WarmTouch WT-5900, Operator'S Manual

Introduction

10 

Operator’s Manual

In creating this warm customized pocket of air around the hypothermic patient, 
it is important to note that stagnant air, even if it is warm, does not work as an 
effective heat transfer medium. Stagnant air acts as an insulator, preventing the 
boundary layer of molecules next to the skin surface from transferring heat.

Forced air warming causes warmed air molecules to flow over cooler skin 
surface. It is this active flow of warmed molecules that acts as a heat transfer 
medium. With the warming system, air is warmed and delivered into a 
lightweight blanket (CareQuilt™ or CareDrape™ blanket) that rests over or under 
the patient. The CareQuilt™ and CareDrape

™

 blankets have many small 

perforations on the underside that allow air to exit the blanket and surround the 
patient.

Safety Features

The warming system is designed to give healthcare professionals more control 
over the patient’s core body temperature. There are several safety features of 
the warming system which make it safe and appropriate for such use.

Customized Warming Therapy

Clinicians select a temperature range setting at the onset of warming therapy to 
help ensure the appropriate setting is selected for every patient.

Automatic Temperature Stepdown

The warming system provides a 45-minute temperature stepdown feature. 
When in Boost Mode, blower temperature will automatically drop to the high 
temperature setting after each 45 minutes of use. The temperature may be reset 
to Boost Mode by selecting the boost temperature setting on the control panel 
to start another 45-minute cycle.

Automatic Over Temperature Shutdown

The automatic temperature controller and two back-up systems help ensure the 
temperature will not reach excessive levels. If necessary, the control system 
automatically turns off the heater element when the blower outlet temperature 
rises to between 47ºC and 50ºC, illuminates the flashing warning light, and 
sounds an audible alarm. The warming system heater will start producing heat