User and Technical Manual: HotDog Temperature Management Controller
Page 8
TEMPERATURE MONITORING AND AUTO MODE GUIDE
1.
This Controller can monitor patient core temperature when receiving a signal from a YSI 400-
compatible temperature probe. This requires at least an A411-IN cable to make the connection. The
Controller can also output the patient temperature to a third-party monitor (e.g. to port to the EMR). To
output patient temperature to a third-party patient monitor, attach an industry-standard “headphone”
jack (3.5mm mono) to the T
out
port.
2.
If utilizing an invasive temperature probe, esophageal or rectal probes are recommended for accuracy.
Ensure the probe is correctly positioned in the patient, (or in the case of noninvasive probes, on the
patient) and plug the probe into A411-IN cable, which must then be plugged into T
probe
port. Note: If
consistent with the temperature probe’s IFU, placement of an esophageal temperature probe should be
past the initial “pressure” of the esophagus flattening by the heart. Pushing just past this point should
yield accurate core temperature behind the heart.
3.
While the Controller is awaiting a valid patient temperature from the probe, an hourglass displays next
to the “T”. After a valid patient temperature has been established (31°-43°C & <1°C change / minute),
the patient temperature will be displayed.
4.
AUTO mode is available if Warming Devices are placed on the patient and plugged in and a valid
human temperature is measured. AUTO mode automatically adjusts the Warming Device temperature
settings based on a user-selectable “Normothermia Zone” in increments described in Table 2. The
upper and lower limits of the Normothermia Zone are selectable in the
Menu - Settings - Temperature
Graph.
The zone must extend 1
°
C or greater.
5.
Note: While in AUTO mode, the clinician must still follow all indications and contraindications for
use. For example, AUTO mode does not know whether a patient is aortic cross-clamped or if ischemic
tissue is present: AUTO mode should never be used in these instances. The clinician must always be
present during use. The clinician must ensure continual patient temperature monitoring and should not
use AUTO mode on patients who are mobile (e.g. ICU patients who could dislodge their temperature
probe). AUTO mode should not be used when temperature goals are other than simply rewarming (e.g.
in certain cardiac surgery with forced cooling, followed by rewarming). Manual operation is
recommended in these cases.
Table 2: AUTO mode -- Example
Normothermia Zone
(User Selectable)
Example
Patient
Temperature
Devices:
All High
Devices:
All Medium
Devices:
All Low
Devices:
All Off
>=Upper Limit Setting
38.0
°
C
X
67% of Upper Limit
37.3
°
C
X
33% of Upper Limit
36.7
°
C
X
<Lower Limit Setting
36.0
°
C
X
