Tracheostomy Emergencies in Adults – Definition

Which of the following statements is true regarding tracheostomies and laryngectomies?

The majority of laryngectomies are performed percutaneously for carcinoma
Supraglottic airway devices may be used in an emergency to oxygenate a laryngectomy patient
If the indication for tracheostomy was impossible intubation, there is no benefit to oxygenating via nose or mouth
Uncuffed or fenestrated tubes are less effective than cuffed tubes during positive pressure ventilation
All laryngectomy patients require some sort of tracheostomy tube in situ to allow oesophageal speech