Which of the following is one of the Hs in the Hs and Ts approach?

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

Answer: (B)

In ACLS, reversible causes of cardiac arrest are grouped as Hs and Ts to guide rapid assessment and management. Hypothermia is one of the Hs because severe cold slows cellular metabolism and cardiac conduction, which can lead to arrest; treating with active rewarming and supportive care can restore rhythm and improve outcome. The other options aren’t part of the standard Hs list: hyperglycemia isn’t typically included in the Hs (hypoglycemia sometimes is noted in some curricula), and hypertension or hypotension aren’t among the Hs. So hypothermia is the correct choice.