A prospective, observational study to compare pre- with intra-anesthetic airway resistance in patients scheduled for surgery under general anesthesia, using the information on flow-volume curves obtained prior to and during general anesthesia.
Not Applicable
- Conditions
- ot applicable (This is a prospective, observational study involving patients scheduled for surgery under general anesthesia.)
- Registration Number
- JPRN-UMIN000023180
- Lead Sponsor
- Department of Anesthesiology, The University of Tokyo Hospital
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Complete: follow-up continuing
- Sex
- All
- Target Recruitment
- 500
Inclusion Criteria
Not provided
Exclusion Criteria
Patients scheduled for cardiac and respiratory surgery. Patients undergoing general anesthesia using a double lumen endotracheal tube, a RAE endotracheal tube and a supraglottic airway devise.
Study & Design
- Study Type
- Observational
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Pre- and intra-anesthetic airway resistance calculated based on the slopes of flow-volume curves obtained prior to and during general anesthesia. Static lung compliance calculated as the ratio between VT and plateau pressure minus PEEP.
- Secondary Outcome Measures
Name Time Method Endotracheal tube resistance measured based on the relationship between pressure drop and flow within a certain range of flow rates.