Mindray BeneView T8, Operation Manual

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Monitoring Cardiac Output
12-2
12.2 Understanding the C.O. Display
The C.O. measurement is displayed on the monitor as numeric C.O. and BT in the C.O.
parameter window as shown below. To enter the [
C.O. Setup
] menu, select the C.O.
parameter window.
1. Temperature unit 2. Blood temperature 3. Cardiac output
12.3 Influencing Factors
Some of the factors which affect cardiac output are:
„ temperature of injectate solution,
„ volume of injectate solution,
„ patient’s baseline blood temperature,
„ patient’s inspiratory/expiratory cycle,
„ placement of catheter with relation to proximity of lung field,
„ the catheter itself,
„ the patient rhythm and hemodynamic status, and
„
any other rapid IV solutions which are infused while the C.O. measurement is being
performed.
Followings are some technique suggestions to obtain accurate C.O.:
„ Injectate solution must be cooler than the patient’s blood.
„ Inject solution rapidly and smoothly.
„ Inject at end expiration.
„ Wait 1 minute between injections to allow baseline to stabilized.
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