Miller Straight Blade vs Macintosh Blade

Study Results

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

150 participants

Study Classification

INTERVENTIONAL

Study Start Date

2010-01-31

Study Completion Date

2010-12-31

Brief Summary

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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.

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Detailed Description

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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.

Conditions

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Intubation; Difficult

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Blinding Strategy

NONE

Study Groups

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Miller group

In Miller group, no 3 Miller blade was used for laryngoscopy by paraglossal technique. While intubating, the endotracheal tube (ETT) was directed underneath the laryngoscope blade without allowing it to go lateral to the blade. The curvature of the ETT automatically brings the tip towards the vocal cords as it was advanced. After successful endotracheal intubation, the ETT was attached to the circuit and anaesthesia continued as per plan.

Group Type EXPERIMENTAL

Miller group

Intervention Type OTHER

Miller blade was used for laryngoscopy

Macintosh group

In Macintosh group, the curved blade was introduced to lift the base of the epiglottis to visualize larynx and then trachea intubated conventionally.After successful endotracheal intubation, the ETT was attached to the circuit and anaesthesia continued as per plan.

Group Type OTHER