Abstract P97: Femoral Artery Temperature for Monitoring Core Temperature During Mild Hypothermia in Patients Resuscitated From Cardiac Arrest
Purpose of the study: Mild hypothermia (32–34°) after cardiac arrest improves neurologic outcome. The temperature measured in the pulmonary artery (Tpa) is considered to best reflect core temperature, but the routine use in cardiac arrest patients is a matter of debate. Recently, a femoral arterial catheter with the capability of temperature measurement (Tfem) was developed, which might ease monitoring the core temperature. The aim of the study was to investigate, if Tfem reflects Tpa during mild hypothermia in patients resuscitated from cardiac arrest.
Methods: Ten patients after cardiac arrest were treated with mild hypothermia for 24 hours, followed by rewarming. Tpa was measured with pulmonary artery catheter and Tfem was measured with a PULSIOCATH® arterial thermodilution catheter. Temperatures were recorded continuously. Data are presented as mean±Standard Deviation (SD).
Results: Mean differences of Tfem-Tpa were 0.04 (±0.09). To asses the agreement of Tfem and Tpa a Bland Altman plot was used. Fig.⇓: Bland-Altmann plot of 10 patients during mild hypothermia. Femoral temperature (Tfem) plotted against pulmonary artery temperature (Tpa)
Conclusions: The temperature measured in the femoral artery reflects accurately pulmonary artery temperature. This temperature site is easily and fast accessible, and might be used for monitoring core temperature during mild hypothermia, without the need for additional temperature probes.