Table 1.

Demographic details

Characteristics	Patient A	Patient B	Patient C	Patient D
Age (years)	25	69	69	70
Gender	Male	Female	Male	Male
Diagnosis	Road traffic accident Traumatic Brain injury	Type II respiratory failure OSA	Carcinoma oropharynx – poorly differentiated SCC with airway obstruction	CAP with Type II respiratory failure ARDS
Length of ICU stay (days)	20	4	4	21