None listed
Conditions
Interventions
HFNC group:High flow nasal cannula (HFNC) preoxygenation
Control group:Mask preoxygenation
Sponsors
Chongqing Traditional Chinese Medicine Hospital
Eligibility
Sex/Gender
All
Age
18 Years to No maximum
Inclusion criteria
Inclusion criteria: 1. Patients who need preoxygenation for the operation under general anesthesia; 2. ASA grading 1-3; 3. Aged >= 18 years; 4. Patients volunteered to participate in this study.
Exclusion criteria
Exclusion criteria: 1. Patients with known or predicted difficult airway and severe obstructive airway; 2. Patients with severe respiratory and circulatory diseases or uncorrected hemodynamic instability and decompensated shock; 3. Pregnant patients with high risk of reflux aspiration, body mass index (BMI)>40/m^2; 4. Patients with severe lesions and wounds in the chest and spine, surgical incisions and skin-related lesions, or severe chest deformities that cannot fix the EIT bandage; 5. Patients with implants of intrathoracic devices, such as pacemakers, defibrillators or any other surgical implant; 6. Patients with congenital heart disease and congenital diaphragmatic hernia.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Global inhomogeneity index; | — |
Secondary
| Measure | Time frame |
|---|---|
| End-expiratory lung impedance, ?EELI;Arterial partial pressure of oxygen;Mean arterial pressure, MAP;Heart rate, HR;Respiratory frequency;Arterial partial pressure of carbon dioxide, PaCO2;Arterial oxygen saturation, SaO2;Exhaled oxygen concentration, EtO2;Safe apnea time;Comfort evaluation;Oxygen saturation; | — |
Countries
China
Contacts
Public ContactXie Mian
Chongqing Traditional Chinese Medicine Hospital
Outcome results
None listed