Which sign is part of Beck triad?

• A. Pulsus paradoxus
• B. Jugular venous distention
• C. Hypertension
• D. Tachycardia

Answer: (B)

Beck's triad describes the classic signs of cardiac tamponade: low blood pressure from reduced cardiac output, muffled heart sounds, and distended jugular veins from impaired venous return. The sign that fits this triad is distended neck veins, because the elevated venous pressure is a hallmark feature seen with tamponade. The other options don’t define the triad: pulsus paradoxus can occur with tamponade but isn’t part of the triad itself; hypertension is the opposite of the hypotension seen in tamponade; tachycardia may occur as a compensatory response but isn’t one of the triad’s defining signs.