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Shapes and sizes of commonly used guide catheters for the right coronary system are shown in Figure 5.2. The take off of the right coronary artery tends to vary more than that of the left coronary. If the take off is transverse, the most commonly used guide would probably be a Judkins Right (JR) 4. With a superiorly directed take off, a JR, Hockeystick, EBU‐R, or Amplatz R or L are more suitable. Inferiorly directed take offs can be cannulated with a multipurpose or SLS catheter. Although the JR shape does not provide much active support, the guide can often be actively engaged more deeply to augment support if required by “deep seating” it, ie advancement and clockwise rotation of the guide.

Figure 5.2 Shapes of commonly used guide catheters for the right coronary system.