1/1/2023 0 Comments Nitrous oxide stage 4![]() ResultsĪccording to the up-and-down method, the N 2O fraction in O 2 at which all patients exhibited successful lung collapse was 50%. The EC 50 and EC 95 of N 2O in O 2 for rapid lung collapse were analyzed using a probit test. The testing interval was set at 10%, and the lowest concentration was 10% (10, 20, 30, 40%, or 50%). ![]() The first patient received 30% N 2O in O 2, and the subsequent N 2O fraction in O 2 was determined by the LCS of the previous patient using the Dixon up-and-down method. The lung collapse score (LCS) of each patient during one-lung ventilation was evaluated by the same surgeon. This study included 38 consecutive patients undergoing video-assisted thoracoscopic surgery (VATS). Accordingly, this prospective trial aimed to determine the 50% effective concentration (EC 50) and 95% effective concentration (EC 95) of N 2O in O 2 for rapid lung collapse. ![]() ![]() The ideal fraction of nitrous oxide (N 2O) in oxygen (O 2) for rapid lung collapse remains unclear. ![]()
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January 2023
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