The support wire 1106 also helps to position the catheter 1100 within the right ventricle to allow for positioning within the right ventricle RV and with respect to the septal wall SW. The support wire 1106 is preferably made from an elastic material, such as a nickel-titanium alloy or the like, and has a preformed shape at or near a distal end of the wire configured to stabilize and position the