3M Sarns TCM II - Using the System Modes

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Operation
Using the System
\Varnings: It is the operator’s responsibility to
use the SarnsTM TCM II and any attached equip-
ment according to the manufacturer’s instructions
and good medical practices.
The SarnsT'v TCM II is not completely automatic;
responsibility for monitoring patient temperatures
and rate of temperature change remains with the
operator. ,
Do not depress the alarm switch for more than 1
second or the alarm setting will be changed.
Note: Following standard practices for electronic
devices, monitor this equipment closely when it is
exposed to intense electrical noise or fluctuating line
voltage. Strong electromagnetic fields radiated from
equipment elsewhere in the operating room (particu-
larly defibrillators and electrocautery devices) or
fluctuations in AC line voltage may compromise
performance or damage the equipment.
Mode Selection
Use the Standby mode at any time to stop the pumps
and heaters; this mode allows temperature monitoring
without the selection of Cooldown, Maintain or
Rewarm modes.
Use the Cooldown mode for maximum cooling.
Use the Rewarm mode for warming to a maximum of
42°C.
Use the Maintain mode to both cool or warm to a set
water temperature and to maintain that water tempera—
ture:
- Maintain mode may be set and initiated after
starting in either Cooldown or Rewarm mode;
however, begin the Maintain mode before reaching
the desired body temperature to prevent warming
or cooling beyond the desired temperature.
. Maintain mode may be used to begin cooling or
warming; beginning in the Maintain mode avoids
the possibility of waiting too long to initiate the
Maintain mode and thus overshooting the desired
temperature.
- Maintain mode with several settings may be used
for a sequence of water temperature changes to
approximate rate control. In some cases it may be
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desirable to very slowly raise or lower the patient
temperature, By setting several Maintain tempera—
tures, each a limited number of degrees warmer or
cooler than the existing water temperature, the
change in water temperature can be slowed down
or varied considerably depending on the number of
Maintain settings and the temperature difference
between the settings. Maintain mode can not
increase the rate of temperature change
Use Gradient Rewanning to control the rate of
rewarm. Select a gradient of6° or 10" on the main
panel. Check that Probe G is measuring the venous
blood temperature. Use the Rewarm mode for a
maximum water temperature of 42°C or set a Maintain
temperature limit (on the main panel) and then use the
Maintain mode.
NOTE: If there is an error condition for Probe G,
the gradient selection will not flirtation; instead, the
unit will revert to Rewarm mode or Maintain mode
without the gradient.
For cardioplegia, use the Large Tank or Small Tank for
pressurized—water heat exchangers and the Large to
Small Tank for drop-in heat exchangers.
Additional Ice
A 50 lb. supply of ice should be sufficient for one case.
Two hours between cases should be allotted for the
compressor to partially replenish the ice supply; see
“Using the Ice Maker”.
To add ice to either tank during surgery, remove only
an equivalent amount of water from the large tank by
using the arterial water drainage line.
Note: During surgery, do not drain equipment
attached to the system; as the ports are internally
connected to a common water source, draining the
attached equipment may drain the entire system.
Keep the tank covers in place during operation to help
minimize temperature loss and keep debris out of the
water. Do not stand or sit on the unit; weight may
break the top.
Precaution: The water level in the large tank
must never rise above the maximum level as
water may damage the inside of the unit; this
water level should not drop below the minimum
level as there may be a loss of system perfor-
mance (see maximum—minimum label).