Laryngeal Mask
Conditions
Keywords
ultrasound, air leakage test, bronchofiberscope
Brief summary
Compare the accuracy of two methods of ultrasound and air leakage test in positioning laryngeal mask. Validate the relationship between ultrasound scores, air leak levels, and bronchoscopic classification in positioning laryngeal mask
Interventions
DEVICEultrasound
Anesthesiologist would scan three planes of the neck to position the LMA
DIAGNOSTIC_TESTair leakage test
Anesthesiologist would use air leakage test to position the LMA
Sponsors
Shenzhen Second People's Hospital
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SCREENING
Masking
DOUBLE (Subject, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
17 Years to 65 Years
Healthy volunteers
No
Inclusion criteria
* patients selected for this study must meet all of the following criterion: 1. Age is between 17 to 65 years old; 2. ASA (Amecican Society of Anesthesiology ) scores I-II; 3. Actual weight is between 30 to 100 kilogram; 4. Patients undergo selective supine operations under general anesthesia (laryngeal mask); 5. Patients agree to participate in our study and sign Informed Consent Form
Exclusion criteria
* Patients cannot participate in this study if they have any of the following conditions: 1. Airway stenosis, history of airway masses etc, whicn may cause obstruction to ventilation; 2. Swelling of the neck caused by huge mass in the neck and history of neck surgery etc, which doesn't contribute to ultrasound observation; 3. Stomach fullness, intestinal obstruction, gastroesophageal reflux disease etc, which may cause reflux aspiration.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Ultrasound scoring system | during procedure (after laryngeal mask's placement) | Anesthesiologist who are familiar with ultrasound would scan three planes of neck |
| Air leakage test grading system | during procedure (after laryngeal mask's placement) | Anesthesiologist would auscultate the degree of leakage |
| Fiberoptic scoring system | procedure (after ultrasound examination or leakage test) | Anesthesiologist would confirm the position of LMA by fiberscope |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Complications related to LMA (laryngeal mask airway ) | 24 hours after surgery | such as reflection of tussis, sore throat, hoarseness, bleeding and so on |
Countries
China
Contacts
Primary ContactLi Xiong, master
Outcome results
None listed