Which statement best reflects Beck's triad?

Which statement best reflects Beck's triad?

• A. Hypertension, muffled heart sounds, and JVD
• B. Hypotension, JVD, and muffled heart sounds
• C. Hypertension, JVD, and loud heart sounds
• D. Normal vital signs with clear lungs

Answer: (B)

Beck's triad reflects the physiology of acute cardiac tamponade: the heart is compressed by fluid in the pericardial space, which drops the cardiac output, raises venous pressure, and muffles heart sounds. The low blood pressure comes from reduced ventricular filling and stroke volume. Jugular venous distension happens because the back pressure from impaired filling is transmitted into the veins of the neck. Muffled heart sounds occur because the pericardial effusion dampens the transmission of sound to the chest wall. Among the choices, the combination of hypotension, jugular venous distension, and muffled heart sounds best matches this pattern. Hypertension or loud heart sounds are not typical of tamponade, and normal vital signs with clear lungs would not reflect the hemodynamic compromise seen in tamponade.

Beck's triad reflects the physiology of acute cardiac tamponade: the heart is compressed by fluid in the pericardial space, which drops the cardiac output, raises venous pressure, and muffles heart sounds. The low blood pressure comes from reduced ventricular filling and stroke volume. Jugular venous distension happens because the back pressure from impaired filling is transmitted into the veins of the neck. Muffled heart sounds occur because the pericardial effusion dampens the transmission of sound to the chest wall. Among the choices, the combination of hypotension, jugular venous distension, and muffled heart sounds best matches this pattern. Hypertension or loud heart sounds are not typical of tamponade, and normal vital signs with clear lungs would not reflect the hemodynamic compromise seen in tamponade.