Body Temperature Changes
Conditions
Keywords
body core temperature
Brief summary
The body core temperature drops during general anesthesia. To maintain homeostasis, patients require warming measures. Different methods to measure body core temperature exist, which are either highly accurate but invasive, or non-invasive but non-accurate. A new monitoring device, Tcore(TM), enables a non-invasive but accurate core temperature assessment. This study is performed to quantify accuracy and bias of the Tcore system in comparison with the blood temperature, which is the gold standard of core temperature measurement.
Interventions
DEVICETcore
Monitoring system to measure body temperature based on heat-flux technology
Sponsors
University Hospital, Bonn
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Patients with invasive femoral artery temperature monitoring
Exclusion criteria
* Pregnancy
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Bias of heat-flux temperature monitoring [%] | from insertion of thermometers to end of surgery | Over the time course of surgery, the body core temperature is actually measured in the bloodstream (Tbl) and estimated by the heat-flux thermometer (Thf). The bias or median prediction error (MPE) is calculated as median of PE, which is (Tbl-Thf)/Tbl. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Inaccuracy of heat-flux temperature monitoring [%] | from insertion of thermometers to end of surgery | Over the time course of surgery, the body core temperature is actually measured in the bloodstream (Tbl) and estimated by the heat-flux thermometer (Thf). The inaccuracy or median absolute prediction error (MAPE) is calculated as median of abs(PE), which is (Tbl-Thf)/Tbl. |
Countries
Germany
Outcome results
None listed