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. 2005 Oct 27;11(Suppl 1):131–140. doi: 10.1177/15910199050110S117

Diagram 4.

Diagram 4

Different times of breaks (waiting time) after the Onyx injection period from zero to 5 minutes and the influence on the pressure inside the microcatheter clearly demonstrates that beyond 3 min, there is an immense increase of the pressure and with it risk of unintentional microcatheter occlusion. Two minutes maximum is recommended in the Instructions For Use.