Here are some of my references many of which simply discuss the effectiveness of TH as a whole.
These include some clinical trials.
Cronberg, T., Lilja, G., Rundgren, M., Friberg, H., & Widner, H. (2009). Long-term neurological outcome after cardiac arrest and therapeutic hypothermia Resuscitation, doi:10.1016/j.resuscitation.2009.06.021
Fries, M., Stoppe, C., Brucken, D., Rossaint, R., & Kuhlen, R. (2009). Influence of mild therapeutic hypothermia on the inflammatory response after successful resuscitation from cardiac arrest Journal of Critical Care, 24(3), 453-457. doi:10.1016/j.jcrc.2008.10.012
Inderbitzen, B., Yon, S., Lasheras, J., Dobak, J., Perl, J., & Steinberg, G. K. (2002). Safety and performance of a novel intravascular catheter for induction and reversal of hypothermia in a porcine model Neurosurgery, 50(2), 364-370.
Koran, Z. (2008). Therapeutic hypothermia in the postresuscitation patient: The development and implementation of an evidence-based protocol for the emergency department. Advanced Emergency Nursing Journal, 30(4), 319-330.
Kozik, T. M. (2007). Induced hypothermia for patients with cardiac arrest. Critical Care Nurse, 27(5), 36-43.
NEJM -- neurologic prognosis after cardiac arrest Retrieved 10/14/2009, 2009, from http://proxy.library.upenn.edu:2252/cgi/content/full/361/6/605
Sahuquillo, J., Pérez-Bárcena, J., Biestro, A., Zavala, E., Merino, M., Vilalta, A., Poca, M. A., Garnacho, A., Adalia, R., Homar, J., & LLompart-Pou, J. A. (2008). Intravascular cooling for rapid induction of moderate hypothermia in severely head-injured patients: Results of a multicenter study (IntraCool) Intensive Care Medicine, doi:10.1007/s00134-008-1357-4
Schnautz, L., Glines, E., Rowley, D., Harris, D., & Petty, M. (2005). To freeze or not to freeze. American Journal of Nursing, 105(2), 72AA-72DD.