Correlation Between External Jugular Venous and Central Venous Blood Oxygen Saturation in Patient Under General Anesthesia
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government.
Know the risks and potential benefits of clinical studies and talk to your health care provider before participating.
Read our disclaimer for details.
After installation of central venous catheter in patients under general anesthesia, paired sample of central venous blood and right external jugular venous blood will be collected and send to central laboratory for blood gas analysis. Correlation between central venous blood and right external jugular venous blood oxygen saturation will be determined as primary outcome.
Condition or disease
Central Venous Oxygen Saturation
All patients undergoing surgery under general anesthesia and superior vena cava central venous catheter installation anticipated are eligible. Immediate after central venous installation, 1 ml of venous blood sample is taken from right external jugular vein and central venous catheter and send for blood gas analysis. Correlation between central venous blood and right external jugular venous blood oxygen saturation and partial pressure of carbon dioxide will be determined and prediction equation for central venous saturation is created.
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Layout table for eligibility information
Ages Eligible for Study:
18 Years to 80 Years (Adult, Older Adult)
Sexes Eligible for Study:
Accepts Healthy Volunteers:
Adult surgical patients undergoing surgery under general anesthesia in institutional operating theaters with superior vena cava central venous catheter installation anticipated.
Surgical patients undergoing surgery under general anesthesia
Internal jugular central venous catheter anticipated
Not receiving inotropic or vasopressor drug
Systolic blood pressure not less than 90 mmHg
Anticipated right external jugular venous sampling time less than 5 minutes
No jugular central venous catheter installation or other route selected
Duration of paired sample collection more than 10 minutes