What are the symptoms of acute aortic regurgitation (AR)?

Updated: Nov 19, 2018
  • Author: Stanley S Wang, JD, MD, MPH; Chief Editor: Terrence X O'Brien, MD, MS, FACC  more...
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Cases of acute AR may be fulminant and lead to cardiogenic shock; patients who have CHF or shock associated with severe AR often appear gravely ill. Other symptoms of acute AR include the following:

  • Tachycardia

  • Peripheral vasoconstriction

  • Cyanosis

  • Pulmonary edema

  • Arterial pulsus alternans; normal LV impulse

Early diastolic murmur (lower pitched and shorter than in chronic AR) may be present. An Austin-Flint murmur, which is caused by the regurgitant flow causing vibration of the mitral apparatus, is lower pitched and short in duration. The decrescendo diastolic murmur is heard best with the patient leaning forward in full expiration in a quiet room. It is one of the cardiac murmurs most commonly missed.

A murmur at the right sternal border is associated more often with aortic dissection than it is with any other cause of AR.

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