Data NOT reflecting CVP changes?

Data NOT reflecting CVP changes?

• A. Urinary output
• B. Nail bed color
• C. Skin turgor
• D. EKG rhythm

Answer: (D)

Central venous pressure reflects preload, the amount of venous return available to the right heart. When circulating volume and preload change, tissue perfusion and organ outputs respond accordingly. Urinary output tracks renal perfusion and thus can mirror shifts in preload and cardiac output; low urine output often signals reduced CO from low CVP. Nail bed color and skin turgor are bedside cues of peripheral perfusion and hydration, both influenced by circulating volume and venous return, so they can indicate changes in CVP. An EKG rhythm, however, reflects the heart’s electrical activity—conduction and rhythm—not the preload or central venous pressure. So it does not provide a direct indication of CVP changes.