During cardiac cath procedure, the blade plunger would not allow contrast to move through system; pt undergoing pci with wires and balloon in place; cardiologist unable to verify pci results.Cardiologist pressed hand control device to deliver contrast and the black plunger got stuck midway within the manifold.At this point, no contrast or saline could be injected to pt; cath lab staff attempted to purge contrast and saline through manifold - "manifold failure" continued to display on screen.Final step to resolve issue: replaced acist apparatus with 4 port manifold to complete pci procedure.Total time 13.69 minutes before resolved.No harm to pt.
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