apnoeic oxygenation techniques
Conditions
Interventions
low-flow nasal oxygenation2:Nasal oxygenation, oxygen flow 2L/min
low-flow nasal oxygenation5:Nasal oxygenation, oxygen flow 5L/min
low-flow nasal oxygenation10:Nasal oxygenation, oxygen flow 10L/min
the nasopharyngeal airway group:Modified nasopharynx airway oxygenation, oxygen flow 10L/min
Sponsors
Department of anaesthesia, Obstetrics and Gynecology Hospital of Fudan University
Eligibility
Sex/Gender
Female
Inclusion criteria
Inclusion criteria: Female patients aged 18-60 years with American Society of Anesthesiologists (ASA) grades I-II undergoing elective laparoscopic gynaecological surgery under general anaesthesia were enrolled in this study.
Exclusion criteria
Exclusion criteria: The exclusion criteria included the following: anatomical abnormalities or a surgical history of the face, nose, or upper airway; nasal obstruction or difficulty placing the nasopharyngeal airway; difficult airway; a New York Heart Association (NYHA) cardiac function classification > 2; smoking; chronic respiratory diseases; uncontrolled hypertension; elevated intracranial pressure; SpO2 below 97% after pure oxygen inhalation for 3 minutes; incorporation with facemask ventilation; a body mass index (BMI) >= 30 kg/m^2; pregnancy; severe gastroesophageal reflux; neuromuscular disease; and refusal to participate in the study.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| tracheal oxygen fraction, FtO2;periglottic oxygen fraction, FgO2;the safe apnoea time; | — |
Countries
China
Contacts
Public ContactWeilian Geng
Department of anaesthesia, Obstetrics and Gynecology Hospital of Fudan University
Outcome results
None listed