Instructions for use – Infinity Acute Care System – Monitoring Applications VG6.n 329
Cardiac output (C.O.)
Cardiac output measuring modes
Two cardiac output measuring modes are
available: automatic and manual. If unstable blood
temperatures, artifact, or other conditions are
preventing automatic measurements, switch to
manual mode.
If the attention tone is not deactivated (see
page 445), a tone sounds when the cardiac output
value has been computed.
Automatic measurements
In auto mode, the message Inject when ready
appears in the Procedures... > C.O. page of the
Cockpit when the baseline blood temperature is
stable. If the blood temperature becomes unstable,
the message Inject when ready is replaced by the
message Poor baseline. To select the automatic
cardiac output mode, see page 334.
Arrow computation constants
Catheter
size
Injectate
volume
Tinj = -5°C to 23.9°C
(23 °F to 75 °F
)
Tinj >=24 °C (75.2 °F)
7.5F 10 cc 0.532 0.586
7.5F 5 cc 0.249 0.265
7.5F 3 cc 0.131 0.155
7F 10 cc 0.541 0.601
7F 5 cc 0.250 0.273
7F 3 cc 0.134 0.156
5F 5 cc 0.267 0.303
5F 3 cc 0.157 0.192