The Rotational Insertion Technique for ProSeal Laryngeal Mask Airway

Seoul National University

Status: Completed

Conditions: Elective Surgery; General Anesthesia

Treatments: Procedure: Insertion fo ProSeal laryngeal mask airway

Study type: Interventional

Funder types: Other

Identifiers

NCT00966186

jungwon

Details and patient eligibility

About

The purpose of this study is to compare two insertion techniques of large size ProSeal laryngeal mask airway. We hypothesized that insertion of ProSeal laryngeal mask airway with 90-degree rotation would reduce the contact surface between the device and pharyngeal wall and make it easy to advance the device over the smooth angle against the posterior pharyngeal wall.We compared the success rate and incidence of complication of the standard technique with the rotational technique.

Full description

ProSeal laryngeal mask airway is not easy to be inserted due to its larger cuff especially in Asian population. First-time insertion success rate was lower and more time was required to achieve an effective airway even in well-trained physician. A number of techniques have been described to improve the insertion success rate. However, these techniques are only recommended to be used as backup when the digital or introducer tool techniques fail. We hypothesized that insertion of ProSeal laryngeal mask airway with 90-degree rotation would reduce the contact surface between the device and pharyngeal wall and make it easy to advance the device over the smooth angle against the posterior pharyngeal wall.We compared the success rate and incidence of complication of the standard technique with the rotational technique.

Enrollment: 120 patients

Sex: All

Ages: 27 to 75 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• American Society of Anesthesiologists physical status I-II

Exclusion criteria

• Predicted difficult airway
• Mouth opening less than 2.5 cm
• Present sore throat
• High risk of aspiration

Trial design

120 participants in 2 patient groups

Standard technique

Active Comparator group

Description:

Proseal laryngeal mask airway was inserted according to the manufacture's instruction manual (insertion with help of index finger insertion)

Treatment:

Procedure: Insertion fo ProSeal laryngeal mask airway

Rotational technique

Experimental group

Description:

The entire cuff of the PLMA was placed in the mouth without finger insertion in a midline approach and was rotated 90 degrees counterclockwise around the tongue. The PLMA was then advanced and rotated back until resistance was fel

Treatment:

Procedure: Insertion fo ProSeal laryngeal mask airway