Assertion: conventional endotracheal tube | /r/HasProperty | ett-c
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text: The study was designed to compare the incidence of VAP, using a new commercially available endotracheal tube incorporating two potential strategies to prevent VAP, an ultrathin polyurethane cuff and subglottic secretion drainage (ETT-PUC-SSD), versus a conventional endotracheal tube (ETT-C) with polyvinyl cuff and without SSD.