Application of a rapid exchange extension catheter technique in type B2/C nonocclusive coronary intervention via a transradial approach

Figure 3 An extremely tortuous lesion of the distal segment of the right coronary artery. A: A lesion located in the distal segment of right coronary artery before the bifurcation, with extreme tortuosity in the proximal and middle segments of the right coronary artery; B: A stent (2.5 mm × 13 mm) was implanted with the use of the rapid exchange extension catheter; C: Final angiographic result.