SummaryWe compared the Baska â mask with the single-use classic laryngeal mask airway (cLMA) in 150 females at low risk for difficult tracheal intubation in a randomised, controlled clinical trial. We found that median (IQR [range]) seal pressure was significantly higher with the Baska mask compared with the cLMA (40 (34-40 [16-40]) vs 22 (18-25 [14-40]) cmH 2 O, respectively, p < 0.001), indicating a better seal. In contrast, the first time success rate for insertion of the Baska mask was lower than that seen with the cLMA (52/71 (73%) vs 77/99 (98%), respectively, p < 0.001). There were no differences in overall device insertion success rates (78/79 (99%) vs 68/71 (96%), respectively, p = 0.54). The Baska mask proved more difficult to insert, requiring more insertion attempts, taking longer to insert and had higher median (IQR [range]) insertion difficulty scores (1.6 (0.8-2.2 [0.1-5.6]) vs 0.5 (0.3-1.4 [0.1-4.0]), respectively, p < 0.001). There was also an increased rate of minor blood staining of the Baska mask after removal, but there were no differences in other complication rates, such as laryngospasm, or in the severity of throat discomfort. In conclusion, in clinical situations where the seal with the glottic aperture takes priority over ease of insertion,

Introduction: Spontaneous breathing with a conventional T-tube (TT) connected to the endotracheal tube has been frequently used in weaning from mechanical ventilation (MV), when compared with pressure support ventilation (PSV). However, the acute effects of spontaneous breathing using TT versus PSV on respiratory functional parameters (PaCO2 and SaO2) have not been fully demonstrated. Objective: The purpose of this study was to examine the effects of weaning using spontaneous breathing in TT compared to PSV on respiratory functional parameters in critically ill patients. Method: Twenty-six patients who had received MV for more than 48h and met the inclusion criteria for weaning were assessed. The patients were randomized into 2 groups. first group weaned using TT and second weaned using PSV. Respiratory functional parameters included pressure of carbon diaxoide (PaCO2), peripheral oxygen saturation (SpO2) were measured. Results: PSV mode had statistically significantly lower PaCO2 than TT mode during weaning (P<0.001). Also, PSV mode had statistically significantly higher SaO2 than TT mode during weaning (P=0.007). Conclusion: PSV improves oxygenation and ventilation of patients during weaning from mechanical ventilation.

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