Blind intubation through a supraglottic airway device (SAD), in this case, the laryngeal mask airway (LMA) Fastrach. Blind intubation through a supraglottic airway device (SAD), in this case, the laryngeal mask airway (LMA) Fastrach. During blind intubation, it is important to align the tracheal tube with the glottic opening, as the figure demonstrates. ETT = endotracheal tube. Courtesy Teleflex Medical. Satya Krishna Ramachandran, and Anjana M Kumar Respir Care 2014;59:920-932 (c) 2012 by Daedalus Enterprises, Inc.