Pediatricsbasic
Beck's triad comprises low arterial blood pressure, distended neck veins, and _____ heart sounds.
Answer
muffled
Explanation
The missing term is **muffled**. Beck's triad, as presented in the lecture, consists of low arterial blood pressure, distended neck veins, and muffled heart sounds in acute cardiac tamponade. The triad brings together evidence of reduced forward circulation, elevated venous pressure, and reduced transmission of heart sounds through a substantial effusion. **Key takeaway:** Beck's triad is hypotension, neck-vein distension, and muffled heart sounds. **Glossary:** **Arterial blood pressure**: pressure within the arteries. **Jugular veins**: neck veins used clinically to assess venous pressure.
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