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Flushing and paling of the nail beds (Quincke pulse) and a bounding radial pulse are typical physical findings found in which of the following cardiovascular disorders?
  1. Tricuspid regurgitation
  2. Coarctation of the aorta
  3. Thoracic aortic aneurysm
  4. Aortic regurgitation
Explanation
Answer: D - A Quincke pulse, which consists of alternate flushing and paling of the skin or nail beds, is associated with aortic regurgitation. Other characteristic features of the peripheral pulse in aortic regurgitation include the waterhammer pulse and pulsus bisferiens.
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