[Therapeutic hypothermia: effects beyond neuroprotection]

Area of Science:

• Cardiology
• Critical Care Medicine
• Neurology

Background:

• Therapeutic hypothermia (TH) has advanced cardiac arrest treatment over the last decade.
• TH is a safe intervention when applied correctly, considering physiological effects and potential pitfalls.
• Recent evidence supports TH's safety and efficacy in patients with cardiogenic shock.

Purpose of the Study:

• To review the advances and applications of therapeutic hypothermia in cardiac arrest.
• To evaluate the safety and effectiveness of TH, including comparisons with near-normal temperature cooling.
• To explore the potential expanded role of TH in clinical practice, particularly for cardiogenic shock.

Main Methods:

• Literature review of studies on therapeutic hypothermia in cardiac arrest and cardiogenic shock.
• Analysis of safety and efficacy data comparing different cooling temperatures (32-34°C vs. 36°C).
• Examination of pathophysiological mechanisms underlying TH's effects in hypoxic conditions.

Main Results:

• TH (32-34°C) demonstrates comparable safety and effectiveness to cooling at 36°C.
• The primary benefit of TH may stem from effective fever suppression.
• Cardiogenic shock is no longer a contraindication for TH, with proven safety and effectiveness.

Conclusions:

• TH is a safe and effective treatment for cardiac arrest, with benefits potentially linked to fever suppression.
• The anti-ischaemic and positive inotropic effects of TH suggest its utility in managing cardiogenic shock.
• TH may have broader clinical applications beyond current practice due to its multifaceted effects in hypoxic states.