Appropriate Laryngeal Mask Airway Size in Patients With Overweight: A Comparison of the Actual Body Weight and Ideal Body Weight

NCT ID: NCT01843270

Last Updated: 2014-09-29

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 100 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2013-11-30
• Study Completion Date: 2014-09-30

Brief Summary

The classic laryngeal mask airway is one of the keystones of modern anaesthetic practice. It achieves a reliable airway with a low incidence of major complications and pharynges-laryngeal morbidity. The manufactures of laryngeal mask airway recommend the proper size selection by actual body weight. It was recommended a size 3 for 30-70kg, a size 4 for 70-90 kg, and size 5 for > 90 kg. Obesity increases the fat tissue around an upper airway and decreases the pharyngeal cross sectional area. Also it was reported that pharyngeal area was reduced according to the increasing of BMI. Therefore, the aim of this study is to determine which of actual body weight or ideal body weight is proper on the size selection of laryngeal mask airway.

Conditions

General Anesthesia

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: PREVENTION
• Blinding Strategy: NONE

Study Groups

ideal body weight

LMA size based on ideal body weight

Group Type: EXPERIMENTAL

ideal body weight based size

Intervention Type: DEVICE

According randomized allocated group, the laryngeal mask airway is inserted based on actual or ideal body weight-based sizes before the surgery.

actual body weight

LMA size according to actual body weight

Group Type: EXPERIMENTAL

actual body weight based size

Intervention Type: DEVICE

According randomized allocated group, the laryngeal mask airway is inserted based on actual or ideal body weight-based sizes before the surgery.

Interventions

actual body weight based size

According randomized allocated group, the laryngeal mask airway is inserted based on actual or ideal body weight-based sizes before the surgery.

Intervention Type: DEVICE

ideal body weight based size

According randomized allocated group, the laryngeal mask airway is inserted based on actual or ideal body weight-based sizes before the surgery.

Intervention Type: DEVICE

Eligibility Criteria

Inclusion Criteria

• age 20~70
• body mass index > 25 kg/m2
• patient who needs surgery with laryngeal mask airway

Exclusion Criteria

• difficult airway
• upper airway infection or disease of airway
• history of gastroesophageal reflux
• history of head and neck surgery

• Minimum Eligible Age: 20 Years
• Maximum Eligible Age: 70 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Yonsei University

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Locations

Severance Hospital

Seoul, Seoul, South Korea

Countries

South Korea

References

Kim MS, Lee JS, Nam SB, Kang HJ, Kim JE. Randomized Comparison of Actual and Ideal Body Weight for Size Selection of the Laryngeal Mask Airway Classic in Overweight Patients. J Korean Med Sci. 2015 Aug;30(8):1197-202. doi: 10.3346/jkms.2015.30.8.1197. Epub 2015 Jul 15.

Reference Type: DERIVED

PMID: 26240500 (View on PubMed)

Other Identifiers

1-2013-0004

Identifier Type: -

Identifier Source: org_study_id