the criteria for laryngeal mask airway selection
Conditions
Interventions
Weight group(W group):size 4 for those weighting between 50 to 70kg, size 5 for those weighting =70kg
Gnathion-cricoid cartilage distance group(G-C group):size 4 for those G-C distance<11.20cm, size 5 those G-C distance=11.20cm
Sponsors
Zhongshan Ophthalmic Center, Sun Yat-sun University
Eligibility
Sex/Gender
All
Age
18 Years to 60 Years
Inclusion criteria
Inclusion criteria: 1. Patients who will undertake selective ophthalmic surgery; 2. Meet the standard of American Society of Anesthesiologists'(ASA) physical status 1 to 2; 3. Aged 18 to 60 years; 4. Those weighing=50kg and having body mass index (BMI)=30kg/m2; 5. Those with a prediction of less than 2 hour operation time.
Exclusion criteria
Exclusion criteria: 1. having a high risk of regurgitation or aspiration (hiatal hernia, Zenker diverticulum, history of gastro-esophageal reflux disease [GERD],etc); 2. those with a potentially difficult airway (a history of difficulty airway, mouth opening <2 cm, Mallampati class 4, limited neck extension or cervical spine pathology); 3. respiratory tract pathology; 4. with symptomatic acute upper respiratory infection(eg, preoperative sore throat, cough and expectoration,etc); 5. suffered from cardiopulmonary dysfunctions, severe hepatic and renal dysfunctions or conagulation disorder; 6. with loosening or absent of teeth; 7. long-term taking hormore drugs; 8. exiting any other factors that would affect the results of the research.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Oropharyngeal leak pressure; | — |
Secondary
| Measure | Time frame |
|---|---|
| ????????(%);insertion attempts;tidal volume;Time required for insertion;LMA adjustment required time(s) during the surgery;Ease of airway device placement;Fiberoptic score;Adverse event of laryngopharyngeal after the surgery; | — |
Countries
China
Contacts
Public ContactChen Hongbin
Zhongshan Ophthalmic Center, Sun Yat-sun University
Outcome results
None listed