Читать книгу Interventional Cardiology - Группа авторов - Страница 125

Both right‐ and left‐sided vein grafts with a transverse origin can often be cannulated with a JR4 guide catheter; however, guide support can be suboptimal. If the vein graft points downwards (inferior or vertical such as often for right coronary artery (RCA) grafts), coaxial engagement may be difficult with a JR guide. A multipurpose or RCB guide is usually coaxially aligned when the take off is inferior and would also offer good support if required. Left‐sided vein grafts lesions can also often be attempted with a JR guide or, if more support is needed, with an Amplatz or Hockeystick guide catheter. If the ascending aorta is large or dilated, a guide with a more pronounced secondary curve is frequently required such as the left coronary bypass (LCB) or a large Amplatz left shape may be selected.