Patent ductus arteriosus history and symptoms

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor-In-Chief: Priyamvada Singh, M.B.B.S. [2], Cafer Zorkun, M.D., Ph.D. [3]; Assistant Editor-In-Chief: Kristin Feeney, B.S. [4]

History and Symptoms

Usually asymptomatic or may present with symptoms of heart failure and dyspnea. Depending on the size of the PDA, a cardiac murmur can be missed during the first physical exam of the newborn because of the high pulmonary pressure that avoids the left-to-right shunt at that time. When the pulmonary pressure drops, the murmur is evident.

Clinical manifestation of patent ductus arteriosus depends on degree of left to right shunting which in turn is affected by-

Small PDA

  • May be asymptomatic.
  • Sometimes identified incidentally on routine physical examinations (due to the presence of continuous flow murmurs) or on echocardiography performed for some other conditions.

Moderate PDA

Large PDA

Presentation of large PDA in infant and children are symptoms due to heart failure like-

Presentation of large PDA in adults.

It can cause left ventricular overload. However, if the condition goes uncorrected progressive rise in pulmonary artery pressure may occur that in turn can cause a reversal of shunt i.e. right to left sided shunting. The right to left shunt can cause cyanosis and in later stages may progress to Eisenmenger syndrome.

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