Core Rewarming

A technique used for patients with moderate/severe hypothermia
Without circulatory collapse Warm airways with heated, humidified air by O2 mask or endotracheal tube, eliminating respiratory heat loss, and increase body temperature by 1º–2ºC/hour; expand volume with warmed (40º–42ºC) IV solutions; other methods include peritoneal lavage with heated dialysate or closed pleural irrigation with warm saline
With hemodynamic instability Cardiopulmonary bypass; advantages include ability to maintain perfusion and oxygenation while rapid rewarming occurs and myocardial function recovers