Dopamine was associated with an increased risk of death and healthcare-associated infection. Early administration of peripheral or intraosseous epinephrine was associated with increased survival in this population. Limitations should be observed while interpreting these results.

The incidence of life support limitation has increased among Brazilian PICUs but with significant regional differences. Do-not-resuscitate orders are still the most common practice, with scarce initiatives for withdrawing or withholding life support measures.

A daily evaluation to check readiness for weaning combined with a spontaneous breathing test reduced the mechanical ventilation duration for children on mechanical ventilation for >24 hrs, without increasing the extubation failure rate or the need for noninvasive ventilation.

We observed high prevalence of sepsis and sepsis-related mortality among this sample of children admitted to PICU in South America. Mortality was associated with greater severity of illness at admission and potentially associated with late PICU referral.

Objective: The objective of this study was to evaluate the ratio of dead space to tidal volume (VD/VT) as a predictor of extubation failure of children from mechanical ventilation.Methods: From September 2001 to January 2003 we studied a cohort consisting of all children (1 day-15 years) submitted to mechanical ventilation at a pediatric intensive care unit who were extubated and for whom pre-extubation ventilometry data were available, including the VD/VT ratio. Extubation success was defined as no need for any type of ventilatory support, invasive or otherwise, within 48 hours. Patients who tolerated extubation, with or without noninvasive support, were defined as success-R and compared with those who were reintubated. Statistic analysis was based on a VD/VT cutoff point of 0.65.Results: During the study period 250 children received mechanical ventilation at the pediatric intensive care unit. Eighty-six of these children comprised the study sample. Twenty-one children (24.4%) met the criteria for extubation failure, with 11 (12.8%) of these requiring non-invasive support and 10 (11.6%) reintubation. Their mean age was 16.8 (±30.1) months (median = 5.5 months). The mean VD/VT ratio for all cases was 0.62 (±0.18). Mean VD/VT ratios for patients with successful and failed extubations were 0.62 (±0.17) and 0.65 (±0.21) (p = 0.472), respectively. Logistic regression failed to reveal any statistically significant correlation between VD/VT ratio and success or failure of extubation (p = 0.8458), even for patients who were reintubated (p = 0.5576). Conclusions:In a pediatric population receiving mechanical ventilation due to a variety of etiologies, the VD/VT ratio was unable to predict the populations at risk of extubation failure or of reintubation.

Respiratory syncytial virus (RSV) bronchiolitis is the leading cause of lower respiratory tract infection, and the most frequent reason for hospitalization among infants throughout the world. In addition to the acute consequences of the disease, RSV bronchiolitis in early childhood is related to further development of recurrent wheezing and asthma. Despite the medical and economic burden of the disease, therapeutic options are limited to supportive measures, and mechanical ventilation in severe cases. Growing evidence suggests an important role of changes in pulmonary surfactant content and composition in the pathogenesis of severe RSV bronchiolitis. Besides the well-known importance of pulmonary surfactant in maintenance of pulmonary homeostasis and lung mechanics, the surfactant proteins SP-A and SP-D are essential components of the pulmonary innate immune system. Deficiencies of such proteins, which develop in severe RSV bronchiolitis, may be related to impairment in viral clearance, and exacerbated inflammatory response. A comprehensive understanding of the role of the pulmonary surfactant in the pathogenesis of the disease may help the development of new treatment strategies. We conducted a review of the literature to analyze the evidences of pulmonary surfactant changes in the pathogenesis of severe RSV bronchiolitis, its relation to the inflammatory and immune response, and the possible role of pulmonary surfactant replacement in the treatment of the disease.

NEEP-Br) 9Resumo Objetivo: Avaliar a incidência de morte encefálica (ME), bem como as condutas e protocolos adotados após confirmação diagnóstica em sete unidades de tratamento intensivo pediátrico (UTIP) localizadas em três regiões brasileiras. Métodos:Estudo transversal e multicêntrico baseado na revisão e análise retrospectiva de prontuários de todos os óbitos ocorridos entre janeiro de 2003 e dezembro de 2004 em sete UTIP localizadas em Porto Alegre (duas), São Paulo (duas) e Salvador (três). Dois residentes de cada serviço previamente treinados preencheram protocolo padronizado avaliando dados demográficos, causa do óbito, critérios para diagnóstico de ME e conduta médica adotada. Resultados:Identificamos 525 óbitos, sendo 61 (11,6%) com diagnóstico de ME. A incidência de ME diferiu entre as sete UTIP (24,2 a 4,5%; p = 0,015), porém sem diferença nas três regiões (12, 15 e 7%; p = 0,052). A causa mais freqüente foi hemorragia intracraniana (31,1%). Em 80% dos casos, o diagnóstico clínico de ME foi confirmado por exame complementar (100% na Região Sul, 68% na Sudeste e 72% na Nordeste, p = 0,02). A retirada de suporte vital após diagnóstico de ME diferiu nas três regiões, sendo mais rápida (p = 0,04) no Sul (1,8±1,9 h) que no Sudeste (28,6±43,2 h) e Nordeste (15,5±17,1 h). Apenas seis (9,8%) crianças com ME foram doadoras de órgãos.Conclusão: Apesar da lei que define critérios para ME existir no Brasil desde 1997, verificamos que ela não é obedecida uniformemente. Conseqüentemente, suporte vital desnecessário é ofertado a indivíduos já mortos, existindo ainda um modesto envolvimento das UTIP com doações de órgãos.J Pediatr (Rio J). 2007;83(2):133-140: Morte encefálica, doação de órgãos, terapia intensiva pediátrica, ética médica. AbstractObjective: To assess the incidence of brain death (BD) and its medical management and adopted protocols after its diagnosis in seven pediatric intensive care units (PICUs) located in three Brazilian regions. Methods:A cross-sectional and multicenter study was conducted, based on the retrospective review of medical records regarding all deaths that occurred between January 2003 and December 2004 in seven Brazilian PICUs of tertiary hospitals located in Porto Alegre (two), São Paulo (two) and Salvador (three). Two pediatric intensive care residents from each hospital were previously trained and filled out a standard protocol for the investigation of demographic data, cause of death, diagnosis of BD, related protocols and subsequent medical management.Results: A total of 525 death patients were identified and 61 (11.6%) were defined as BD. The incidence of BD was different (p = 0.015) across the seven PICUs, but with no difference across the three regions. Intracranial hemorrhage was the most frequent cause of BD (31.1%). In 80% of the cases the diagnosis of BD was confirmed by complementary exams (south = 100%, southeast = 68% and northeast = 72%; p = 0.02). The interval between the diagnosis of BD and the withdrawal of life support was different (p < 0.01) across the three reg...

Introduction Noninvasive ventilation is a safe and eff ective method to treat acute respiratory failure, minimizing the respiratory workload and oxygenation. Few studies compare the effi cacy of diff erent types of noninvasive ventilation interfaces and their adaptation. Objective To identify the most frequently noninvasive ventilation interfaces used and eventual problems related to their adaptation in critically ill patients. Methods We conducted an observational study, with patients older than 18 years old admitted to the intensive care and step-down units of the Albert Einstein Jewish Hospital that used noninvasive ventilation. We collected data such as reason to use noninvasive ventilation, interface used, scheme of noninvasive ventilation used (continuously, periods or nocturnal use), adaptation, and reasons for nonadaptation. Results We evaluated 245 patients with a median age of 82 years (range of 20 to 107 years). Acute respiratory failure was the most frequent cause of noninvasive ventilation used (71.3%), followed by pulmonary expansion (10.24%), after mechanical ventilation weaning (6.14%) and sleep obstructive apnea (8.6%). The most frequently used interface was total face masks (74.7%), followed by facial masks in 24.5% of the patients, and 0.8% used performax masks. The use of noninvasive ventilation for periods (82.4%) was the most common scheme of use, with 10.6% using it continuously and 6.9% during the nocturnal period only. Interface adaptation occurred in 76% of the patients; the 24% that did not adapt had their interface changed to improve adaptation afterwards. The total face mask had 75.5% of interface adaptation, the facial mask had 80% and no adaptation occurred in patients that used the performax mask. The face format was the most frequent cause of nonadaptation in 30.5% of the patients, followed by patient's related discomfort (28.8%), air leaking (27.7%), claustrophobia (18.6%), noncollaborative patient (10.1%), patient agitation (6.7%), facial trauma or lesion (1.7%), type of mask fi xation (1.7%), and 1.7% patients with other causes. Conclusion Acute respiratory failure was the most frequent reason for noninvasive ventilation use, with the total face mask being the most frequent interface used. The most common causes of interface nonadaptation were face format, patient-related discomfort and air leaking, showing improvement of adaptation after changing the interface used. P2 Exercise training reduces oxidative damage in skeletal muscle of septic rats