Blood monitoring system

A device for periodically monitoring at least one predetermined parameter of blood from a patient, comprising:

• access device for gaining access to said blood with a catheter;
• a pump to withdraw blood from the patient in a predetermined time schedule;
• a dispenser to dispense a small amount of blood and provide a blood sample;
• at least one sensor in contact with said blood sample;
• a waste container in fluid contact with said at least one sensor;
• a controlled volume pump for transporting fluid through the system;
• and
• a signal processor to measure a signal produced by the at least one sensor upon contact with the blood sample where the signal is indicative of said at least one predetermined parameter.

A device for periodically monitoring at least one predetermined parameter of blood from a patient, comprising:

• access device for gaining access to said blood with a catheter;
• a pump to withdraw blood from the patient in a predetermined time schedule;
• a dispenser to dispense a small amount of blood and provide a blood sample;
• at least one sensor in contact with said blood sample;
• a single use tube in fluid contact with said at least one sensor to capture waste;
• a controlled volume pump for transporting fluid through the system;
• and
• a signal processor to measure a signal produced by the at least one sensor upon contact with the blood sample where the signal is indicative of said at least one predetermined parameter.