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1.
Pediatr Res ; 2024 Jan 15.
Artigo em Inglês | MEDLINE | ID: mdl-38225451

RESUMO

BACKGROUND: The corpus callosum (CC) is suggested as an indirect biomarker of white matter volume, which is often affected in preterm birth. However, diagnosing mild white matter injury is challenging. METHODS: We studied 124 children born preterm (mean age: 8.4 ± 1.1 years), using MRI to assess CC measurements and cognitive/motor outcomes based on the Wechsler Intelligence Scale for Children-V (WPPSI-V) and Movement Assessment Battery for Children-2 (MABC-2). RESULTS: Children with normal outcomes exhibited greater height (10.2 ± 2.1 mm vs. 9.4 ± 2.3 mm; p = 0.01) and fractional anisotropy at splenium (895[680-1000] vs 860.5[342-1000]) and total CC length (69.1 ± 4.8 mm vs. 67.3 ± 5.1 mm; p = 0.02) compared to those with adverse outcomes. All measured CC areas were smaller in the adverse outcome group. Models incorporating posterior CC measurements demonstrated the highest specificity (83.3% Sp, AUC: 0.65) for predicting neurological outcomes. CC length and splenium height were the only linear measurements associated with manual dexterity and total MABC-2 score while both the latter and genu were related with Full-Scale Intelligence Quotient. CONCLUSIONS: CC biometry in children born very preterm at school-age is associated with outcomes and exhibits a specific subregion alteration pattern. The posterior CC may serve as an important neurodevelopmental biomarker in very preterm infants. IMPACT: The corpus callosum has the potential to serve as a reliable and easily measurable biomarker of white matter integrity in very preterm children. Estimating diffuse white matter injury in preterm infants using conventional MRI sequences is not always conclusive. The biometry of the posterior part of the corpus callosum is associated with cognitive and certain motor outcomes at school age in children born very preterm. Length and splenium measurements seem to serve as reliable biomarkers for assessing neurological outcomes in this population.

2.
IEEE J Biomed Health Inform ; 27(6): 2614-2624, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-37819832

RESUMO

In this work we introduce NeoCam, an open source hardware-software platform for video-based monitoring of preterms infants in Neonatal Intensive Care Units (NICUs). NeoCam includes an edge computing device that performs video acquisition and processing in real-time. Compared to other proposed solutions, it has the advantage of handling data more efficiently by performing most of the processing on the device, including proper anonymisation for better compliance with privacy regulations. In addition, it allows to perform various video analysis tasks of clinical interest in parallel at speeds of between 20 and 30 frames-per-second. We introduce algorithms to measure without contact the breathing rate, motor activity, body pose and emotional status of the infants. For breathing rate, our system shows good agreement with existing methods provided there is sufficient light and proper imaging conditions. Models for motor activity and stress detection are new to the best of our knowledge. NeoCam has been tested on preterms in the NICU of the University Hospital Puerta del Mar (Cádiz, Spain), and we report the lessons learned from this trial.


Assuntos
Computação em Nuvem , Unidades de Terapia Intensiva Neonatal , Recém-Nascido , Lactente , Humanos , Recém-Nascido Prematuro , Software , Algoritmos
3.
Eur J Pediatr ; 182(11): 5119-5129, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37682341

RESUMO

The purpose of this study is to define the impact of early brain growth trajectory in very low birth weight infants (VLBWI) on neurological prognosis at 2 years, assessed using sequential ultrasound (US) scans. This is a prospective cohort study with consecutive inclusion of VLBWI ≤ 32 weeks gestational age and ≤ 1500 g at birth. Total brain volume (TBV) was assessed using sequential 3D-US from birth to discharge. Prognosis at 2 years (corrected age) was assessed using the Bayley Scales of Infant and Toddler Development Third Edition. TBV showed slower growth with postmenstrual age (PMA) in those VLBWI who had an adverse cognitive prognosis compared to those with good cognitive prognosis (mean difference in TBV between prognostic groups from 4.56 cm3 at 28 weeks to 42.58 cm3 at 43 weeks) as well as in those with adverse language prognosis (mean difference in TBV from 2.21 cm3 at 28 weeks to 26.98 cm3 at 43 weeks) although other variables showed more impact than TBV on language prognosis (gestational age at birth, brain injury at term, and socioeconomic status). No association was found between TBV and motor prognosis. Brain growth rate was also significantly higher in those VLBWI who presented good cognitive scores (18.78 + (0.33 × (PMA-33)) cm3/week) compared to those with adverse cognitive outcome (13.73 + (0.64 × (PMA-33)) cm3/week).  Conclusion: Early altered brain growth is associated with poor cognitive prognosis at 2 years of age. Using sequential US monitoring, we can detect early brain growth deviation in patients who will have adverse cognitive outcomes. What is known: • The prediction of neurodevelopmental outcome of VLBWI is mostly based on the presence of brain injury in US and structural magnetic resonance imaging (MRI) at term. • Some studies have related brain volume measured on MRI at term with neurodevelopment outcome. What is new: • VLBWI with adverse cognitive prognosis at two years of age present smaller brain volumes detectable by sequential US during NICU admission. • Brain volume can be estimated from 2D and 3D US and has prognostic value in VLBWI.


Assuntos
Lesões Encefálicas , Recém-Nascido Prematuro , Recém-Nascido , Lactente , Humanos , Estudos Prospectivos , Encéfalo/diagnóstico por imagem , Recém-Nascido de muito Baixo Peso , Idade Gestacional
4.
Pediatr Res ; 94(1): 296-303, 2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-36624287

RESUMO

BACKGROUND: Preterm infants develop smaller brain volumes compared to term newborns. Our aim is to study early brain growth related to perinatal factors in very low birth weight infants (VLBWI). METHODS: Manual segmentation of total brain volume (TBV) was performed in weekly 3D-ultrasonographies in our cohort of VLBWI. We studied the brain growth pattern related to term magnetic resonance image (term-MRI). RESULTS: We found different brain growth trajectories, with smaller brain volumes and a decrease in brain growth rate in those VLBWI who would later have an abnormal term-MRI (mean TBV 190.68 vs. 213.9 cm3; P = 0.0001 and mean TBV growth rate 14.35 (±1.27) vs. 16.94 (±2.29) cm3/week; P = 0.0001). TBV in those with normal term-MRI was related to gestational age (GA), being small for gestational age (SGA), sex, and duration of parenteral nutrition (TPN) while in those with abnormal term-MRI findings it was related to GA, SGA, TPN, and comorbidities. We found a deceleration in brain growth rate in those with ≥3 comorbidities. CONCLUSIONS: An altered brain growth pattern in VLBWI who subsequently present worst scores on term-MRI is related to GA, being SGA and comorbidities. Early ultrasonographic monitoring of TBV could be useful to detect deviated patterns of brain growth. IMPACT STATEMENT: We describe the brain growth pattern in very low birth weight infants during their first postnatal weeks. Brain growth may be affected in the presence of certain perinatal factors and comorbidities, conditioning a deviation of the normal growth pattern. The serial ultrasound follow-up of these at-risk patients allows identifying these brain growth patterns early, which offers a window of opportunity for implementing earlier interventions.


Assuntos
Recém-Nascido Prematuro , Recém-Nascido de muito Baixo Peso , Lactente , Gravidez , Feminino , Humanos , Recém-Nascido , Encéfalo/diagnóstico por imagem , Idade Gestacional , Cabeça , Recém-Nascido Pequeno para a Idade Gestacional , Retardo do Crescimento Fetal/diagnóstico por imagem , Peso ao Nascer
5.
Eur J Pediatr ; 181(8): 3013-3021, 2022 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-35648231

RESUMO

The N-terminal end of B-type natriuretic peptide (NT-proBNP) and lung ultrasound (LUS) score have been proven to be adequate early biomarkers of bronchopulmonary dysplasia (BPD) in preterm infants. Our aim was to study if the predictive capacity of each one is increased by analyzing them together. We included infants born before 32 weeks with NT-proBNP and LUS scores on the first day of life (DOL) and on the 3rd, 7th, and 14th DOL and compared the diagnostic ability for moderate-severe BPD (msBPD) of each biomarker and in combination. We also compared them with a multivariate model of msBPD using only clinical variables. The sample size was 133 patients, and twenty-seven (20%) developed msBPD. The LUS score on the 7th DOL had better performance than NT-proBNP at the same moment: area under the receiver operating characteristic curve (AUC) 0.83 (0.75-0.89) versus 0.66 (0.56-0.75), p = 0.003, without differences in the rest of the times studied. These values did not increase when using the combination of both. A multivariate regression model that included only clinical variables (birth weight and invasive mechanical ventilation (IMV) at the 7th DOL) predicted msBPD with the same AUC as after the addition of any of these biomarkers, neither together. CONCLUSION: The LUS score is a better predictor of msBPD on the 7th DOL than NT-proBNP in preterm infants born before 32 weeks, although they have similar diagnostic accuracy on the 1st, 3rd, and 14th DOL. Neither of them, nor together, have a better AUC for msBPD than a clinical model with birthweight and the need for IMV at the 7th DOL. WHAT IS KNOWN: • NT-proBNP and LUS score are early predictors of moderate-severe bronchopulmonary dysplasia (msBPD). WHAT IS NEW: • The combination of both NT-proBNP and LUS score does not increase the predictive ability of each separately.


Assuntos
Displasia Broncopulmonar , Peptídeo Natriurético Encefálico , Biomarcadores , Displasia Broncopulmonar/diagnóstico por imagem , Humanos , Lactente , Recém-Nascido , Recém-Nascido Prematuro , Pulmão/diagnóstico por imagem , Fragmentos de Peptídeos
6.
Sci Rep ; 11(1): 567, 2021 01 12.
Artigo em Inglês | MEDLINE | ID: mdl-33436974

RESUMO

To train, evaluate, and validate the application of a deep learning framework in three-dimensional ultrasound (3D US) for the automatic segmentation of ventricular volume in preterm infants with post haemorrhagic ventricular dilatation (PHVD). We trained a 2D convolutional neural network (CNN) for automatic segmentation ventricular volume from 3D US of preterm infants with PHVD. The method was validated with the Dice similarity coefficient (DSC) and the intra-class coefficient (ICC) compared to manual segmentation. The mean birth weight of the included patients was 1233.1 g (SD 309.4) and mean gestational age was 28.1 weeks (SD 1.6). A total of 152 serial 3D US from 10 preterm infants with PHVD were analysed. 230 ventricles were manually segmented. Of these, 108 were used for training a 2D CNN and 122 for validating the methodology for automatic segmentation. The global agreement for manual versus automated measures in the validation data (n = 122) was excellent with an ICC of 0.944 (0.874-0.971). The Dice similarity coefficient was 0.8 (± 0.01). 3D US based ventricular volume estimation through an automatic segmentation software developed through deep learning improves the accuracy and reduces the processing time needed for manual segmentation using VOCAL. 3D US should be considered a promising tool to help deepen our current understanding of the complex evolution of PHVD.


Assuntos
Aprendizado Profundo , Ventrículos do Coração/diagnóstico por imagem , Ventrículos do Coração/patologia , Processamento de Imagem Assistida por Computador/métodos , Imageamento Tridimensional/métodos , Recém-Nascido Prematuro , Ultrassonografia/métodos , Mama/anormalidades , Dilatação Patológica/diagnóstico por imagem , Humanos , Hipertrofia , Recém-Nascido , Redes Neurais de Computação , Tamanho do Órgão , Sensibilidade e Especificidade , Design de Software
7.
Pediatr Cardiol ; 40(6): 1165-1170, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31175403

RESUMO

The objective is to examine the correlation between plasma levels of N-terminal pro-brain natriuretic peptide (NT-proBNP) and tissue Doppler imaging (TDI) echocardiographic parameters in the first 28 days of life in very-low-birth-weight infants (VLBWI). VLBWI admitted to the Neonatal Intensive Care Unit (NICU) at Hospital Puerta del Mar, Spain, from January 2015 to January 2017 were prospectively enrolled. Weekly determination of plasma NT-proBNP (pg/mL), and echocardiograms were done during the first 28 days of life. 101 preterm infants with a mean GA of 28.85 weeks (± 1.85 SD) and mean birth weight of 1152 g (± 247.4 SD) were included. A total of 483 echocardiograms and 139 NT-proBNP determinations were performed. We found a negative correlation between plasma NT-proBNP levels and diastolic velocities: mitral A' (ρ = - 0.15, p = 0.04), mitral E' (ρ = - 0.17, p = 0.02), tricuspid A' (ρ = - 0.20, p = 0.006), tricuspid E' (ρ = - 0.24, p = 0.0009). In the first 24 h of life, NT-proBNP levels were strongly correlated with mitral A' and E' velocities in patients with no patent ductus arteriosus (PDA) (ρ = - 0.75, p = 0.04). In preterm patients, elevated NT-proBNP levels are related to worse diastolic myocardial function. In the first 24 h, this correlation is much stronger in the absence of PDA.


Assuntos
Doenças do Prematuro/diagnóstico , Peptídeo Natriurético Encefálico/sangue , Fragmentos de Peptídeos/sangue , Disfunção Ventricular/diagnóstico , Biomarcadores/sangue , Ecocardiografia Doppler , Feminino , Humanos , Lactente , Recém-Nascido Prematuro , Doenças do Prematuro/sangue , Doenças do Prematuro/genética , Recém-Nascido de muito Baixo Peso , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Espanha , Disfunção Ventricular/sangue
9.
An. pediatr. (2003. Ed. impr.) ; 89(5): 286-293, nov. 2018. tab, graf
Artigo em Espanhol | IBECS | ID: ibc-177118

RESUMO

INTRODUCCIÓN: La Sociedad Española de Cardiología Pediátrica y Cardiopatías Congénitas recomienda realizar ecocardiografía transtorácica (ETT) en todo menor de 2 años con soplo. En 2014 la Asociación Americana de Pediatría publicó los primeros criterios de uso apropiado de ETT pediátrica ambulatoria (CUA) como guía para promover un uso costo-eficiente de la misma. Nuestro objetivo fue analizar los CUA y otros factores clínicos como predictores de cardiopatía congénita (CC) en menores de 2 años con soplo para desarrollar una estrategia de derivación eficiente y segura. Pacientes y método: Estudio de casos y controles en menores de 2 años derivados por pediatría de atención primaria a cardiología pediátrica por soplo durante 4 años. Mediante análisis multivariante se determinó un modelo predictivo de CC. RESULTADOS: Se incluyeron 688 pacientes con 129 casos (19%) de CC. La edad menor a 3 meses (odds ratio ajustada (ORa) 3,8(1,5-8,4); p = 0,030) y cumplimiento de CUA (ORa 16,3(9,4-28,39; p < 0,001) fueron predictores de CC. La presencia de infección concurrente (ORa 0,6 (0,2-0,8); p < 0,001), y un screening neonatal con pulsioximetría negativo (ORa 0,1 (0,05-0,4); p = 0,001) disminuyeron el riesgo de CC. La estrategia de derivación que incluía estos criterios presentó una sensibilidad 98%, especificidad 39%, VPP 27% y VPN 99%. Dejaría de diagnosticar un 2% de CC (todas leves) y reduciría un 32% el número de ETT realizadas respecto a la estrategia actual. CONCLUSIÓN: La derivación por pediatría de atención primaria para ETT de niños que sean menores de 3 meses, cumplan CUA, no presenten infección concurrente, o no tengan SP, constituye una estrategia eficiente y segura para el manejo de soplo en menores de 2 años


INTRODUCTION: Current guidelines in Spain recommend performing transthoracic echocardiography (TTE) in all children under 2 years of age with a heart murmur. In 2014, the American Paediatric Association published the first appropriate use criteria (AUC) for outpatient paediatric transthoracic echocardiography (TTE) to promote its cost-efficient use. The aim of this article is to analyse the AUC and other clinical factors as predictors of congenital heart disease (CHD) in children less than 2 years of age with a heart murmur, and to develop a safe and efficient referral strategy. PATIENTS AND METHOD: Case-control study conducted with children less than 2 years of age, referred from Paediatric Primary Care to Paediatric Cardiology during a 4-year study. A predictive model for CHD was determined using multivariate analysis. RESULTS: A total of 688 patients were included, with 129 (19%) cases of CHD. An age less than 3 months (adjusted odds ratio [ORa] 3.8 [1.5-8.4], p=.030) and fulfilling AUC (ORa 16.3 [9.4-28.3], p<.001) were predictors of CHD. Concurrent infection (ORa 0.6 [0.2-0.8], p<.001) and a negative neonatal screening with pulse oximetry (ORa 0.1 [0.05-0.4], p=.001) decreased the risk of CHD. The referral strategy that included these criteria had a 98% sensitivity, 39% specificity, and positive and negative predictive values of 27% and 99%, respectively. It could not diagnose 2% of CHD (all mild), and showed a 32% TTE reduction rate compared to our current strategy. CONCLUSION: To refer children less than 3 months old, fulfilling AUC, without a concurrent infection, or without negative neonatal pulse oximetry screening, is a safe and efficient strategy for the management of heart murmur in children under 2 years of age


Assuntos
Humanos , Masculino , Feminino , Lactente , Pré-Escolar , Sopros Cardíacos/diagnóstico , Sopros Cardíacos/terapia , Estudos de Casos e Controles , Atenção Primária à Saúde , Cardiopatias/congênito , Cardiopatias/diagnóstico , Análise Multivariada , Valor Preditivo dos Testes , Razão de Chances
10.
An Pediatr (Engl Ed) ; 89(5): 286-293, 2018 Nov.
Artigo em Espanhol | MEDLINE | ID: mdl-29803643

RESUMO

INTRODUCTION: Current guidelines in Spain recommend performing transthoracic echocardiography (TTE) in all children under 2 years of age with a heart murmur. In 2014, the American Paediatric Association published the first appropriate use criteria (AUC) for outpatient paediatric transthoracic echocardiography (TTE) to promote its cost-efficient use. The aim of this article is to analyse the AUC and other clinical factors as predictors of congenital heart disease (CHD) in children less than 2 years of age with a heart murmur, and to develop a safe and efficient referral strategy. PATIENTS AND METHOD: Case-control study conducted with children less than 2 years of age, referred from Paediatric Primary Care to Paediatric Cardiology during a 4-year study. A predictive model for CHD was determined using multivariate analysis. RESULTS: A total of 688 patients were included, with 129 (19%) cases of CHD. An age less than 3 months (adjusted odds ratio [ORa] 3.8 [1.5-8.4], p=.030) and fulfilling AUC (ORa 16.3 [9.4-28.3], p<.001) were predictors of CHD. Concurrent infection (ORa 0.6 [0.2-0.8], p<.001) and a negative neonatal screening with pulse oximetry (ORa 0.1 [0.05-0.4], p=.001) decreased the risk of CHD. The referral strategy that included these criteria had a 98% sensitivity, 39% specificity, and positive and negative predictive values of 27% and 99%, respectively. It could not diagnose 2% of CHD (all mild), and showed a 32% TTE reduction rate compared to our current strategy. CONCLUSION: To refer children less than 3 months old, fulfilling AUC, without a concurrent infection, or without negative neonatal pulse oximetry screening, is a safe and efficient strategy for the management of heart murmur in children under 2 years of age.


Assuntos
Cardiopatias Congênitas/diagnóstico , Sopros Cardíacos/diagnóstico , Encaminhamento e Consulta/normas , Estudos de Casos e Controles , Feminino , Cardiopatias Congênitas/complicações , Sopros Cardíacos/etiologia , Humanos , Lactente , Recém-Nascido , Masculino , Estudos Retrospectivos
11.
Radiology ; 288(1): 254-261, 2018 07.
Artigo em Inglês | MEDLINE | ID: mdl-29613844

RESUMO

Purpose To establish cross-sectional and longitudinal reference values for cerebellar size in preterm infants with normal neuroimaging findings and normal 2-year neurodevelopmental outcome by using cranial ultrasonography (US). Materials and Methods This prospective study consecutively enrolled preterm infants admitted to a neonatal intensive care unit from June 2011 to June 2014 with a birth weight of less than or equal to 1500 g and/or gestational age (GA) of less than or equal to 32 weeks. They underwent weekly cranial US from birth to term-equivalent age and magnetic resonance (MR) imaging at term-equivalent age. The infants underwent neurodevelopmental assessments at age 2 years with Bayley Scales of Infant and Toddler Development, 3rd edition (BSID-III). Patients with adverse outcomes (death or abnormal neuroimaging findings and/or BSID-III score of <85) were excluded. The following measurements were performed: vermis height, craniocaudal diameter, superior width, inferior width, vermis area, and transcerebellar diameter. Statistical analyses were conducted by using multilevel analyses. Results A total of 137 infants with a mean GA at birth of 29.4 weeks (range, 25-32 weeks) were included. Transcerebellar diameter increased by 1.04 mm per week on average; vermis height and craniocaudal diameter increased by 0.55 mm and 0.59 mm, respectively. Superior vermian width increased by an average of 0.45 mm, whereas inferior vermian width increased by an average of 0.51 mm per week. Vermis area was found to increase by 0.22 cm2 per week on average. The sex effect was significant (female lower than male) for vermis height (P < .05), craniocaudal diameter (P < .05), inferior vermian width (P <. 05), and vermis area (P <. 05). Conclusion Cross-sectional and longitudinal reference values were established for cerebellar growth in preterm infants, which may be included in routine cranial US.


Assuntos
Cerebelo/anatomia & histologia , Cerebelo/diagnóstico por imagem , Imageamento Tridimensional/métodos , Recém-Nascido Prematuro , Ultrassonografia/métodos , Pré-Escolar , Estudos Transversais , Feminino , Idade Gestacional , Humanos , Lactente , Recém-Nascido , Masculino , Estudos Prospectivos , Espanha
12.
J Clin Neurophysiol ; 34(5): 456-460, 2017 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-28873072

RESUMO

PURPOSE: Preterm small-for-gestational-age (SGA) infants are at risk for a high mortality rate and impaired cognitive development. Only a few studies have focused on amplitude-integrated EEG (aEEG) in preterm SGA infants. They have been shown to have a slower rate of brain maturation, but these findings have not consistently been related to neurodevelopmental outcomes. The aim of our study was to evaluate early aEEG monitoring in SGA compared with adequate-for-gestational-age preterms. METHODS: This prospective cohort study enrolled infants with very low birth weight who were admitted to the neonatal intensive care unit at Hospital Puerta del Mar, Cádiz, Spain, from June 2009 to September 2012. This study was a subanalysis of SGA from the global cohort previously described by our group. Adverse outcome included severe intraventricular hemorrhage and/or death. Cerebral function was monitored using aEEG recordings during the first 72 hours of life. RESULTS: Preterm SGA infants (18 SGA in the global cohort of 92 patients) had lower 1- and 5-minute Apgar scores, higher score for neonatal acute physiology perinatal extension II scores, and higher proportion of adverse outcomes. When comparing preterm adequate-for-gestational-age infants with SGA infants with good prognosis, those with SGA had more mature and continuous aEEG patterns. Low margin amplitude depression was not as severe in these patients, and a higher proportion of these patients developed sleep-wake cycles. CONCLUSIONS: The results of our study suggest that SGA infants with a good prognosis have a more mature aEEG pattern than preterm adequate-for-gestational-age patients with the same outcome. These findings support the brain sparing theory in SGA infants.


Assuntos
Encéfalo/fisiopatologia , Eletroencefalografia/métodos , Recém-Nascido Prematuro/fisiologia , Recém-Nascido Pequeno para a Idade Gestacional/fisiologia , Recém-Nascido de muito Baixo Peso/fisiologia , Feminino , Humanos , Recém-Nascido , Unidades de Terapia Intensiva Neonatal , Masculino , Prognóstico , Estudos Prospectivos
13.
Acta Paediatr ; 106(2): 211-217, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-27783429

RESUMO

AIM: Posthaemorrhagic ventricular dilatation (PHVD) is monitored by conventional two-dimensional ultrasound (2DUS). The aims of this study were to determine the volume of the lateral ventricles using three-dimensional ultrasound (3DUS) in preterm infants with PHVD and to evaluate the relationship between volume and linear measurements. METHODS: Serial 2DUSs and 3DUSs were performed on preterm infants with PHVD admitted to the neonatal intensive care unit at Puerta del Mar Hospital, Cádiz, Spain, from January 2013 to December 2014. The ventricular index, anterior horn width and thalamo-occipital distance were used as ventricular lineal measurements. Ventricular volume was calculated offline. RESULTS: Serial ultrasounds from seven preterm infants were measured. Each linear measurement was significantly associated with volume, and an equation was obtained through a significant multilevel mixed-effects lineal regression model: ventricular volume (cm3 ) = -11.02 + 0.668*VI + 0.817*AHW + 0.256*TOD. Intra-observer and interobserver agreement was excellent with an intraclass correlation coefficient of 0.99. CONCLUSION: Lateral ventricular volumes of preterm infants with PHVD could be reliably determined using 3DUS. Ventricular volume could be accurately estimated using three lineal measurements. More studies are needed to address the importance of volume determination in PHVD.


Assuntos
Ventrículos Cerebrais/diagnóstico por imagem , Hemorragias Intracranianas/diagnóstico por imagem , Ultrassonografia/métodos , Ventrículos Cerebrais/patologia , Humanos , Imageamento Tridimensional , Recém-Nascido , Recém-Nascido Prematuro , Recém-Nascido de muito Baixo Peso , Hemorragias Intracranianas/patologia , Modelos Lineares , Tamanho do Órgão
14.
J Pediatr Hematol Oncol ; 38(3): 173-5, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-26694193

RESUMO

Methemoglobinemia, including the inherited or congenital form, is a known but infrequent cause of neonatal cyanosis. We present the case of a newborn patient with neonatal cyanosis, who was diagnosed with F-M-Osaka methemoglobinemia, and an up-to-date literature review of the disease.


Assuntos
Cianose/etiologia , Metemoglobinemia/congênito , Feminino , Hemoglobina M , Humanos , Recém-Nascido , Metemoglobinemia/complicações
15.
J Pediatr Endocrinol Metab ; 26(7-8): 709-14, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23612535

RESUMO

Hepatocyte growth factor (HGF) is a potent mitogen and morphogen expressed in fetal organs. It requires activation by specific serine proteases. The role of activated HGF during fetal development has not been evaluated. We hypothesized that the serum levels of activated HGF would be increased in preterm neonates. Cord blood total HGF and activated HGF levels were measured in 19 preterm (gestational age, 28.04±2.39 weeks) and 24 term (gestational age, 39.37±0.95 weeks) newborns. Anthropometric parameters and metabolic indices were evaluated. Activated HGF was higher in preterm than in term neonates (0.81±0.05 vs. 0.61±0.06 ng/mL, p<0.05), whereas total HGF levels did not differ significantly between groups. In addition, total and activated HGF further increased by ∼40% in preterm neonates 12 h after birth. Finally, activated HGF correlated inversely with gestational age (r=-0.369; p=0.015) and birth weight (r=-0.440; p=0.003). Our study demonstrates that regulation of HGF activity and circulating HGF levels differ between term and preterm neonates along fetal development.


Assuntos
Sangue Fetal/química , Desenvolvimento Fetal , Fator de Crescimento de Hepatócito/sangue , Peso ao Nascer , Feminino , Idade Gestacional , Humanos , Recém-Nascido , Recém-Nascido Prematuro , Masculino
16.
Arch Argent Pediatr ; 110(4): e77-9, 2012 Aug.
Artigo em Espanhol | MEDLINE | ID: mdl-22859337

RESUMO

Late-onset sepsis is very frequent among preterm infants and cases due to Gram negative pathogens have elevated morbidity and mortality. Pantoea agglomerans is a Gram negative organism which has been rarely reported causing disease in humans. We present a case of P. agglomerans late-onset fulminant sepsis in a preterm newborn at a neonatal intensive care unit. Up to date none P. agglomerans sepsis has been reported among this population in our country.


Assuntos
Doenças em Gêmeos/microbiologia , Infecções por Enterobacteriaceae/microbiologia , Pantoea/patogenicidade , Sepse/microbiologia , Evolução Fatal , Feminino , Humanos , Recém-Nascido , Unidades de Terapia Intensiva Neonatal
17.
Arch. argent. pediatr ; 110(4): e77-e79, ago. 2012. ilus
Artigo em Espanhol | LILACS | ID: lil-657469

RESUMO

La sepsis tardía es especialmente frecuente en los recién nacidos pretérmino, y los bacilos gramnegativos son responsables de los casos más graves con una elevada mortalidad asociada. Pantoea agglomerans es un bacilo gramnegativo que pocas veces se ha descrito como patógeno en el ser humano, menos aún en el recién nacido. Se presenta el caso clínico de un recién nacido pretérmino que sufrió una sepsis fulminante por Pantoea agglomerans en una unidad de cuidados intensivos neonatales. Hasta la fecha no se ha descrito ningún caso de sepsis por P. agglomerans en esta población en España.


Late-onset sepsis is very frequent among preterm infants and cases due to Gram negative pathogens have elevated morbidity and mortality. Pantoea agglomerans is a Gram negative organism which has been rarely reported causing disease in humans. We present a case of P. agglomerans late-onset fulminant sepsis in a preterm newborn at a neonatal intensive care unit. Up to date none P. agglomerans sepsis has been reported among this population in our country.


Assuntos
Feminino , Humanos , Recém-Nascido , Doenças em Gêmeos/microbiologia , Infecções por Enterobacteriaceae/microbiologia , Pantoea/patogenicidade , Sepse/microbiologia , Evolução Fatal , Unidades de Terapia Intensiva Neonatal
18.
Arch. argent. pediatr ; 110(4): e77-e79, ago. 2012. ilus
Artigo em Espanhol | BINACIS | ID: bin-129366

RESUMO

La sepsis tardía es especialmente frecuente en los recién nacidos pretérmino, y los bacilos gramnegativos son responsables de los casos más graves con una elevada mortalidad asociada. Pantoea agglomerans es un bacilo gramnegativo que pocas veces se ha descrito como patógeno en el ser humano, menos aún en el recién nacido. Se presenta el caso clínico de un recién nacido pretérmino que sufrió una sepsis fulminante por Pantoea agglomerans en una unidad de cuidados intensivos neonatales. Hasta la fecha no se ha descrito ningún caso de sepsis por P. agglomerans en esta población en España.(AU)


Late-onset sepsis is very frequent among preterm infants and cases due to Gram negative pathogens have elevated morbidity and mortality. Pantoea agglomerans is a Gram negative organism which has been rarely reported causing disease in humans. We present a case of P. agglomerans late-onset fulminant sepsis in a preterm newborn at a neonatal intensive care unit. Up to date none P. agglomerans sepsis has been reported among this population in our country.(AU)


Assuntos
Feminino , Humanos , Recém-Nascido , Doenças em Gêmeos/microbiologia , Infecções por Enterobacteriaceae/microbiologia , Pantoea/patogenicidade , Sepse/microbiologia , Evolução Fatal , Unidades de Terapia Intensiva Neonatal
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