LIM/30 - Laboratório de Investigação em Cirurgia Pediátrica

URI Permanente desta comunidade

https://observatorio.fm.usp.br/handle/OPI/3714
O Laboratório de Investigação em Cirurgia Pediátrica é ligado ao Departamento de Pediatria da Faculdade de Medicina da Universidade de São Paulo (FMUSP).

Linhas de pesquisa: método histoquímico para pesquisa da atividade de acetilcolinesterase e biópsias intestinais; montagem do método de dosagem de procalcitonina na diferenciação entre infecção e rejeição; cirurgia fetal: modelo experimental de hérnia diafragmática congênita; treinamento e padronização técnica do transplante multivisceral; modelos de obstrução biliar em animais recém-nascidos.

Site oficial: http://limhc.fm.usp.br/portal/lim30-laboratorio-investigacao-em-cirurgia-pediatrica/

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article 0 Citação(ões) na Scopus
Clinical Aspects and Etiologic Investigation of Pediatric Patients With Acute Liver Failure
(2023) LUGLIO, Michele; MARQUES, Tatiana de Carvalho Silva; PEREIRA, Maria Fernanda Badue; DELGADO, Artur Figueiredo; CARVALHO, Werther Brunow de; TANNURI, Ana Cristina Aoun; SANDY, Natascha Silva; LITVINOV, Nadia; PAULA, Camila Sanson Yoshino de; SANTOS, Ariane Guissi dos; LAZARI, Carolina dos Santos; GOUVEA, Michele Soares Gomes; PAULA, Anderson Vicente de; MENDOZA, Tania Regina Tozetto; TANIGAWAH, Ryan Yukimatsu; LIMAH, Fabiana Roberto; HIRAYAMAH, Andre Bubna; SANTOS, Isabela Gusson Galdino dos; PINHOG, Joao Renato Rebello; SABINOG, Ester Cerdeira; MENDES-CORREAHG, Maria Cassia; ALVESH, Venancio Avancini Ferreira; MARQUESC, Heloisa Helena de Sousa
A new outbreak of hepatitis of unknown origin raised awareness in the international community. A few reports have attempted to associate new cases with adenovirus infection and the immunologic effects of previous SARS-CoV-2 infections through a superantigen mechanism. Moreover, according to a case series, viral isolates were identified in 7 of 10 cases of pediatric patients with hepatitis of unknown origin and acute liver failure. Adenovirus was detected by respiratory secretion polymerase chain reaction in 2 patients, with neither presenting with SARS-CoV-2 acute infection. Clinical and laboratory descriptions and cross-referencing epidemiologic and pathophysiological data can help identify possible disease etiologies.
article 0 Citação(ões) na Scopus
Three-dimensional Ultrasound Evaluation of Lung Volume in Fetuses with Abdominal Wall Defect
(2023) NISHIE, Estela Naomi; OSMUNDO-JUNIOR, Gilmar de Souza; MOHAMED, Samirah Hosney Mahmoud; TANNURI, Ana Cristina Aoun; GIBELLI, Maria Augusta Bento Cicaroni; CARVALHO, Werther Brunow de; PERES, Stela Verzinhasse; FRANCISCO, Rossana Pulcineli Vieira; BRIZOT, Maria de Lourdes
Introduction: Abdominal wall defects (AWD) interfere with postnatal respiratory parameters. We aimed to evaluate lung volume (LV) in fetuses with AWD using three-dimensional (3D) ultrasound (US) and to correlate AWD with the type (omphalocele and gastroschisis) and size of the defect and neonatal morbidity and mortality.Methods: This prospective study included 72 pregnant women with fetuses with AWD and a gestational age <25 weeks. Abdominal volume, 3D US LV, and herniated volume were acquired every 4 weeks up to 33 weeks. LV was compared with normal reference curves and correlated with abdominal and herniated volumes.Results: Omphalocele (p<0.001) and gastroschisis (p<0.001) fetuses had smaller LV than did normal fetuses. LV was positively correlated with abdominal volume (omphalocele, r=0.86; gastroschisis, r=0.88), whereas LV was negatively correlated with omphalocele-herniated volume/abdominal volume (p<0.001, r= -0.51). LV was smaller in omphalocele fetuses that died (p=0.002), were intubated (p=0.02), or had secondary closure (p<0.001). In gastroschisis, a smaller LV was observed in fetuses discharged using oxygen (p=0.002).Discussion/Conclusion: Fetuses with AWD had smaller 3D LV than normal fetuses. Fetal abdominal volume was inversely correlated with LV. In omphalocele fetuses, a smaller LV was associated with neonatal mortality and morbidity.
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Abdome agudo
(2023) TANNURI, Ana Cristina Aoun
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Atendimento inicial da criança politraumatizada
(2023) TANNURI, Ana Cristina Aoun; BRENER, Pedro Zanetta
article 0 Citação(ões) na Scopus
Post-natal prognostic factors in CDH: experience of 11 years in a referral center in Brazil
(2023) NAM, Camila Pinho Brasileiro Martins; CAMPOS, Carolina Vieira; LEAL, Gabriela Nunes; TANNURI, Uenis; CECCON, Maria Esther Jurfest Rivero; CARVALHO, Werther Brunow de
Objective: To describe post-natal risk factors associated with death in Newborns (NB) with Congenital Diaphragmatic Hernia (CDH) in a Brazilian reference center.Methods: In this retrospective cohort study, post-natal clinical factors of all NB diagnosed with CDH were reviewed in an 11-year period (2007-2018). The primary outcome was death. Secondary outcomes included clinical features, prognostic indexes, type of mechanical ventilation, complications during hospitalization and surgical repair.Results: After applying the exclusion criteria, the authors analyzed 137 charts. Overall mortality was 59% (81/ 137), and the highest rates were observed for low-birth-weight NB (87%), syndromic phenotype (92%), and those with major malformations (100%). Prognostic indexes such as Apgar, SNAPPE-II and 24hOI (best oxygenation index in 24 hours) were all associated with poor evolution. In a multivariate analysis, only birth weight and 24hOI were statistically significant risk factors for mortality, with a reduction in mortality risk of 17.1% (OR = 0.829, 95% IC 0.72-0.955, p = 0.009) for each additional 100g at birth and an increase by 26.5% (OR = 1.265, 95% IC 1.113-1.436, p = 0.0003) for each unitary increase at the 24hOI.Conclusion: Prognostic indexes are an important tool for predicting outcomes and improving resource allocation. Post-natal risk factors may be more suitable for settings where antenatal diagnosis is not universal. Classical risk factors, such as prematurity, low birth weight, higher need for supportive care, and poorer prognostic indexes were associated with mortality in our CDH population.
article 1 Citação(ões) na Scopus
Effects of local and remote ischemic postconditioning methods on ischemia-reperfusion injury in a young animal model of acute mesenteric ischemia
(2023) ABREU, Mateus Souza; TANNURI, Ana Cristina Aoun; RODRIGUES, Rafael Felipe Goncalves; SILVA, Rafael Jose da; GONCALVES, Josiane de Oliveira; SERAFINI, Suellen; TANNURI, Uenis
Purpose: Acute mesenteric ischemia (AMI) is a condition in pediatric surgery that ranges from intestine necrosis to death. Ischemic postconditioning (IPoC) methods were developed to reduce the damage caused by revascularization. This study aimed to evaluate the efficacy of these methods in an experimental weaning rat model. Methods: Thirty-two 21-day-old Wistar rats were allocated into four groups according to the surgical procedure performed: control, ischemia-reperfusion injury (IRI), local (LIPoC) and remote IPoC (RIPoC). At euthanasia, fragments of the intestine, liver, lungs, and kidneys were submitted to histological, histomorphometric, and molecular analyses. Results: In the duodenum, intestines, and kidneys histological alterations promoted by IRI were reversed by remote postconditioning method. In the distal ileum, the histomorphometric alterations could be reversed by the postconditioning methods with more evident effects promoted by the remote method. The molecular analysis found that the levels of expression of Bax (proapoptotic) and Bcl-XL (antiapoptotic) genes in the intestine were increased by IRI. These alterations were equally reversed by the postconditioning methods, with more evident effects of the remote method. Conclusion: IPoC methods positively reduced the damage caused by IRI in weaning rats.
article 0 Citação(ões) na Scopus
Effects of serum sodium and chloride levels in the outcome of critically ill pediatric patients in the post-operative period of liver transplantation
(2023) LUGLIO, Michele; CARVALHO, Werther B. de; TANNURI, Uenis; TANNURI, Ana Cristina A.; MATSURA, Rodrigo Hideki; FRANCA, Gardenia Morais; DELGADO, Artur F.
BackgroundSodium and chloride disturbances have attracted increasing attention in recent years. Many pathophysiological effects are associated with hyperchloremia, including reduction in mean arterial pressure and acute renal disease. Pediatric patients undergoing liver transplantation are at risk of developing various electrolyte and biochemical abnormalities, with an impact on their postoperative outcomes.ObjectiveTo analyze the impacts of serum sodium and chloride levels on prognosis of Pediatric Liver Transplant receptors.MethodsThis was a retrospective analytical observational study performed in a single transplant reference center in Sao Paulo, Brazil. Included patients were pediatric patients who underwent liver transplantation between January 2015 and July 2019. Statistical regression analysis and General Estimating Equations analysis were performed to evaluate the impacts of sodium and chloride disturbances on the development of acute renal failure and mortality.ResultsA total of 143 patients were included in this study. The main diagnosis was Biliary Atresia (62.9%). Twenty-seven patients died (18.9%), and graft dysfunction was the main cause of death (29.6%). The only variable individually associated with 28-days mortality was PIM-3 score (HR 1.59, CI 95% 1.165-2.177, p = 0.004). Forty-one patients (28.6%) developed moderate or severe AKI. PIM-3 score (OR 3.052, 95% CI 1.56-5.97, p = 0.001), hypernatremia (OR 3.49, 95% CI 1.32-9.23, p = 0.012), and hyponatremia (OR 4.24, 95% CI 1.52-11.85, p = 0.006) were independently associated with the development of moderate/severe AKI.ConclusionsIn pediatric patients after liver transplantation, PIM-3 score, and abnormal serum sodium levels were correlated with AKI development.
article 0 Citação(ões) na Scopus
A new systematization of histological analysis for the diagnosis of Hirschsprung's disease
(2023) SERAFINI, Suellen; SANTOS, Maria Merces; TANNURI, Ana Cristina Aoun; LORETO, Celso Di; GONCALVES, Josiane de Oliveira; TANNURI, Uenis
Background: Hirschsprung's Disease (HD) is characterized by intestinal sub-occlusion and the absence of enteric ganglion cells. A rectal biopsy examination is performed to confirm the diagnosis. In a recent study, we demon-strated that the analysis of 60 sections of rectal mucosa and submucosa stained by H&E may ensure a 90% diag-nostic accuracy. Although the need to analyze so many sections makes the process of reading the slides more time-consuming, this encouraged us to study their distribution in the healthy rectal submucosa, to simplify the diagnosis.Objectives: To develop a method that facilitates HD diagnosis by studying the distribution of ganglion cells in the submucosal plexus. Methods: Using the calretinin technique, we studied the distribution of plexuses in 60 fragments of rectal submu-cosa from 19 cadavers. After the study, the reading method created was used for diagnosis in 47 cases of suspected HD, using H&E staining. The accuracy was verified by comparing the results obtained with H&E to those obtained with the acetylcholinesterase technique, the golden standard in our laboratory.Results: The study of submucosal plexus distribution showed that just by examining the submucosal region every 20 mu m, approximately, it is possible to locate a ganglionic plexus, and we have already been able to diagnose HD with 93% accuracy. Conclusion: The study of ganglion cell distribution enabled the creation of a simplified method for reading the slides. The method applied achieved good accuracy and it can be used as an alternative method in HD diagnosis.
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Avaliação funcional do fígado e hepatites
(2023) TANNURI, Ana Cristina Aoun
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Distúrbios da coagulação ou coagulopatias na sala cirúrgica pediátrica
(2023) TANNURI, Ana Cristina Aoun; MATOS, Marinez Farana; PECORA, Fernanda Salomão Turazzi