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In the hands of a skilled surgeon the prognosis for surviving surgery is 90%. If the dog survives surgery the prognosis for a full life is excellent. The radiographic changes should resolve in 6 – 12 months.

It is reported that >60% of cases will die within 1 year without surgery. These findings are incompletely substantiated.

In the authors’ experience the prognosis is excellent with both the coil embolization and surgical ligation procedures.

In reverse PDA, animals may live for a few years, however debilitated by cyanosis.