Comparison of different mechanical ventilators for patients with poliomyelitis.

Poliomyelitis can affect patients with severe hypoxia and hypercapnia. Historically, most of these patients were supported by mechanical ventilation via tracheostomy. However, this procedure can lead to serious complications. Subsequently, non-invasive alternative procedures have been introduced that provide mechanical respiratory support; these include negative pressure ventilators and positive pressure ventilation via a nasal, oral, and oronasal interface. Although these ventilators are effective, various limitations have been noted. The strapless oronasal interface positive pressure ventilator appears to have the fewest limitations, and through the use of advanced dental techniques and improved dental materials, this ventilator is easily fabricated and has been noted by patients to be more comfortable.