ABSTRACT
Introducción. Las cardiopatías congénitas complejas son las malformaciones más frecuentes con una importante carga de morbimortalidad. Se busca conocer el estado de salud y discapacidad de niños operados en un hospital de tercer nivel. Población y métodos. Fueron evaluados en las áreas de crecimiento, neurodesarrollo y discapacidad 84 pacientes entre 21 y 39 meses de edad operados con circulación extracorpórea durante el primer año de vida. Resultados. La mayoría de los niños crece por debajo del percentil 50 en los tres parámetros, con mayor compromiso en aquellos con síndrome genético asociado. La frecuencia de discapacidad fue del 55 %. En el grupo con CC aislada, la gravedad de la cardiopatía y el examen neurológico patológico al alta se asociaron con discapacidad (p = 0,047 y p = 0,03). Contar solo con cobertura de salud pública se asocia a un menor acceso a intervenciones oportunas (p = 0,02). Conclusiones. Cerca de la mitad de los pacientes evoluciona con discapacidad moderada-grave. Es competencia del equipo de salud conocer las morbilidades más allá del aspecto cardiovascular y los factores de riesgo. Las barreras en el acceso a las intervenciones adecuadas advierten a los profesionales sobre la relevancia de buscar estrategias para vencerlas y lograr el máximo potencial de desarrollo de los pacientes.
Introduction. Complex congenital heart defects are the most frequent malformations and entail a significant burden of disease. The objective of this study was to determine the health status and disability of children who underwent surgery at a tertiary care hospital. Population and methods. A total of 84 patients aged 21 to 39 months who had a surgery with extracorporeal circulation during their first year of life were assessed in terms of growth, neurodevelopment, and disability. Results. In most children, growth was below the 50th percentile in all 3 parameters, and greater involvement was observed in those with an associated genetic disorder. The frequency of disability was 55%. In the group with isolated congenital heart disease, the severity of disease and a pathological neurological examination at discharge were associated with disability (p = 0.047 and p = 0.03). Having only public health coverage was associated with less access to timely interventions (p = 0.02). Conclusions. Nearly half of the patients develop moderate-severe disability. Being aware of morbidities beyond the cardiovascular aspect and risk factors is part of the health care team's scope. Barriers in access to appropriate interventions caution health care providers of the relevance of seeking strategies to overcome them and achieve the maximum development potential of patients.
Subject(s)
Humans , Infant , Child, Preschool , Heart Defects, Congenital/diagnosis , Child Development , Health Status , Cross-Sectional Studies , Prospective StudiesABSTRACT
Introduction. Complex congenital heart defects are the most frequent malformations and entail a significant burden of disease. The objective of this study was to determine the health status and disability of children who underwent surgery at a tertiary care hospital. Population and methods. A total of 84 patients aged 21 to 39 months who had a surgery with extracorporeal circulation during their first year of life were assessed in terms of growth, neurodevelopment, and disability. Results. In most children, growth was below the 50 th percentile in all 3 parameters, and greater involvement was observed in those with an associated genetic disorder. The frequency of disability was 55%. In the group with isolated congenital heart disease, the severity of disease and a pathological neurological examination at discharge were associated with disability (p = 0.047 and p = 0.03). Having only public health coverage was associated with less access to timely interventions (p = 0.02). Conclusions. Nearly half of the patients develop moderate-severe disability. Being aware of morbidities beyond the cardiovascular aspect and risk factors is part of the health care team's scope. Barriers in access to appropriate interventions caution health care providers of the relevance of seeking strategies to overcome them and achieve the maximum development potential of patients.
Introducción. Las cardiopatías congénitas complejas son las malformaciones más frecuentes con una importante carga de morbimortalidad. Se busca conocer el estado de salud y discapacidad de niños operados en un hospital de tercer nivel. Población y métodos. Fueron evaluados en las áreas de crecimiento, neurodesarrollo y discapacidad 84 pacientes entre 21 y 39 meses de edad operados con circulación extracorpórea durante el primer año de vida. Resultados. La mayoría de los niños crece por debajo del percentil 50 en los tres parámetros, con mayor compromiso en aquellos con síndrome genético asociado. La frecuencia de discapacidad fue del 55 %. En el grupo con CC aislada, la gravedad de la cardiopatía y el examen neurológico patológico al alta se asociaron con discapacidad (p = 0,047 y p = 0,03). Contar solo con cobertura de salud pública se asocia a un menor acceso a intervenciones oportunas (p = 0,02). Conclusiones. Cerca de la mitad de los pacientes evoluciona con discapacidad moderada-grave. Es competencia del equipo de salud conocer las morbilidades más allá del aspecto cardiovascular y los factores de riesgo. Las barreras en el acceso a las intervenciones adecuadas advierten a los profesionales sobre la relevancia de buscar estrategias para vencerlas y lograr el máximo potencial de desarrollo de los pacientes.
Subject(s)
Heart Defects, Congenital , Humans , Child , Infant , Heart Defects, Congenital/diagnosis , Child Development , Health StatusABSTRACT
The Network Noisy Leaky Integrate and Fire equation is among the simplest model allowing for a self-consistent description of neural networks and gives a rule to determine the probability to find a neuron at the potential v. However, its mathematical structure is still poorly understood and, concerning its solutions, very few results are available. In the midst of them, a recent result shows blow-up in finite time for fully excitatory networks. The intuitive explanation is that each firing neuron induces a discharge of the others; thus increases the activity and consequently the discharge rate of the full network. In order to better understand the details of the phenomena and show that the equation is more complex and fruitful than expected, we analyze further the model. We extend the finite time blow-up result to the case when neurons, after firing, enter a refractory state for a given period of time. We also show that spontaneous activity may occur when, additionally, randomness is included on the firing potential VF in regimes where blow-up occurs for a fixed value of VF.
Subject(s)
Action Potentials/physiology , Models, Neurological , Nerve Net/physiology , Refractory Period, Electrophysiological , Numerical Analysis, Computer-AssistedABSTRACT
Nonlinear Noisy Leaky Integrate and Fire (NNLIF) models for neurons networks can be written as Fokker-Planck-Kolmogorov equations on the probability density of neurons, the main parameters in the model being the connectivity of the network and the noise. We analyse several aspects of the NNLIF model: the number of steady states, a priori estimates, blow-up issues and convergence toward equilibrium in the linear case. In particular, for excitatory networks, blow-up always occurs for initial data concentrated close to the firing potential. These results show how critical is the balance between noise and excitatory/inhibitory interactions to the connectivity parameter.AMS Subject Classification: 35K60, 82C31, 92B20.
