Comparison of Miller's Blade and Airtraq Laryngoscope in Children

Government Medical College, Haldwani

Status: Completed

Conditions: Intubation, Intratracheal

Treatments: Device: Intubation with Airtraq; Device: Intubation with Miller's blade

Study type: Interventional

Funder types: Other

Identifiers

NCT02423317

DN 182/FM

Details and patient eligibility

About

The Airtraq optical laryngoscope has recently been available in pediatric sizes. The investigators compared the efficacy of Airtraq with the Miller laryngoscope as intubation devices in paediatric patients. This prospective, randomized study was conducted in a tertiary care teaching hospital. Sixty American Society of Anesthesiologists (ASA) grade I-II paediatric patients of 2-10 years, posted for routine surgery requiring tracheal intubation were randomly allocated to undergo intubation using a Miller (n = 30) or Airtraq (n = 30) laryngoscope. The primary outcome measures were time of intubation, ease of intubation, number of attempts and POGO score. We also measured hemodynamic changes and airway trauma.

Full description

After approval from the institutional Ethical Committee, 60 patients were studied. A randomised prospective study was planned to compare size 1 Airtraq (Prodol Meditec S.A., Vizcaya, Spain) with Miller blade of same size.

The children included in the study were 2-10 years of age, American Society of Anesthesiologists (ASA) physical status I-II and posted for elective surgeries requiring tracheal intubation. The following were excluded from the study: (i) patients with upper respiratory tract symptoms, (ii) those at risk of gastroesophageal regurgitation and (iii) those with airway-related conditions such a trismus, limited mouth opening, trauma or mass. Sixty patients were equally randomized to one of the two groups (Airtraq and Miller) of 30 each for airway management using a computer-generated randomization program.

Written informed consent was taken from the parents prior to intervention and a standardized protocol for anesthesia was maintained for all cases. All the children were kept nil per mouth as per standard guidelines. Intubation attempts were taken using Airtraq or Miller on a random basis.

Enrollment: 60 patients

Sex: All

Ages: 2 to 10 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. American Society of Anesthesiologists physical status I-II,
2. elective surgeries requiring tracheal intubation

Exclusion criteria

1. patients with upper respiratory tract symptoms,
2. those at risk of gastroesophageal regurgitation and
3. those with airway-related conditions such a trismus, limited mouth opening, trauma or mass.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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60 participants in 2 patient groups

Intubation with Miller's blade

Active Comparator group

Description:

After induction and muscle paralysis, Miller's blade was introduced in the patient's mouth. After visualization of vocal cord, patient was intubated with appropriate sized tracheal tube.

Treatment:

Device: Intubation with Miller's blade

Intubation with Airtraq laryngoscope

Experimental group

Description:

After induction and muscle paralysis, Airtraq laryngoscope's blade was introduced in the patient's mouth. After visualization of vocal cord as a reflected image in the viewfinder of the device, patient was intubated with appropriate sized tracheal tube.

Treatment:

Device: Intubation with Airtraq