What to do if the wire can cross the retrograde channel but the microcatheter cannot.
Channel |
Corsair/turnpike won’t cross |
Switched microcatheter won’t cross |
Fail to cross after balloon dilatation. |
| L-> R septal | Switch to Caravel/ Turnpike LP* | 1.25 mm balloon to dilate channel | Side-branch anchor balloon |
| R->L Septal | Beware too tortuous PDA to septal channel angle | ||
| Epicardial | Switch to finecross | Beware too small channel. |
- If septal ostium stented -> dilate septal ostium with small balloon.