Cardiac output measurement

Press Cardiac Output Mode

· position patient supine and flat

· check monitor programmed with correct: height, weight, Co-efficient and syringe size

· check that the thermistor cable is connected

· attach the injectate system to the proximal lumen and ensure that an adequate volume of 5% dextrose is available for Cardiac output measurements

v enter the following values into monitor

v Mean P.A.P. and A.P.

v P.C.W.P.

v C.V.P.

· Perform measurement

· draw up 10ml of 5% dextrose

· activate CO start button on peak inspiration and inject solution within 2 seconds

· inspect CO curve, looking for smooth rapid upstroke to peak and gradual down slope to baseline

· repeat CO procedure obtaining 3 measurements that are within 10% of the median valve

· Press HAEMO DATA STORE key to store C. O. values

·

ETC

Enter button

·

Haemolist

Select to retrieve data and document on B4 flow chart

Tracing shows cardiac rhythm (top), intraaortic counterpulsation waveform (middle) and PAP and PCWP trace (bottom)

Cardiac indices

Clinical manifestation of cardiac indices