Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 12 de 12
Filtrar
Más filtros

Métodos Terapéuticos y Terapias MTCI
Bases de datos
País/Región como asunto
Tipo del documento
País de afiliación
Intervalo de año de publicación
1.
Lancet Respir Med ; 12(7): 544-555, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38643780

RESUMEN

BACKGROUND: Vitamin A plays a key role in lung development, but there is no consensus regarding the optimal vitamin A dose and administration route in extremely low birthweight (ELBW) infants. We aimed to assess whether early postnatal additional high-dose fat-soluble enteral vitamin A supplementation versus placebo would lower the rate of moderate or severe bronchopulmonary dysplasia or death in ELBW infants receiving recommended basic enteral vitamin A supplementation. METHODS: This prospective, multicentre, randomised, parallel-group, double-blind, placebo-controlled, investigator-initiated phase 3 trial conducted at 29 neonatal intensive care units in Austria and Germany assessed early high-dose enteral vitamin A supplementation (5000 international units [IU]/kg per day) or placebo (peanut oil) for 28 days in ELBW infants. Eligible infants had a birthweight of more than 400 g and less than 1000 g; gestational age at birth of 32+0 weeks postmenstrual age or younger; and the need for mechanical ventilation, non-invasive respiratory support, or supplemental oxygen within the first 72 h of postnatal age after admission to the neonatal intensive care unit. Participants were randomly assigned by block randomisation with variable block sizes (two and four). All participants received basic vitamin A supplementation (1000 IU/kg per day). The composite primary endpoint was moderate or severe bronchopulmonary dysplasia or death at 36 weeks postmenstrual age, analysed in the intention-to-treat population. This trial was registered with EudraCT, 2013-001998-24. FINDINGS: Between March 2, 2015, and Feb 27, 2022, 3066 infants were screened for eligibility at the participating centres. 915 infants were included and randomly assigned to the high-dose vitamin A group (n=449) or the control group (n=466). Mean gestational age was 26·5 weeks (SD 2·0) and mean birthweight was 765 g (162). Moderate or severe bronchopulmonary dysplasia or death occurred in 171 (38%) of 449 infants in the high-dose vitamin A group versus 178 (38%) of 466 infants in the control group (adjusted odds ratio 0·99, 95% CI 0·73-1·55). The number of participants with at least one adverse event was similar between groups (256 [57%] of 449 in the high-dose vitamin A group and 281 [60%] of 466 in the control group). Serum retinol concentrations at baseline, at the end of intervention, and at 36 weeks postmenstrual age were similar in the two groups. INTERPRETATION: Early postnatal high-dose fat-soluble enteral vitamin A supplementation in ELBW infants was safe, but did not change the rate of moderate or severe bronchopulmonary dysplasia or death and did not substantially increase serum retinol concentrations. FUNDING: Deutsche Forschungsgemeinschaft and European Clinical Research Infrastructures Network (ECRIN).


Asunto(s)
Displasia Broncopulmonar , Recien Nacido con Peso al Nacer Extremadamente Bajo , Vitamina A , Humanos , Displasia Broncopulmonar/prevención & control , Displasia Broncopulmonar/mortalidad , Vitamina A/administración & dosificación , Método Doble Ciego , Recién Nacido , Masculino , Femenino , Estudios Prospectivos , Austria , Suplementos Dietéticos , Alemania , Unidades de Cuidado Intensivo Neonatal , Edad Gestacional , Vitaminas/administración & dosificación , Lactante , Resultado del Tratamiento
2.
J Aerosol Med Pulm Drug Deliv ; 31(6): 323-330, 2018 12.
Artículo en Inglés | MEDLINE | ID: mdl-29583110

RESUMEN

BACKGROUND: Vitamin A (VA) is crucial for lung growth and development. In premature infants, inadequate VA levels are associated with an increased risk of bronchopulmonary dysplasia (BPD). Intramuscular VA supplementation has been shown to decrease the incidence of BPD, but is not widely used in the clinical setting due to concerns about feasibility and pain. We studied VA kinetics, distribution, and the induction of early genetic expression of retinoid homeostatic genes in the lung after endotracheal and intravenous application in a preterm lamb model. METHODS: Lambs were delivered prematurely after 85% of gestation, intubated, and ventilated for 3 hours. The animals were randomized to receive no VA ("control"), a bolus of VA intravenously ("i.v."), or VA endotracheally directly after administration of surfactant ("e.t."). RESULTS: Animals treated with VA endotracheally directly after administration of surfactant showed significant increases of VA in serum and lung compared to controls. Animals treated with a bolus of VA intravenously showed significant increases of VA in serum, lung, and liver; however, peak serum concentrations and mRNA levels of homeostatic genes raised concerns about toxicity in this group. CONCLUSIONS: Endotracheal VA supplementation in preterm lambs is feasible and might offer advantages in comparison to i.v. Further studies are warranted to explore biological effects in the context of BPD.


Asunto(s)
Displasia Broncopulmonar/prevención & control , Pulmón/efectos de los fármacos , Surfactantes Pulmonares/administración & dosificación , Vitamina A/administración & dosificación , Vitamina A/farmacocinética , Administración por Inhalación , Animales , Animales Recién Nacidos , Modelos Animales de Enfermedad , Femenino , Edad Gestacional , Humanos , Recién Nacido , Infusiones Intravenosas , Intubación Intratraqueal , Pulmón/crecimiento & desarrollo , Embarazo , Distribución Aleatoria , Sensibilidad y Especificidad , Ovinos
3.
Wien Med Wochenschr ; 167(11-12): 264-270, 2017 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-27671007

RESUMEN

The aim of the NeoVitaA Trial is to assess the role of postnatal additional high-dose oral vitamin A supplementation for 28 days in reducing Bronchopulmonary dysplasia (BPD) or death in extremely low birth weight (ELBW) infants at 36 weeks postmenstrual age (PMA). All infants (both intervention and control group) will be provided with basic vitamin A (1000 IU/kg/day) in addition to trial intervention.In this short communication, we will give an up-date on obstacles, challenges as well as perspectives and potential solutions when putting into place a multicenter, double-blind, randomized trial in this cohort of extremely susceptible infants.


Asunto(s)
Displasia Broncopulmonar/prevención & control , Recien Nacido con Peso al Nacer Extremadamente Bajo , Vitamina A/administración & dosificación , Displasia Broncopulmonar/mortalidad , Relación Dosis-Respuesta a Droga , Método Doble Ciego , Esquema de Medicación , Nutrición Enteral , Alemania , Edad Gestacional , Humanos , Recién Nacido , Unidades de Cuidado Intensivo Neonatal
4.
Wien Med Wochenschr ; 165(9-10): 185-8, 2015 May.
Artículo en Inglés | MEDLINE | ID: mdl-25605411

RESUMEN

BACKGROUND: The use of complementary and alternative medicine (CAM) is widespread in children with cancer and is poorly regulated. PATIENTS AND METHODS: Case report. RESULTS: We describe a case of severe cyanide poisoning arising from CAM use. A severely agitated, encephalopathic, unresponsive 4-year-old boy (initial Glasgow Coma Scale of 3) with a history of metastatic ependymoma was brought to our emergency department by ambulance services. Initial blood gas analysis demonstrated severe metabolic/lactic acidosis. On detailed questioning of the parents, the use of CAM including intravenous and oral "vitamin B 17" (amygdalin) and oral apricot kernel was reported. After administering sodium thiosulfate, rapid improvement in his medical condition with complete recovery without need for further intensive care treatment was seen. Serum cyanide level was markedly elevated. CONCLUSIONS: Cyanide poisoning can be the cause of severe encephalopathy in children receiving CAM treatment with substances containing cyanogenic glycosides.


Asunto(s)
Amigdalina/envenenamiento , Neoplasias Encefálicas/tratamiento farmacológico , Terapias Complementarias/efectos adversos , Cianuros/envenenamiento , Ependimoma/tratamiento farmacológico , Nitrilos/envenenamiento , Fitoterapia/efectos adversos , Prunus armeniaca/envenenamiento , Semillas/envenenamiento , Administración Intravenosa , Administración Oral , Encefalopatías/inducido químicamente , Encefalopatías/tratamiento farmacológico , Preescolar , Humanos , Enfermedad Iatrogénica , Masculino , Tiosulfatos/uso terapéutico
5.
Neonatology ; 105(3): 182-8, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24434948

RESUMEN

BACKGROUND: Prematurity and the associated risk for bronchopulmonary dysplasia (BPD) remain a significant threat to extremely low birth weight (ELBW) infants. Vitamin A has been considered a therapeutic alternative in reducing the rate of BPD and mortality. OBJECTIVES: To investigate whether early postnatal, additional high-dose oral vitamin A supplementation for 28 days is more efficient in reducing BPD or death in ELBW infants than placebo treatment. METHODS: This is a multicenter, double-blind RCT comparing postnatal high-dose oral vitamin A supplementation (5,000 IU vitamin A/kg/day vs. placebo) for 28 days in ELBW neonates requiring mechanical ventilation, noninvasive ventilatory support or supplemental oxygen at 24 h of age. The primary end point is the proportion of children who died before 36 weeks' gestational age or developed moderate or severe BPD. BPD is defined as the need for supplemental oxygen to maintain SaO2 of ≥92% at rest at 36 weeks' postmenstrual age (PMA). Clinical secondary end points include the following: BPD (including mild form), intraventricular hemorrhage, periventricular leukomalacia, retinopathy of prematurity, necrotizing enterocolitis, total number of days of mechanical ventilation and oxygen supplementation, and safety and tolerability of high-dose vitamin A supplementation. RESULTS AND CONCLUSIONS: The results of the NeoVitaA trial will provide robust data with regard to the efficacy of high-dose oral vitamin A supplementation in reducing the incidence of BPD or death at 36 weeks' PMA in ELBW infants.


Asunto(s)
Displasia Broncopulmonar/prevención & control , Recien Nacido con Peso al Nacer Extremadamente Bajo , Pulmón/efectos de los fármacos , Proyectos de Investigación , Respiración Artificial/efectos adversos , Vitamina A/administración & dosificación , Administración Oral , Peso al Nacer , Displasia Broncopulmonar/diagnóstico , Displasia Broncopulmonar/etiología , Displasia Broncopulmonar/mortalidad , Método Doble Ciego , Esquema de Medicación , Alemania , Humanos , Lactante , Mortalidad Infantil , Recién Nacido , Pulmón/crecimiento & desarrollo , Pulmón/fisiopatología , Ventilación no Invasiva/efectos adversos , Terapia por Inhalación de Oxígeno/efectos adversos , Estudios Prospectivos , Factores de Tiempo , Resultado del Tratamiento
6.
Swiss Med Wkly ; 143: w13794, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-23740212

RESUMEN

BACKGROUND: A high prevalence of complementary and alternative medicine (CAM) use has been documented in children with chronic illnesses. Conversely, evidence-based medicine is considered an important contributor in providing the best quality of care. METHODS: We performed a systematic overview/synthesis of all Cochrane reviews published between 1995 and 2012 in paediatrics that assessed the efficacy, and clinical implications and limitations of CAM use in children. Main outcome variables were: percentage of reviews that concluded that a certain intervention provides a benefit, percentage of reviews that concluded that a certain intervention should not be performed, and percentage of studies that concluded that the current level of evidence is inconclusive. RESULTS: A total of 135 reviews were included - most from the United Kingdom (29/135), Australia (24/135) and China (24/135). Only 5/135 (3.7%) reviews gave a recommendation in favour of a certain intervention; 26/135 (19.4%) issued a conditional positive recommendation, and 9/135 (6.6%) reviews concluded that certain interventions should not be performed. Ninety-five reviews (70.3%) were inconclusive. The proportion of inconclusive reviews increased during three, a priori-defined, time intervals (1995-2000: 15/27 [55.6%]; 2001-2006: 33/44 [75%]; and 2007-2012: 47/64 [73.4%]). The three most common criticisms of the quality of the studies included were: more research needed (82/135), low methodological quality (57/135) and small number of study participants (48/135). CONCLUSIONS: Given the disproportionate number of inconclusive reviews, there is an ongoing need for high quality research to assess the potential role of CAM in children. Unless the study of CAM is performed to the same science-based standards as conventional therapies, CAM therapies risk being perpetually marginalised by mainstream medicine.


Asunto(s)
Terapias Complementarias , Medicina Basada en la Evidencia , Pediatría , Niño , Humanos , Resultado del Tratamiento
9.
Clin Neurophysiol ; 121(12): 2007-16, 2010 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-20566303

RESUMEN

OBJECTIVE: According to a widespread opinion the vast majority of infant febrile seizures (IFS) are harmless. However, IFS are often associated with hippocampal sclerosis, which should lead to deficient episodic memory with spared context-free semantic memories. Although IFS represent the most common convulsive disorder in children, these consequences are rarely examined. METHODS: We measured the hippocampal volume of 17 IFS children (7-9 years old) and an age-matched control group on the basis of MR images. Furthermore, we examined episodic and semantic memory performance with standardized neuropsychological tests. Two processes underlying recognition memory, namely familiarity and recollection, were assessed by means of event-related potentials (ERP). RESULTS: The IFS children did not show a decreased hippocampus volume. Intelligence, working memory, semantic and episodic memory were intact. However, ERP indices of recognition memory subprocesses revealed deficits in recollection-based remembering that presumably relies on the integrity of the hippocampus, whereas familiarity-based remembering seemed to be intact. CONCLUSIONS: Although hippocampus volume remains unaffected, IFS seems to induce functional changes in the MTL memory network, characterized by a compensation of recollection by familiarity-based remembering. SIGNIFICANCE: This study significantly adds to the debate on the consequences of IFS by differentiating the impact on memory processing.


Asunto(s)
Potenciales Evocados/fisiología , Trastornos de la Memoria/etiología , Memoria a Corto Plazo/fisiología , Convulsiones Febriles/complicaciones , Estimulación Acústica/métodos , Estudios de Casos y Controles , Niño , Electroencefalografía/métodos , Femenino , Hipocampo/patología , Humanos , Inteligencia , Imagen por Resonancia Magnética , Masculino , Trastornos de la Memoria/diagnóstico , Pruebas Neuropsicológicas , Tiempo de Reacción/fisiología , Reconocimiento en Psicología/fisiología , Convulsiones Febriles/patología , Semántica , Factores de Tiempo
10.
Clin Chem Lab Med ; 48(8): 1157-61, 2010 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-20482301

RESUMEN

BACKGROUND: Prematurity and small-for-gestational age (SGA) neonates are at risk for postnatal complications. Concentrations of total homocysteine (tHcy) might be related to neonatal outcome. We hypothesized that concentrations of tHcy are not related to growth restriction in neonates from mothers receiving 5 mg/day folic acid. We studied a total of 133 preterm neonates from normotensive mothers; SGA (n=96) and appropriate-for-gestational age (AGA, n=37). METHODS: Concentrations of tHcy, folate and vitamin B12 were measured in venous umbilical cord plasma. RESULTS: AGA preterm neonates had higher mean birth weight (BW) compared to SGA preterms (2472 g vs. 2007 g; p<0.001) of comparable mean gestational age (GA) (35.1 vs. 35.7 weeks; p=0.059). Concentrations of tHcy (4.86 vs. 4.95 micromol/L), folate (63.3 vs. 55.7 nmol/L), and vitamin B12 (409 vs. 394 pmol/L) were not significantly different between the groups. GA was a strong positive predictor, BW was a significant negative predictor of cord plasma folate. Vitamin B12 concentration was a significant negative predictor of cord tHcy. CONCLUSIONS: Concentrations of tHcy did not differ between SGA and AGA preterm neonates born to mothers supplemented with folic acid. This finding argues against a causal role for folate deficiency or increased tHcy in growth restriction.


Asunto(s)
Ácido Fólico/uso terapéutico , Homocisteína/sangre , Recién Nacido Pequeño para la Edad Gestacional/sangre , Adulto , Peso al Nacer , Femenino , Sangre Fetal/química , Retardo del Crecimiento Fetal/etiología , Ácido Fólico/análisis , Deficiencia de Ácido Fólico/tratamiento farmacológico , Edad Gestacional , Humanos , Recién Nacido , Madres , Valor Predictivo de las Pruebas , Embarazo , Nacimiento Prematuro , Vitamina B 12/análisis
11.
Acta Paediatr ; 98(1): 112-7, 2009 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-18785967

RESUMEN

BACKGROUND: Surfactant protein-D (SP-D) is a member of the collagenous subfamily of calcium-dependent lectins (collectins). Associations between single nucleotide polymorphisms (SNPs) of the human gene coding surfactant protein-D (SFTPD) and infectious pulmonary diseases have been established by several groups. As the outcome of very preterm infants is mainly determined by pulmonary morbidity, the aim of the present study was to investigate the potential association between sequence variations within the SFTPD gene and pulmonary morbidity in preterm infants below 32 weeks of gestational age (GA). MATERIALS AND RESULTS: Four validated SNPs were genotyped with sequence-specific probes (TaqMan 7000) in 284 newborn infants below 32 weeks of GA. An association between the SNP rs1923537 and the development of respiratory distress syndrome (RDS) in the study population was found with a lower prevalence of RDS in infants having homozygous a minor allele genotype (odds ratio = 1.733, 95% confidence interval 1.139-2.636, adjusted p = 0.0408). Consecutively, the indicated polymorphism was found to be associated with a lower number of repetitive surfactant doses, and with a lower prevalence for the requirement of oxygen supplementation on day 28, as well as the use of diuretics. CONCLUSION: The finding of an association of a variant of the SFTPD gene, that has previously been shown to be associated with increased SP-D serum levels in adult patients with acute respiratory failure, i.e. RDS in preterm infants, may provide a basis for the initial risk assessment of RDS and modification of surfactant treatment strategies. A role for SP-D in neonatal pulmonary adaptation has to be postulated.


Asunto(s)
Displasia Broncopulmonar/genética , Recien Nacido Prematuro , Polimorfismo de Nucleótido Simple , Proteína D Asociada a Surfactante Pulmonar/genética , Síndrome de Dificultad Respiratoria del Recién Nacido/genética , Adaptación Fisiológica , Intervalos de Confianza , Femenino , Variación Genética , Genotipo , Humanos , Inmunidad Innata , Recién Nacido , Modelos Logísticos , Masculino , Oportunidad Relativa , Medición de Riesgo
12.
Pain ; 137(2): 405-412, 2008 Jul 15.
Artículo en Inglés | MEDLINE | ID: mdl-18022318

RESUMEN

To investigate whether laser acupuncture is efficacious in children with headache and if active laser treatment is superior to placebo laser treatment in a prospective, randomized, double-blind, placebo-controlled trial of low level laser acupuncture in 43 children (mean age (SD) 12.3 (+/-2.6) years) with headache (either migraine (22 patients) or tension type headache (21 patients)). Patients were randomized to receive a course of 4 treatments over 4 weeks with either active or placebo laser. The treatment was highly individualised based on criteria of Traditional Chinese medicine (TCM). The primary outcome measure was a difference in numbers of headache days between baseline and the 4 months after randomization. Secondary outcome measures included a change in headache severity using a 10 cm Visual Analogue Scale (VAS) for pain and a change in monthly hours with headache. Measurements were taken during 4 weeks before randomization (baseline), at weeks 1-4, 5-8, 9-12 and 13-16 from baseline. The mean number of headaches per month decreased significantly by 6.4 days in the treated group (p<0.001) and by 1.0 days in the placebo group (p=0.22). Secondary outcome measures headache severity and monthly hours with headache decreased as well significantly at all time points compared to baseline (p<0.001) and were as well significantly lower than those of the placebo group at all time points (p<0.001). We conclude that laser acupuncture can provide a significant benefit for children with headache with active laser treatment being clearly more effective than placebo laser treatment.


Asunto(s)
Acupuntura/métodos , Envejecimiento/fisiología , Trastornos de Cefalalgia/terapia , Terapia por Láser/métodos , Acupuntura/instrumentación , Adolescente , Factores de Edad , Niño , Método Doble Ciego , Femenino , Humanos , Terapia por Láser/instrumentación , Masculino , Dimensión del Dolor/efectos de la radiación , Efecto Placebo , Placebos , Estudios Prospectivos , Resultado del Tratamiento
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA