Explain at what point a ventilator patient must be converted from an endotracheal tube to a tracheostomy tube

THIS IS A GRADUATE NURSE PRATRITIONER PROGRAM. REPORT MUST BE OF GRADUATE LEVEL AND STANDARD WITH APPROPRIATE REFERENCE WITHIN 5 YEARS AND 7TH EDITION APA STYLE . MINIMUM OF 250 WORDS or all part of question asked in sub topic WITH AT LEAST 2 PEER REVIEW REFERENCE Explain at what point a ventilator patient must be converted from an endotracheal tube to a tracheostomy tube