Miller Straight Blade vs Macintosh Blade

Miller Straight Blade With Paraglossal Technique Compared to the Macintosh Blade in Respect to Visualization of Larynx and Ease of Intubation

The purpose of this prospective open labeled randomized study was to compare the "laryngoscopic glottis view" as well as "ease of intubation" between the two blades in routine intubations in non-difficult airways.

One hundred and fifty patients with predicted non difficult airway were randomly assigned into two groups. After induction of anaesthesia laryngoscopy was performed with respective blades and trachea intubated. Parameters monitored were: glottis view obtained during laryngoscopy (Cormack Lehane grade), ease of intubation, intubation attempts, total duration of laryngoscopy in seconds and encountered complications.

Inclusion Criteria:

• All ASA I & II grade patients undergoing elective surgery requiring general anesthesia with oral endotracheal intubation

Exclusion Criteria:

• Patients with anticipated difficult airway
• Cervical spine disorders
• Anesthesia requiring rapid sequence induction