Figure 1From: Percutaneous and surgical tracheostomy in critically ill adult patients: a meta-analysisLiterature search and selection. BDT, balloon dilatation tracheotomy; GWDF, guide wire dilatation forceps; MDT, multiple dilatation tracheotomy; n, number; PT, percutaneous tracheotomy; RCT, randomized controlled trial; RDT, rotational dilatation tracheotomy; SSDT, single-step dilatation tracheotomy; ST, surgical tracheotomy.Back to article page