The impact of mechanical insufflation-exsufflation on the weaning success rate of tracheostomized patients on prolonged mechanical ventilation: a pilot and feasibility study of a randomized controlled trial Cristiane Bastos Netto; Maycon Moura Reboredo; Rodrigo Souza Vieira; Lídia Maria Carneiro da Fonseca; Elivaldo Cyrillo Júnior; André Luís Dias de Souza; Erich Vidal Carvalho; Bruno Valle Pinheiro;