Which of the following is correctly listed as a H in resuscitation guidelines?

• A. Hyperglycemia
• B. Hypothermia
• C. Hyperkalemia
• D. Hypotension

Answer: (B)

In resuscitation guidelines, the Hs represent reversible causes that should be addressed to improve outcomes. The Hs typically include Hypoxia, Hypovolemia, Hydrogen ion (acidosis), Hyperkalemia or Hypokalemia, and Hypothermia. Of the options given, hypothermia fits this group most clearly. Low body temperature can slow metabolism and disturb cardiac conduction, contributing to cardiac arrest; recognizing it signals the need for active warming and rewarming as part of resuscitation.

Hyperglycemia isn’t listed among the Hs, hypotension isn’t a standard H, and while electrolyte disturbances like potassium issues can be considered under electrolyte problems, the choice that aligns with the defined H set is hypothermia.