IfU TECOTHERM NEO TN300 EN - 01.doc
Page 18 of 76
Ref No. TN300 EN-01
Treatment section I (optional)
Thermal preparation of the mattress
Prior to start hypothermia treatment you may prepare the mattress thermally. Following
treatment procedure will be performed by the system independently on this section.
Whether such preparation is appropriate depends on your information state on the
neonate you have to treat. A mattress precooled to 18 – 22°C may shorten the cooling-
down treatment section II.
Treatment section II
Rapid Cooling- Down Phase
TECOTHERM NEO is operating to cool down as fast as possible. The system is
operating with maximum cooling power. Body heat from the patient/ neonate is
eytracted by the cooling mattress and transferred to the circulating fluid. The central
device cooling unit extracts the heat and cools the fluid on demand.
When rectally measured BCT is reaching the target temperature 33,5°C the system will
reduce the cooling power automatically. Control board microcomputer determined a
sufficiently small deviation of measured and set temperature to start power reduction.
Control system approaches set temperature without remarkably overshooting/
undershooting.
Treatment section III
Cooling Phase
Reaching the set temperature 33,5°C the system continues treatment to hold BCT of
the patient constant. Treatment time is preselected by the operator (default 72 h). The
Rectal (BCT) temperature is pre-selected (default 33,5 °C). The control board
permanently compares measured rectal temperature with set BCT 33,5°C. The central
cooling unit is permanently adjusting the temperature of the circulating fluid to hold
BCT at 33,5°C.
If during treatment section III BCT of the patient is increasing/ decreasing caused by
disturbances the difference between measured and set rectal temperature increases.
The system initially will respond with more cooling power or increasing warming.
If deviation exceeds 0,5 °C in any direction, for some longer time the internal
monitoring system will detect this discrepancy. TECOTHERM NEO starts alarming.
Treatment section IV
Re- Warming Phase
After cooling phase III the system automatically starts the re- warming phase. Re-warm
target Rectal (BCT) Temperature and time to achieve this are pre-selected (Default
BCT 37°C and 7 hours). The TECOTHERM NEO system will linearly increase the BCT
until selected target temperature 37°C is reached.
System then stops re- warming. BCT remains at the selected value.
In case of disturbances the system is responding as described in section III.
