11. Parallel wire and IVUS guide antegrade
Parallel wire should be used when there are features suggestive of poor success rates with stingray. It is important not to get stuck in failure mode in parallel wire, if no progress is made after 15 minutes of parallel wiring, IVUS guided wiring should be used. A 1.5mm balloon should be used on one of the antegrade wire into the subintimal space to allow IVUS catheter to be delivered. It is recommended to use high penetration wire (e.g. conquest 9 or 12) for IVUS guide antegrade wiring.
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