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OpenTrials
Completed

NCT Number: NCT01843270

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

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.

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Key information

Conditions

General Anesthesia Body Weight Pathological Conditions, Signs and Symptoms Signs and Symptoms

Age range

20 year–70 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Severance Hospital

Seoul, 120-752, South Korea

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

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.

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.

Primary outcomes

  1. Oropharyngeal leak pressure

    Time frame: 10mins

    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.

Sponsors and collaborators

Lead sponsor

Yonsei University

Other

Registry information

Important dates

Study start
2013
Primary completion
2014
Study completion
2014
First posted
Apr 30, 2013
Registry last updated
Sep 29, 2014

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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