The purpose of this study is to determine that the measurements of rectal and bladder temperature are correctly consistent with core temperature by using the pulmonary artery catheter during therapeutic hypothermia; rapid cooling, maintenance, and slow rewarming phase.

The guidelines of therapeutic hypothermia(TH)are rapid cooling, from normothermia to mild hypothermia(32~34 degree), maintenance, and slow rewarming phase. If core temperature maintained below 32 degree during TH, som complications will be developed, such as arrythmia, hypotension, cold diuresis, coagulopathy, and so on. Therefore correct measurement of core temperature during TH is very important process for successful post cardiac arrest care. we will know that rectal or bladder temperature are really reflect the core temperature during TH for post cardiac arrest care, especially rapid cooling phase, maintenance phase, and slow rewarming phase, respectively.

Inclusion Criteria:

• Out of cardiac arrest patient who is 18 years old.
• Mean arterial pressure must be over 65 mmHg after return of spontaneous circulation.
• Family consent to this study.

Exclusion Criteria:

• In hospital arrest.
• Arrest due to trauma
• Arrest due to intracranial hemorrhage.
• Below 30 degree at initial core temperature.
• Pregnancy.
• Family do not agree with our study.
• Active bleeding patient.

Post cardiac arrest care with therapeutic hypothermia