisenda Eixarch
- BCNatal Fetal Medicine Research Center, Hospital Clinic, Hospital Sant Joan de Déu, Universitat de Barcelona, Barcelona, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centre for Biomedical Research on Rare Diseases (CIBERER), Barcelona, Spain
| | - Tom Vercauteren
- Department of Imaging and Biomedical Engineering, Kings College, London, WC2R 2LS, UK
| | - Sebastien Ourselin
- Department of Imaging and Biomedical Engineering, Kings College, London, WC2R 2LS, UK
| | - Jan Deprest
- Obstetrics and Gynaecology, University Hospital of Leuven, 3000, Leuven, Belgium
| | - Emmanuel Vander Poorten
- Department of Mechanical Engineering Sciences, Catholic University of Leuven, 3000, Leuven, Belgium
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da Costa MDS, Nicacio JM, Dastoli PA, Suriano IC, Sarmento SGP, Barbosa MM, Moron AF, Cavalheiro S. Training model for the fetal myelomeningocele correction with multiportal endoscopic technique. Childs Nerv Syst 2023; 39:3131-3136. [PMID: 36840750 DOI: 10.1007/s00381-023-05893-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 02/20/2023] [Indexed: 02/26/2023]
Abstract
PURPOSE The recent history of myelomeningocele has shown that treatment during the fetal life may reduce the risk of developing hydrocephalus in individuals by approximately 50%. Thus, a significant advancement involves fetal surgery performed through an endoscopic technique in which portals are placed to introduce the forceps and laparoscopic instruments. However, the development of this technique requires training; therefore, this study aimed to develop a training model for fetal myelomeningocele repair technique with multi-portal endoscopy. METHODS Two stages of endoscopic technique development were performed. The first stage consisted of exercises in order to familiarize the surgeon with 2D-vision endoscopic surgery, associated with the application of exercises focused on surgical skills, such as the development of laparoscopic knots in a synthetic model. The second stage involved the creation and application of the stages of myelomeningocele closure with a non-living animal model consisting of a chicken breast to simulate the myelomeningocele and a basketball to simulate the gravid uterus, in which perforations were made to introduce vascular introducers (portals) that, as in vivo, are used as portals (trocars) for the introduction of laparoscopic instruments. Overall, two different scenarios with three portals and two portals were tested. RESULTS In three-portal simulator, the triangular apex trocar was used for the introduction of 4-mm 0° or 30° optics or even Minop type neurodoscope (Aesculap®, Germany) that was operated by the assistant surgeon; the other two portals are used for the introduction of laparoscopic instruments. Thus, the surgeon is able to perform maneuvers bimanually since dissection to laparoscopic sutures. In two-portal simulator, the surgeon and assistant stay side by side and one of the portals is used for the optic and the other for the laparoscopic instruments. There is no possibility of bimanual dissection in this method. CONCLUSION Realistic simulation models for endoscopic fetal surgery for myelomeningocele correction are easily performed and help develop the necessary skills for fetal surgery teams.
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Affiliation(s)
- Marcos Devanir Silva da Costa
- Department of Neurosurgery, Universidade Federal de Sao Paulo, Rua Napoleão de Barros, 715, 6th Floor, São Paulo, SP, 04024-002, Brazil.
- Department of Fetal Neurosurgery, Hospital e Maternidade Santa Joana, São Paulo, SP, Brazil.
| | - Jardel Mendonça Nicacio
- Department of Neurosurgery, Universidade Federal de Sao Paulo, Rua Napoleão de Barros, 715, 6th Floor, São Paulo, SP, 04024-002, Brazil
- Department of Fetal Neurosurgery, Hospital e Maternidade Santa Joana, São Paulo, SP, Brazil
| | - Patricia Alessandra Dastoli
- Department of Neurosurgery, Universidade Federal de Sao Paulo, Rua Napoleão de Barros, 715, 6th Floor, São Paulo, SP, 04024-002, Brazil
- Department of Fetal Neurosurgery, Hospital e Maternidade Santa Joana, São Paulo, SP, Brazil
| | - Italo Capraro Suriano
- Department of Neurosurgery, Universidade Federal de Sao Paulo, Rua Napoleão de Barros, 715, 6th Floor, São Paulo, SP, 04024-002, Brazil
- Department of Fetal Neurosurgery, Hospital e Maternidade Santa Joana, São Paulo, SP, Brazil
| | - Stéphanno Gomes Pereira Sarmento
- Department of Obstetrics, Universidade Federal de Sao Paulo, São Paulo, SP, Brazil
- Department of Fetal Medicine, Hospital e Maternidade Santa Joana, São Paulo, SP, Brazil
| | - Mauricio Mendes Barbosa
- Department of Obstetrics, Universidade Federal de Sao Paulo, São Paulo, SP, Brazil
- Department of Fetal Medicine, Hospital e Maternidade Santa Joana, São Paulo, SP, Brazil
| | - Antonio Fernandes Moron
- Department of Obstetrics, Universidade Federal de Sao Paulo, São Paulo, SP, Brazil
- Department of Fetal Medicine, Hospital e Maternidade Santa Joana, São Paulo, SP, Brazil
| | - Sergio Cavalheiro
- Department of Neurosurgery, Universidade Federal de Sao Paulo, Rua Napoleão de Barros, 715, 6th Floor, São Paulo, SP, 04024-002, Brazil
- Department of Fetal Neurosurgery, Hospital e Maternidade Santa Joana, São Paulo, SP, Brazil
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Vergote S, Joyeux L, Basurto D, Bleeser T, Valenzuela I, Valentyn B, Emam D, Watananirun K, De Bie FR, Aertsen M, van der Merwe J, Deprest J. Duration of fetoscopic spina bifida repair does not affect the central nervous system in fetal lambs. Am J Obstet Gynecol MFM 2023; 5:101156. [PMID: 37714330 DOI: 10.1016/j.ajogmf.2023.101156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/08/2023] [Accepted: 09/09/2023] [Indexed: 09/17/2023]
Abstract
BACKGROUND Prenatal spina bifida aperta repair improves neurologic outcomes yet comes with a significant risk of prematurity and uterine scar-related complications. To reduce such complications, different fetoscopic techniques, for example, with varying numbers of ports, are being explored. This has an effect on the duration of the procedure, potentially affecting central nervous system development. Both the condition and anesthesia can affect the central nervous system, particularly the hippocampus, a region crucial for prospective and episodic memory. Previous animal studies have shown the potential influence of anesthesia, premature delivery, and maternal surgery during pregnancy on this area. OBJECTIVE This study aimed to compare the effects of 2- vs 3-port fetoscopic spina bifida aperta repair in the fetal lamb model using neuron count of the hippocampus as the primary outcome. STUDY DESIGN Based on the hippocampal neuron count from previous lamb experiments, we calculated that we required 5 animals per group to achieve a statistical power of ≥ 80%. A spina bifida aperta defect was developed in fetal lambs at 75 days of gestation (term: 145 days). At 100 days, fetuses underwent either a 2-port or 3-port fetoscopic repair. At 143 days, all surviving fetuses were delivered by cesarean delivery, anesthetized, and transcardially perfused with a mixture of formaldehyde and gadolinium. Next, they underwent neonatal brain and spine magnetic resonance imaging after which these organs were harvested for histology. Hippocampus, frontal cortex, caudate nucleus, and cerebellum samples were immunostained to identify neurons, astrocytes, microglia, and markers associated with cell proliferation, myelination, and synapses. The degree of hindbrain herniation and the ventricular diameter were measured on magnetic resonance images and volumes of relevant brain and medulla areas were segmented. RESULTS Both treatment groups included 5 fetuses and 9 unoperated littermates served as normal controls. The durations for both skin-to-skin (341±31 vs 287±40 minutes; P=.04) and fetal surgery (183±30 vs 128±22; P=.01) were longer for the 2-port approach than for the 3-port approach. There was no significant difference in neuron density in the hippocampus, frontal cortex, and cerebellum. In the caudate nucleus, the neuron count was higher in the 2-port group (965±156 vs 767±92 neurons/mm2; P=.04). There were neither differences in proliferation, astrogliosis, synaptophysin, or myelin. The tip of the cerebellar vermis was closer to the foramen magnum in animals undergoing the 2-port approach than in animals undergoing the 3-port approach (-0.72±0.67 vs -2.47±0.91 mm; P=.009). There was no significant difference in the ratio of the hippocampus, caudate nucleus, or cerebellar volume to body weight. For the spine, no difference was noted in spine volume-to-body weight ratio for the lower (L1-L2), middle (L3-L4), and higher (L5-L6) levels. Compared with controls, in repaired animals, the cerebellar vermis tip laid closer to the foramen magnum, parietal ventricles were enlarged, and medulla volumes were reduced. CONCLUSION In the experimental spina bifida fetal lamb model, a 2-port repair took 40% longer than a 3-port repair. However, there was no indication of any relevant morphologic differences in the fetal brain.
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Affiliation(s)
- Simen Vergote
- Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium (Drs Vergote, Joyeux, Basurto, Bleeser, and Valenzuela, Ms Valentyn, and Drs Emam, Watananirun, De Bie, van der Merwe, and Deprest); Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, Katholieke Universiteit Leuven, Leuven, Belgium (Drs Vergote, Joyeux, Basurto, Bleeser, and Valenzuela, Ms Valentyn, and Drs Emam, Watananirun, De Bie, van der Merwe, and Deprest)
| | - Luc Joyeux
- Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium (Drs Vergote, Joyeux, Basurto, Bleeser, and Valenzuela, Ms Valentyn, and Drs Emam, Watananirun, De Bie, van der Merwe, and Deprest); Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, Katholieke Universiteit Leuven, Leuven, Belgium (Drs Vergote, Joyeux, Basurto, Bleeser, and Valenzuela, Ms Valentyn, and Drs Emam, Watananirun, De Bie, van der Merwe, and Deprest); Division of Pediatric Surgery, Department of Surgery, Texas Children's Hospital, Baylor College of Medicine, Houston, TX (Dr Joyeux)
| | - David Basurto
- Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium (Drs Vergote, Joyeux, Basurto, Bleeser, and Valenzuela, Ms Valentyn, and Drs Emam, Watananirun, De Bie, van der Merwe, and Deprest); Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, Katholieke Universiteit Leuven, Leuven, Belgium (Drs Vergote, Joyeux, Basurto, Bleeser, and Valenzuela, Ms Valentyn, and Drs Emam, Watananirun, De Bie, van der Merwe, and Deprest); Department of Fetal Medicine and Fetal Surgery, National Institute of Perinatology, Mexico City, Mexico (Dr Basurto)
| | - Tom Bleeser
- Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium (Drs Vergote, Joyeux, Basurto, Bleeser, and Valenzuela, Ms Valentyn, and Drs Emam, Watananirun, De Bie, van der Merwe, and Deprest); Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, Katholieke Universiteit Leuven, Leuven, Belgium (Drs Vergote, Joyeux, Basurto, Bleeser, and Valenzuela, Ms Valentyn, and Drs Emam, Watananirun, De Bie, van der Merwe, and Deprest); Department of Anaesthesiology, Universitair Ziekenhuis Leuven, Leuven, Belgium (Dr Bleeser); Department of Cardiovascular Sciences, Biomedical Sciences, Katholieke Universiteit Leuven, Leuven, Belgium (Dr Bleeser)
| | - Ignacio Valenzuela
- Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium (Drs Vergote, Joyeux, Basurto, Bleeser, and Valenzuela, Ms Valentyn, and Drs Emam, Watananirun, De Bie, van der Merwe, and Deprest); Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, Katholieke Universiteit Leuven, Leuven, Belgium (Drs Vergote, Joyeux, Basurto, Bleeser, and Valenzuela, Ms Valentyn, and Drs Emam, Watananirun, De Bie, van der Merwe, and Deprest)
| | - Britt Valentyn
- Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium (Drs Vergote, Joyeux, Basurto, Bleeser, and Valenzuela, Ms Valentyn, and Drs Emam, Watananirun, De Bie, van der Merwe, and Deprest); Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, Katholieke Universiteit Leuven, Leuven, Belgium (Drs Vergote, Joyeux, Basurto, Bleeser, and Valenzuela, Ms Valentyn, and Drs Emam, Watananirun, De Bie, van der Merwe, and Deprest)
| | - Doaa Emam
- Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium (Drs Vergote, Joyeux, Basurto, Bleeser, and Valenzuela, Ms Valentyn, and Drs Emam, Watananirun, De Bie, van der Merwe, and Deprest); Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, Katholieke Universiteit Leuven, Leuven, Belgium (Drs Vergote, Joyeux, Basurto, Bleeser, and Valenzuela, Ms Valentyn, and Drs Emam, Watananirun, De Bie, van der Merwe, and Deprest); Department of Obstetrics and Gynaecology, Tanta University Hospitals, Tanta, Egypt (Dr Emam)
| | - Kanokwaroon Watananirun
- Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium (Drs Vergote, Joyeux, Basurto, Bleeser, and Valenzuela, Ms Valentyn, and Drs Emam, Watananirun, De Bie, van der Merwe, and Deprest); Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, Katholieke Universiteit Leuven, Leuven, Belgium (Drs Vergote, Joyeux, Basurto, Bleeser, and Valenzuela, Ms Valentyn, and Drs Emam, Watananirun, De Bie, van der Merwe, and Deprest); Faculty of Medicine, Department of Obstetrics and Gynecology, Siriraj Hospital, Mahidol University, Bangkok, Thailand (Dr Watananirun)
| | - Felix R De Bie
- Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium (Drs Vergote, Joyeux, Basurto, Bleeser, and Valenzuela, Ms Valentyn, and Drs Emam, Watananirun, De Bie, van der Merwe, and Deprest); Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, Katholieke Universiteit Leuven, Leuven, Belgium (Drs Vergote, Joyeux, Basurto, Bleeser, and Valenzuela, Ms Valentyn, and Drs Emam, Watananirun, De Bie, van der Merwe, and Deprest)
| | - Michael Aertsen
- Department of Imaging and Pathology, Clinical Department of Radiology, University Hospitals Katholieke Universiteit Leuven, Leuven, Belgium (Dr Aertsen)
| | - Johannes van der Merwe
- Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium (Drs Vergote, Joyeux, Basurto, Bleeser, and Valenzuela, Ms Valentyn, and Drs Emam, Watananirun, De Bie, van der Merwe, and Deprest); Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, Katholieke Universiteit Leuven, Leuven, Belgium (Drs Vergote, Joyeux, Basurto, Bleeser, and Valenzuela, Ms Valentyn, and Drs Emam, Watananirun, De Bie, van der Merwe, and Deprest)
| | - Jan Deprest
- Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium (Drs Vergote, Joyeux, Basurto, Bleeser, and Valenzuela, Ms Valentyn, and Drs Emam, Watananirun, De Bie, van der Merwe, and Deprest); Department of Development and Regeneration, Cluster Woman and Child, Biomedical Sciences, Katholieke Universiteit Leuven, Leuven, Belgium (Drs Vergote, Joyeux, Basurto, Bleeser, and Valenzuela, Ms Valentyn, and Drs Emam, Watananirun, De Bie, van der Merwe, and Deprest); Institute for Women's Health, University College London, London, United Kingdom (Dr Deprest).
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Joyeux L, Basurto D, Bleeser T, Van der Veeken L, Vergote S, Kunpalin Y, Trigo L, Corno E, De Bie FR, De Coppi P, Ourselin S, Van Calenbergh F, Hooper SB, Rex S, Deprest J. Fetoscopic insufflation of heated-humidified carbon dioxide during simulated spina bifida repair is safe under controlled anesthesia in the fetal lamb. Prenat Diagn 2022; 42:180-191. [PMID: 35032031 DOI: 10.1002/pd.6093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 12/22/2021] [Accepted: 01/08/2022] [Indexed: 11/08/2022]
Abstract
OBJECTIVE To assess the safety of Partial-Amniotic-Insufflation-of-heated-humidified-CO2 (hPACI) during fetoscopic spina bifida repair (fSB-repair). METHOD A simulated fSB-repair through an exteriorized uterus under hPACI was performed in 100-day fetal lambs (term = 145 days) under a laboratory anesthesia protocol (n = 5; group 1) which is known to induce maternal-fetal acidosis and hypercapnia. Since these may not occur clinically, we applied a clinical anesthesia protocol (n = 5; group 2), keeping maternal parameters within physiological conditions, that is, controlled maternal arterial carbon dioxide (CO2) pressure (pCO2 = 30 mmHg), blood pressure (≥67 mmHg), and temperature (37.1-39.8°C). Our superiority study used fetal pH as the primary outcome. RESULTS Compared to group 1, controlled anesthesia normalized fetal pH (7.23 ± 0.02 vs. 7.36 ± 0.02, p < 0.001), pCO2 (70.0 ± 9.1 vs. 43.0 ± 1.0 mmHg, p = 0.011) and bicarbonate (27.8 ± 1.1 vs. 24.0 ± 0.9 mmol/L, p = 0.071) at baseline. It kept them within clinically acceptable limits (pH ≥ 7.23, pCO2 ≤ 70 mmHg, bicarbonate ≤ 30 mm/L) for ≥120 min of hPACI as opposed to ≤30 min in group one. Fetal pO2 and lactate were comparable between groups and generally within normal range. Fetal brain histology demonstrated fewer apoptotic cells and higher neuronal density in the prefrontal cortex in group two. There was no difference in fetal membrane inflammation, which was mild. CONCLUSION Fetoscopic insufflation of heated-humidified CO2 during simulated fSB-repair through an exteriorized uterus can be done safely under controlled anesthesia.
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Affiliation(s)
- Luc Joyeux
- My FetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium.,Center for Surgical Technologies, Faculty of Medicine, KU Leuven, Leuven, Belgium.,Department of Obstetrics & Gynecology, University Hospitals Leuven, Leuven, Belgium
| | - David Basurto
- My FetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium.,Center for Surgical Technologies, Faculty of Medicine, KU Leuven, Leuven, Belgium.,Department of Obstetrics & Gynecology, University Hospitals Leuven, Leuven, Belgium
| | - Tom Bleeser
- My FetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium.,Center for Surgical Technologies, Faculty of Medicine, KU Leuven, Leuven, Belgium.,Department of Anesthesiology, University Hospitals Leuven, Leuven, Belgium
| | - Lennart Van der Veeken
- My FetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium.,Center for Surgical Technologies, Faculty of Medicine, KU Leuven, Leuven, Belgium.,Department of Obstetrics & Gynecology, University Hospitals Leuven, Leuven, Belgium
| | - Simen Vergote
- My FetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium.,Center for Surgical Technologies, Faculty of Medicine, KU Leuven, Leuven, Belgium.,Department of Obstetrics & Gynecology, University Hospitals Leuven, Leuven, Belgium
| | - Yada Kunpalin
- My FetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium.,Institute of Women's Health, University College London Hospitals, London, UK
| | - Lucas Trigo
- My FetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium.,BCNatal, Fetal Medicine Research Center, Hospital Clinic and Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain.,Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Enrico Corno
- My FetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium
| | - Felix R De Bie
- My FetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium.,Center for Surgical Technologies, Faculty of Medicine, KU Leuven, Leuven, Belgium.,Center for Fetal Diagnosis and Treatment, The Children's Hospital of Philadelphia, and the Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Paolo De Coppi
- My FetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium.,Center for Surgical Technologies, Faculty of Medicine, KU Leuven, Leuven, Belgium.,Department of Obstetrics & Gynecology, University Hospitals Leuven, Leuven, Belgium.,Specialist Neonatal and Pediatric Surgery Unit, Great Ormond Street Hospital, University College London Hospitals, NHS Trust, London, UK
| | - Sebastien Ourselin
- School of Biomedical Engineering & Imaging Sciences, King's College London, London, UK
| | | | - Stuart B Hooper
- The Ritchie Centre, Hudson Institute of Medical Research, Melbourne, Victoria, Australia.,Department of Obstetrics and Gynaecology, Monash University, Melbourne, Victoria, Australia
| | - Steffen Rex
- Department of Anesthesiology, University Hospitals Leuven, Leuven, Belgium
| | - Jan Deprest
- My FetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium.,Center for Surgical Technologies, Faculty of Medicine, KU Leuven, Leuven, Belgium.,Department of Obstetrics & Gynecology, University Hospitals Leuven, Leuven, Belgium.,Institute of Women's Health, University College London Hospitals, London, UK
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6
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Joyeux L, Belfort MA, De Coppi P, Basurto D, Valenzuela I, King A, De Catte L, Shamshirsaz AA, Deprest J, Keswani SG. Complex gastroschisis: a new indication for fetal surgery? ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2021; 58:804-812. [PMID: 34468062 DOI: 10.1002/uog.24759] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 08/16/2021] [Accepted: 08/19/2021] [Indexed: 06/13/2023]
Abstract
Gastroschisis (GS) is a congenital abdominal wall defect, in which the bowel eviscerates from the abdominal cavity. It is a non-lethal isolated anomaly and its pathogenesis is hypothesized to occur as a result of two hits: primary rupture of the 'physiological' umbilical hernia (congenital anomaly) followed by progressive damage of the eviscerated bowel (secondary injury). The second hit is thought to be caused by a combination of mesenteric ischemia from constriction in the abdominal wall defect and prolonged amniotic fluid exposure with resultant inflammatory damage, which eventually leads to bowel dysfunction and complications. GS can be classified as either simple or complex, with the latter being complicated by a combination of intestinal atresia, stenosis, perforation, volvulus and/or necrosis. Complex GS requires multiple neonatal surgeries and is associated with significantly greater postnatal morbidity and mortality than is simple GS. The intrauterine reduction of the eviscerated bowel before irreversible damage occurs and subsequent defect closure may diminish or potentially prevent the bowel damage and other fetal and neonatal complications associated with this condition. Serial prenatal amnioexchange has been studied in cases with GS as a potential intervention but never adopted because of its unproven benefit in terms of survival and bowel and lung function. We believe that recent advances in prenatal diagnosis and fetoscopic surgery justify reconsideration of the antenatal management of complex GS under the rubric of the criteria for fetal surgery established by the International Fetal Medicine and Surgery Society (IFMSS). Herein, we discuss how conditions for fetoscopic repair of complex GS might be favorable according to the IFMSS criteria, including an established natural history, an accurate prenatal diagnosis, absence of fully effective perinatal treatment due to prolonged need for neonatal intensive care, experimental evidence for fetoscopic repair and maternal and fetal safety of fetoscopy in expert fetal centers. Finally, we propose a research agenda that will help overcome barriers to progress and provide a pathway toward clinical implementation. © 2021 International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- L Joyeux
- MyFetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium
- Center for Surgical Technologies, Faculty of Medicine, KU Leuven, Leuven, Belgium
- Department of Obstetrics and Gynecology, Division Woman and Child, Fetal Medicine Unit, University Hospitals Leuven, Leuven, Belgium
- Department of Pediatric Surgery, Queen Fabiola Children's University Hospital, Brussels, Belgium
- Michael E. DeBakey Department of Surgery, Texas Children's Hospital and Baylor College of Medicine, Houston, TX, USA
| | - M A Belfort
- Michael E. DeBakey Department of Surgery, Texas Children's Hospital and Baylor College of Medicine, Houston, TX, USA
- Department of Obstetrics and Gynecology, Division Maternal-Fetal Medicine, Texas Children's Hospital and Baylor College of Medicine, Houston, TX, USA
- Texas Children's Fetal Center, Texas Children's Hospital and Baylor College of Medicine, Houston, TX, USA
| | - P De Coppi
- MyFetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium
- Center for Surgical Technologies, Faculty of Medicine, KU Leuven, Leuven, Belgium
- Department of Obstetrics and Gynecology, Division Woman and Child, Fetal Medicine Unit, University Hospitals Leuven, Leuven, Belgium
- Specialist Neonatal and Paediatric Surgery Unit and NIHR Biomedical Research Center, Great Ormond Street Hospital, and Great Ormond Street Institute of Child Health, University College London, London, UK
| | - D Basurto
- MyFetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium
- Center for Surgical Technologies, Faculty of Medicine, KU Leuven, Leuven, Belgium
- Department of Obstetrics and Gynecology, Division Woman and Child, Fetal Medicine Unit, University Hospitals Leuven, Leuven, Belgium
| | - I Valenzuela
- MyFetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium
- Center for Surgical Technologies, Faculty of Medicine, KU Leuven, Leuven, Belgium
| | - A King
- Michael E. DeBakey Department of Surgery, Texas Children's Hospital and Baylor College of Medicine, Houston, TX, USA
- Texas Children's Fetal Center, Texas Children's Hospital and Baylor College of Medicine, Houston, TX, USA
- Department of Pediatric Surgery, Texas Children's Hospital and Baylor College of Medicine, Houston, TX, USA
| | - L De Catte
- Department of Obstetrics and Gynecology, Division Woman and Child, Fetal Medicine Unit, University Hospitals Leuven, Leuven, Belgium
| | - A A Shamshirsaz
- Michael E. DeBakey Department of Surgery, Texas Children's Hospital and Baylor College of Medicine, Houston, TX, USA
- Department of Obstetrics and Gynecology, Division Maternal-Fetal Medicine, Texas Children's Hospital and Baylor College of Medicine, Houston, TX, USA
- Texas Children's Fetal Center, Texas Children's Hospital and Baylor College of Medicine, Houston, TX, USA
| | - J Deprest
- MyFetUZ Fetal Research Center, Department of Development and Regeneration, Biomedical Sciences, KU Leuven, Leuven, Belgium
- Center for Surgical Technologies, Faculty of Medicine, KU Leuven, Leuven, Belgium
- Department of Obstetrics and Gynecology, Division Woman and Child, Fetal Medicine Unit, University Hospitals Leuven, Leuven, Belgium
- Institute of Women's Health, University College London Hospitals, London, UK
| | - S G Keswani
- Michael E. DeBakey Department of Surgery, Texas Children's Hospital and Baylor College of Medicine, Houston, TX, USA
- Texas Children's Fetal Center, Texas Children's Hospital and Baylor College of Medicine, Houston, TX, USA
- Department of Pediatric Surgery, Texas Children's Hospital and Baylor College of Medicine, Houston, TX, USA
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Abstract
OBJECTIVE This systematic review aims to examine the use of standard-setting methods in the context of simulation-based training of surgical procedures. SUMMARY OF BACKGROUND Simulation-based training is increasingly used in surgical education. However, it is important to determine which level of competency trainees must reach during simulation-based training before operating on patients. Therefore, pass/fail standards must be established using systematic, transparent, and valid methods. METHODS Systematic literature search was done in four databases (Ovid MEDLINE, Embase, Web of Science, and Cochrane Library). Original studies investigating simulation-based assessment of surgical procedures with application of a standard setting were included. Quality of evidence was appraised using GRADE. RESULTS Of 24,299 studies identified by searches, 232 studies met the inclusion criteria. Publications using already established standard settings were excluded (N = 70), resulting in 162 original studies included in the final analyses. Most studies described how the standard setting was determined (N = 147, 91%) and most used the mean or median performance score of experienced surgeons (n = 65, 40%) for standard setting. We found considerable differences across most of the studies regarding study design, set-up, and expert level classification. The studies were appraised as having low and moderate evidence. CONCLUSION Surgical education is shifting towards competency-based education, and simulation-based training is increasingly used for acquiring skills and assessment. Most studies consider and describe how standard settings are established using more or less structured methods but for current and future educational programs, a critical approach is needed so that the learners receive a fair, valid and reliable assessment.
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8
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Thompson D, De Coppi P. Getting earlier, smaller and regenerative: The next 10 years of in utero spina bifida repair. Prenat Diagn 2021; 41:907-909. [PMID: 34216496 DOI: 10.1002/pd.6004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 06/24/2021] [Indexed: 11/08/2022]
Affiliation(s)
- Dominic Thompson
- Department of Neurosurgery, Great Ormond Street Hospital, London, UK
| | - Paolo De Coppi
- Specialist Neonatal and Paediatric Surgery Department, NIHR Biomedical Research Center, University College London and Great Ormond Street Hospital, London, UK.,Academic Department of Development and Regeneration, Clinical Specialties Research Groups, Leuven, Belgium
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