Double-lumen tube positioning
Conditions
Interventions
Group C:After excluding the influence of blood pressure, the tube position is slowly adjusted according to the ETCO2 waveform and value (the pre-test indicates that the position may be too deep when t
Group T:The position of the DLT was determined by auscultation, and after insertion of the double-lumen tube, the tracheal cuff was inflated, the position of the double-lumen tube was adjusted by ausc
Sponsors
Sichuan Academy of Medical Sciences - Sichuan Provincial People's Hospital
Eligibility
Sex/Gender
All
Age
18 Years to 80 Years
Inclusion criteria
Inclusion criteria: 1)Surgical patients to be operated under elective double-lumen endotracheal intubation anesthesia with catheter type left 35#/left 37#; 2)18 years = age = 80 years; 3)ASA classification: grade I~III; 4)Height in 155 ~178 cm; 5)Agreed to participate in this study and signed the informed consent form;
Exclusion criteria
Exclusion criteria: 1)Patients requiring a right-sided double-lumen endotracheal tube or with a required DLT size of 32#/39#/41#; 2)Patients with difficult airway assessed preoperatively (Mallampati score III-IV, Cormack-Lehane classification 3-4, mouth opening < 3 cm, difficulty in neck tilting back, limited TMJ movement, etc.); 3)patients with history of pulmonary surgery, patients with tracheal stenosis, presence of airway leaks, airway tumors, asthma, pleural effusion, myasthenia gravis, severe hepatic and renal insufficiency, and severe cardiopulmonary insufficiency; 4)Patients who have had unstable angina and myocardial infarction within 3 months; the presence of untreated arrhythmias requiring treatment or treatment that has not met expectations; patients with Adams-Stokes Syndrome, Pre-excitation Syndrome, and severe cardiac conduction block (including sinoatrial, atrioventricular, and intraventricular conduction block); 5)Diagnosis of infectious shock and multiple organ failure within 14 days; 6)Patients who have undergone invasive tracheal maneuvers such as tracheotomy or extended postoperative ventilation support; 7) Patients with a history of gastroesophageal reflux who are expected to undergo surgery for more than 6 hours; 8) Patients with previous hoarseness, sore throat or cervical spine complications; 9)Patients who have participated in other clinical trials within 3 months; 10)Patients with disorders of consciousness or other psychiatric disorders; 11)Refusal to sign the informed consent form;
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Intubation success rate; Intubation time; | — |
Secondary
| Measure | Time frame |
|---|---|
| Catheter adjustment time;Degree of lung collapse;Blood pressure;End-expiratory carbon dioxide;Airway pressure;Tidal volume;Oxygen saturation;Airway injury;hoarseness;Sore throat;Cough;Laryngeal spasm;Larynx stridor;Dental impairment;Blood-stained sputum; | — |
Countries
China
Contacts
Public ContactSi Zeng
Sichuan Academy of Medical Sciences - Sichuan Provincial People's Hospital
Outcome results
None listed