Comparison Between Mcgrath And Macintosh Laryngocopes As An Educational Tool For Successful Intubation By Untrained Doctors

The study is being conducted to compare the performance of the Mcgrath videolaryngoscope with Macintosh laryngoscope to teach untrained doctors to do successful endotracheal intubation in an intubating mannequin.

Study design is a randomised controlled crossover study.

The final year medical students are taught to do laryngoscopy and endotracheal intubation with Macintosh laryngoscope and Mcgrath videolaryngoscope. They are taught using structured lecture, video demonstration and practice on the intubating mannequin. After 14 days of the training the students are randomised to two groups with computer generated random numbers in sealed opaque envelopes. Group AB will do intubation on the mannequin with Macintosh followed by Mcgrath videolaryngoscope. Group BA will do intubation with Mcgrath Videolaryngoscope followed by Macintosh.  They will be assessed for Time taken for succesful intubation and Number of attempts for a successful intubation. Ease of Intubation and Ease of glottis visualisation is measured on the Likert scale.

STATISTICAL ANALYSIS

·       Sample size calculated for 80% power and an alpha error of 5% was 38 in each group

·       A difference of >10 seconds in intubation time was taken as significant.