Beck’s triad of cardiac tamponade includes all, Except:
**Core Concept**
Cardiac tamponade is a life-threatening condition characterized by the accumulation of fluid in the pericardial space, leading to impaired cardiac filling and decreased cardiac output. **Beck's triad** is a classic sign of cardiac tamponade, consisting of three key findings. The underlying principle being tested is the pathophysiology of cardiac tamponade and its clinical presentation.
**Why the Correct Answer is Right**
Beck's triad includes hypotension, muffled heart sounds, and jugular venous distension. The correct answer is the option that does not belong to Beck's triad. Since the options are not provided, let's consider the typical components of Beck's triad and a common exception.
**Why Each Wrong Option is Incorrect**
**Option A:** Hypotension is a key component of Beck's triad, resulting from decreased cardiac output.
**Option B:** Muffled heart sounds are another component, due to the fluid accumulation in the pericardial space.
**Option C:** Jugular venous distension is the third component, resulting from increased venous pressure.
**Clinical Pearl / High-Yield Fact**
A high-yield fact to remember is that **pulsus paradoxus**, an exaggeration of the normal decrease in systolic blood pressure during inspiration, is often seen in cardiac tamponade but is not part of Beck's triad.
**Correct Answer:** D. Pulsus paradoxus.