Which finding is most characteristic of pericardial tamponade?

Which finding is most characteristic of pericardial tamponade?

• A. Distended neck veins
• B. Dyspnea
• C. Narrow pulse pressure
• D. Muffled heart sounds

Answer: (D)

Tamponade happens when fluid around the heart compresses it and prevents proper filling, leading to reduced cardiac output. The most characteristic sign is muffled heart sounds because the surrounding fluid dampens the transmission of sound from the heart to the stethoscope. While swollen neck veins and shortness of breath commonly occur due to elevated venous pressure and poor cardiac output, they are less specific and can appear in other conditions. A narrow pulse pressure can also accompany tamponade, but it isn’t as distinctive as the muffled sounds heard over the heart. Together, muffled heart sounds are the best single clue on exam that points toward pericardial tamponade.

Tamponade happens when fluid around the heart compresses it and prevents proper filling, leading to reduced cardiac output. The most characteristic sign is muffled heart sounds because the surrounding fluid dampens the transmission of sound from the heart to the stethoscope. While swollen neck veins and shortness of breath commonly occur due to elevated venous pressure and poor cardiac output, they are less specific and can appear in other conditions. A narrow pulse pressure can also accompany tamponade, but it isn’t as distinctive as the muffled sounds heard over the heart. Together, muffled heart sounds are the best single clue on exam that points toward pericardial tamponade.