Relationship Between Optimal Laryngeal Mask Airway Cuff Volume and Physical Examination of Head and Neck (RCVPE)

Korea University

Status: Completed

Conditions: Anesthesia

Treatments: Device: Classic laryngeal mask airway

Study type: Interventional

Funder types: Other

Identifiers

NCT02502422

LMA60

Details and patient eligibility

About

Overinflation of laryngeal mask airway cuff increase side effect like hoarseness, vocal cord paralysis, sorethroat. The investigators will study correlation between laryngeal mask airway cuff volume and pressure and physical examination of head and neck.

Full description

Overinflation of laryngeal mask airway cuff can induce side effects like hoarseness, vocal cord paralysis, sorethroat. Some study revealed that 60cmH2O of intracuff pressure is maximum pressure which is not increase side effect.

The manufacturer recommends that the cuff is inflated with the minimum volume of air required to provide an effective seal(max volume - size 3, 20 ml; size 4, 30 ml; size 5, 40).

The investigators will measure anatomical structure (neck circumference, neck length, thyroid-mental distance, etc.) which can influence cuff volume and pressure and find correlation between cuff volume and physical figure measured.

Enrollment: 170 patients

Sex: All

Ages: 19 to 65 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Adult (age 19-65)
• American Society of Anesthesiology Classification I-III

Exclusion criteria

• cardiovascular disease, cerebrovascular disease, pulmonary disease
• patient who have operation history for airway
• patient who expected difficult intubation
• patient who have risk of aspiration

Trial design

Primary purpose: Screening

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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170 participants in 1 patient group

Classic laryngeal mask airway

Other group

Description:

single arm

Treatment:

Device: Classic laryngeal mask airway