What are the postcatheterization risks for patients with patent ductus arteriosus (PDA)?

Updated: Nov 20, 2018
  • Author: Luke K Kim, MD; Chief Editor: Stuart Berger, MD  more...
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Typically, complete occlusion is achieved at catheterization. Occasionally, a tiny residual left-to-right shunt remains at the end of the procedure, which closes by thrombus formation over the following days or weeks. Left-to-right shunt rarely persists through a partially occluded patent ductus arteriosus (PDA). Usually, the magnitude of the shunt is significantly smaller than before occlusion. Due to concerns about the long-term risk of endocarditis, this residual defect should be closed. Often, this can be accomplished with a second catheter procedure. Rare reports describe association of a persistently patent ductus after occlusion attempts with hemolysis or endocarditis.

Procedural risks of patent ductus arteriosus (PDA) occlusion by catheter are few and largely influenced by the experience of the physician performing the procedure. These risks include embolization of the device being used to occlude the patent ductus arteriosus (PDA), blood vessel injury, access site bleeding, infection, and stroke, among others. In the case of device embolization, the device can usually be retrieved by transcatheter techniques, and a second device can be successfully placed in the patent ductus arteriosus (PDA).

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