Advanced Oncology Certified Nurse Practitioner (AOCNP) Certification Practice Test

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Which of the following is NOT a part of the classic presentation known as Beck Triad in Cardiac Tamponade?

  1. Muffled Heart Sounds

  2. Increased Blood Pressure

  3. Hypotension

  4. Increased Jugular Venous Distention

The correct answer is: Increased Blood Pressure

In the context of cardiac tamponade, the classic presentation known as Beck's Triad consists of three key clinical signs: muffled heart sounds, hypotension, and elevated jugular venous distension. Each of these signs is indicative of the hemodynamic compromise that occurs when fluid accumulates in the pericardial space, exerting pressure on the heart and inhibiting its ability to pump effectively. Muffled heart sounds arise due to the presence of fluid surrounding the heart, which dampens the sound of heartbeats. Hypotension occurs as the heart struggles to pump blood efficiently, leading to decreased blood pressure. Increased jugular venous distension is observed when the pressure from the pericardial fluid restricts the filling of the heart, causing backup of blood in the venous system, which manifests as distended neck veins. In contrast, increased blood pressure does not fit into this clinical picture. Instead of being elevated, patients with cardiac tamponade usually exhibit hypotension due to compromised cardiac output and vascular return. Therefore, recognizing that increased blood pressure is contrary to the signs outlined in Beck's Triad is essential in evaluating and diagnosing cardiac tamponade.