In the Hs & Ts framework for cardiac arrest, thrombus refers to a blockage in which vessels?

• A. Aorta
• B. Coronary or Pulmonary arteries
• C. Cerebral arteries
• D. Jugular veins

Answer: (B)

In this context, thrombus means a clot that blocks blood flow in vessels critical to heart and lung function. A clot can obstruct the coronary arteries, causing a heart attack, or obstruct the pulmonary arteries, causing a pulmonary embolism. Both scenarios can lead to cardiac arrest, so the vessels involved are the coronary arteries or the pulmonary arteries. The other vessels listed are not the typical focus of thrombosis in the Hs & Ts framework for cardiac arrest.