Measurement of Cardiac Output and Blood Volumes

Measurement of Cardiac Output and Blood Volumes

Cardiac Output (amount of blood pumped by the heart in one minute) will be measured using the new COstatus(R) system and these values will be compared with cardiac output values measured by other methods such as thermodilution. Blood volumes measured by the COstatus(R) system will also be recorded.

Inclusion Criteria:

• Adult patients (older than 18 years of age)
• Should have both arterial and central venous catheters already in place

Exclusion Criteria:

• Patients who do not have either the arterial or central venous catheters.