Navegando por Palavras-chave "ventilação pulmonar"

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    Avaliação do pico de pressão e da freqüência respiratória durante o uso de balão auto-inflável em um modelo de pulmão neonatal
    (Sociedade Brasileira de Pediatria, 2006-10-01) Resende, Jefferson G.; Menezes, Cristiane G.; Paula, Ana M. C.; Ferreira, Antonio C. P. [UNIFESP]; Zaconeta, Carlos A. M.; Silva, César A. M.; Rodrigues, Marcelo P.; Tavares, Paulo; Universidade de Brasília; Secretaria de Saúde do Distrito Federal Escola Superior de Ciências da Saúde; Universidade Federal de São Paulo (UNIFESP); Universidade de Brasília Hospital Universitário
    OBJECTIVE: To evaluate the peak inspiratory pressure and ventilation rate achieved by physicians when using a neonatal self-inflating bag on a lung model. METHODS: Fifteen physicians ventilated full term and preterm infant lung simulators while the outcomes were captured by a ventilation monitor. RESULTS: Median peak pressures in cmH2O for full term and preterm lungs were 23 (interquartile range: 15-47) and 26 (interquartile range: 14-51), being less than 20 in 41.2 and 35.8% of the pressure curves analyzed, more than 40 in 29.7 and 33.6%, and between 27 and 33 cmH2O in 8.2 and 6.5% of the curves, respectively. Median ventilation rates were 45 (interquartile range: 36-57) and 48 (interquartile range: 39-55.5) cycles per minute, being more than 30 in 9.3 and 6.7% of pressure curves and more than 60 in 12 and 13.3% of pressure curves, for the full term and preterm lungs, respectively. The differences between these medians were not statistically significant. CONCLUSIONS: Ventilation rates achieved with the self-inflating bag were adequate in approximately 80% of pressure curves analyzed, but the physicians were unable to provide ventilation with minimal pressure variation, producing pressures that diverged from those defined by the neonatal resuscitation training course in 70% of the curves. This was irrespective of whether they were ventilating the lung model analogous to preterm or full term infant lungs.
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    Fatores que afetam a ventilação com o reanimador manual autoinflável: uma revisão sistemática
    (Sociedade de Pediatria de São Paulo, 2011-12-01) Oliveira, Pricila Mara Novais de [UNIFESP]; Almeida-Junior, Armando Augusto; Almeida, Celize Cruz Bresciani; Ribeiro, Maria Ângela Gonçalves de Oliveira; Ribeiro, José Dirceu; Universidade Estadual de Campinas (UNICAMP); Universidade Federal de São Paulo (UNIFESP)
    OBJECTIVE: The manual resuscitator (RM) is a device that provides positive pressure ventilation. Surveys conducted to assess the adequacy of manual resuscitators to American Society for Testing and Materials standards show that several factors affect manual ventilation. However, results are conflicting. The aim of this study was to verify evidence of factors that influence pediatric/adult pulmonary ventilation with manual resuscitator by a systematic review. DATA SOURCE: Original articles indexed in Medline, Lilacs and SciELO published from January 1986 to March 2011. The key-words used were: manual resuscitator, manual ventilation, positive pressure ventilation in Portuguese and English, as well as bag-valve. DATA SYNTHESIS: 45 articles were selected, most of them experimental. The studies compared manual resuscitator brands and models, and analyzed the physical characteristics of professionals. The effectiveness of ventilation with manual resuscitator depends on the brand, model and functional characteristics of the equipment. Ventilation also varies with the education, training and experience of the professional who handles the equipment. Other factors that can influence effectiveness are the manual resuscitator compression form, the use of a pressure relief valve and the flow of oxygen provided to the manual resuscitator. CONCLUSIONS: The variability of ventilatory parameters during manual resuscitation does not allow a standardization of the technique, being harmful to cardiopulmonary resuscitation. Although most manual resuscitator seem to follow international standards, the equipment must be evaluated in the clinical settings. There are few studies about pediatric and neonatal manual resuscitator models.