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

NCT01843270 | Completed

• 1 other identifier: 1-2013-0004
• Study Type: interventional
• Target: 100
• Locations: 1 country
• Sites: 1

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

Keywords

general anesthesia; body weight; laryngeal mask airway size

Outcome Measures

Primary Outcomes (1)

• Oropharyngeal leak pressure

  Oropharyngeal leak pressure is measured when the airway pressure becomes the plateau state in condition of gas flow 3 L/min and flow out valve 30 cmH2O.

  10mins

Study Arms (2)

ideal body weight

EXPERIMENTAL

LMA size based on ideal body weight

Device: ideal body weight based size

actual body weight

EXPERIMENTAL

LMA size according to actual body weight

Device: actual body weight based size

Interventions

actual body weight based size 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

ideal body weight based size DEVICE

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

ideal body weight

Eligibility Criteria

• Age: 20 Years - 70 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

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

You may not qualify if:

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

Sponsors & Collaborators

• Yonsei University: lead

Study Sites (1)

Severance Hospital

Seoul, Seoul, 120-752, South Korea

Location

Related Publications (1)

• 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.

  PMID: 26240500 DERIVED

MeSH Terms

Conditions

Body Weight

Condition Hierarchy (Ancestors)

Signs and Symptoms; Pathological Conditions, Signs and Symptoms

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: PREVENTION
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: April 23, 2013
• First Posted: April 30, 2013
• Study Start: November 1, 2013
• Primary Completion: September 1, 2014
• Study Completion: September 1, 2014
• Last Updated: September 29, 2014

Record last verified: 2014-01

Locations

KR (1)