Adult patients undergoing elective surgery over 6 hours under general anesthesia
Conditions
Interventions
None listed
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: The patients scheduled for elective surgery in the supine position
Exclusion criteria
Exclusion criteria: Patients with forced expiratory volume in one second < 70% Patients undergoing one lung ventilation Patients undergoing cardiopulmonary bypass Patients with abnormal pulmonary blood flow by congenital heart disease Patients with less than 50% of ejection fraction Patients whose invasive blood pressure monitoring can not measured Patients with difficult airway
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The correlation coefficient for the estimated arterial partial pressure of carbon dioxide assessed by volumetric capnography and arterial partial pressure of carbon dioxide measured by arterial blood gas. | — |
Secondary
| Measure | Time frame |
|---|---|
| dead space to tidal volume ratio | — |
Countries
Japan
Contacts
National Hospital Organization(NHO) Nagasaki Medical Center Department of Anesthesiology