Q: After how many failed attempts of intubations, chances of complications and death rise exponentially?


Answers: 2

In contrast to previously accepted 3 attempts, recently published data showed that after two failed attempts to insert End-Tracheal Tube (ETT), risk of complications and death go high.



Reference: 

 Buis ML, Maissan IM, Hoeks SE, et al. Defining the learning curve for endotracheal intubation using direct laryngoscopy: A systematic review. Resuscitation 2016; 99:63.