56.在經過幾次氣管插管不成功的嘗試後,可用下列何種方式以確保氣道的通暢?
(A)Guedel airway
(B)Berman airway
(C)nasopharyngeal airway
(D)laryngeal mask airway
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統計: A(17), B(16), C(80), D(487), E(0) #1946507
統計: A(17), B(16), C(80), D(487), E(0) #1946507