PMC6150573_01
Straight posteroanterior view of the radial artery graft demonstrating the spasm in the proximal end of the graft.
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The RA graft demonstrated a severe concentric narrowing proximally (Figure 1).
Posteroanterior caudal view showing the partial resolution of the spasm after intracoronary nitroglycerine administration.
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After the diagnostic catheter was exchanged for a guiding catheter and intracoronary nitroglycerine administered, complete resolution of the lesion was observed (Figure 2, 3).