ResumoAvaliou-se o efeito da atmosfera modificada ativa na qualidade de abóbora minimamente processada (MP). Os pedaços de abóbora foram acondicionados em embalagens plásticas e submetidos a aplicação de gases nas seguintes concentrações: 0,03% CO 2 e 21% O 2 (controle T1); 5% CO 2 e 4% O 2 (T2); 6% CO 2 e 4% O 2 (T3); 7% CO 2 e 4% O 2 (T4); 8% CO 2 e 4% O 2 (T5). No T6 foi feita aplicação de vácuo na embalagem. As embalagens contendo as abóboras MP foram armazenadas à temperatura de 5 o C e umidade relativa de 75% durante 12 dias. As análises realizadas foram perda de massa, acidez total (AT), pH, sólidos solúveis (SS), ratio, firmeza, cor, atividade antioxidante por DPPH e teor de carotenóides. A perda de massa foi gradual e baixa até o nono dia de armazenamento. Os valores de AT aumentaram ao longo do período experimental sendo superior para os T1 e T2. O aumento de SS durante o armazenamento das abóboras MP foi menor para os T3 e T4. A luminosidade se manteve durante o armazenamento sendo superior para o T5. Os componentes de cor vermelho e amarelo diminuíram ao longo do período experimental. A atividade antioxidante e teores de carotenóides diminuíram após o nono dia de armazenamento. A abóbora MP manteve sua qualidade até o 9º dia de armazenamento, com superioridade para os tratamentos T3 e T4 no que se refere aos valores de perda de massa, AT e teores de carotenóides. Palavras-chave: Curcubita máxima Duchesne, atividade antioxidante, carotenóides AbstractThe active modified atmosphere effect was evaluated in the quality of squash fresh-cut (MP).. The squash pieces were conditioned in plastic packings and submitted the gases application in the following concentrations: 0.03% CO 2 and 21% O 2 (controls T1); 5% CO 2 and 4% O 2 (T2); 6% CO 2 and 4% O 2 (T3); 7% CO 2 and 4% O 2 (T4); 8% CO 2 and 4% O 2 (T5). In T6 it was made vacuum application in the packing. The packings containing the squash were stored in to the temperature of 10 o C and relative humidity of 75% for 12 days. The evaluated analyses were weigth loss, total acidity (AT), pH, soluble solids (SS), ratio, firmness, color, antioxidant activity for DPPH and carotenoids content. The weigth loss was gradual and low until the ninth day of storage. The values of AT increased along the experimental period being superior for T1 and T2. The increase of SS during the storage of the freshcut squash went smaller for T3 and T4. The brightness stayed during the storage being superior for T5, already the color components red and yellow decreased along the experimental period. The antioxidant

Supporting patients with acute respiratory distress syndrome (ARDS), using a protective mechanical ventilation strategy characterized by low tidal volume and limitation of positive end-expiratory pressure (PEEP) is a standard practice in the intensive care unit. However, these strategies can promote lung de-recruitment, leading to the cyclic closing and reopening of collapsed alveoli and small airways. Recruitment maneuvers (RM) can be used to augment other methods, like positive end-expiratory pressure and positioning, to improve aerated lung volume. Clinical practice varies widely, and the optimal method and patient selection for recruitment maneuvers have not been determined, considerable uncertainty remaining regarding the appropriateness of RM. This review aims to discuss recent findings about the available types of RM, and compare the effectiveness, indications and adverse effects among them, as well as their impact on morbidity and mortality in ARDS patients. Recent developments include experimental and clinical evidence that a stepwise extended recruitment maneuver may cause an improvement in aerated lung volume and decrease the biological impact seen with the traditionally used sustained inflation, with less adverse effects. Prone positioning can reduce mortality in severe ARDS patients and may be an useful adjunct to recruitment maneuvers and advanced ventilatory strategies, such noisy ventilation and BIVENT, which have been useful in providing lung recruitment.