A catheter and method are provided for modifying a temperature of a patient.
The
catheter includes a heat transfer element ("HTE") having surface irregularities
shaped to create turbulence in a surrounding fluid. The catheter also includes
a supply catheter to deliver a working fluid to an interior of the heat transfer
element and a return catheter to return a working fluid from the HTE. A guidewire
lumen is provided to receive a guidewire. The guidewire may have a temperature-monitoring
device disposed at its distal tip from which feedback may be provided to control
the temperature of a source of the working fluid.
