Laparoscopic Nephrectomy
Conditions
Interventions
GMA Group:GMA-Tulip Laryngeal Mask Airway
LAM Group:LAM Supreme Laryngeal Mask Airway
Sponsors
The Second Hospital of Lanzhou University
Eligibility
Sex/Gender
All
Age
18 Years to 75 Years
Inclusion criteria
Inclusion criteria: 1. Aged 18–75 years; 2. Scheduled to undergo elective laparoscopic nephrectomy under general anesthesia (anticipated operative duration: 30–240 minutes); 3. American Society of Anesthesiologists (ASA) Physical Status Classification I–III; 4. Body mass index (BMI) 18.5–30 kg/m²; 5. Patient has provided informed consent and signed a written consent form.
Exclusion criteria
Exclusion criteria: 1. Presence of predictors for difficult airway (Modified Mallampati classification III–IV, inter-incisor distance <2.5 cm, thyromental distance <6 cm, severe limitation in neck mobility). 2. History of oropharyngeal surgery or anatomical abnormalities. 3. Gastroesophageal reflux disease, high risk of aspiration, or patients requiring rapid sequence induction. 4. Pre-existing respiratory conditions such as respiratory tract infection, chronic cough or hoarseness, chronic bronchitis, or asthma. 5. Current participation in other clinical studies.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Oropharyngeal Leak Pressure (OPLP); | — |
Secondary
| Measure | Time frame |
|---|---|
| Number of laryngeal mask insertion attempts;total duration of the insertion procedure;operator's subjective assessment (Good, Fair, Poor);Whether air leakage occurs at an airway pressure of 20 cmH2O;Whether air leakage occurs at an airway pressure of 25 cm H2O;Ventilation Quality Score During Mechanical Ventilation;Peak Airway Pressure and Plateau Pressure;Anatomical Alignment Classification: Includes 4-category grading and GMA grading;Oropharyngeal Leak Pressure (OPLP) when the head is turned to one side at 30° and 45°;Whether air leakage occurs;whether abnormal elevation of airway pressure occurs;whether hypoxemia occurs;whether position adjustment is performed and the number of adjustments;whether conversion to endotracheal intubation is required;Whether normal ventilation can be achieved after resuming spontaneous breathing and suctioning;whether blood is present upon removal of the laryngeal mask;whether hoarseness occurs;whether sore throat occurs;whether gastric fluid is present in the oropharynx;Whether hoarseness occurs within 24 hours postoperatively;whether reflux aspiration occurs within 24 hours postoperatively;whether pneumonia develops within 24 hours postoperatively;whether hypoxemia or atelectasis occurs within 24 hours postoperatively; | — |
Countries
China
Contacts
Public ContactYingbin Wang
The Second Hospital of Lanzhou University
Outcome results
None listed