Case of angina pectoris at rest and during effort due to coronary spasm and myocardial bridging

Figure 2 Coronary angiography during the spasm provocation tests. A: In the right coronary artery (RCA), a diffuse coronary spasm occurred at the mid-distal segments after the intracoronary infusion of 50 μg acetylcholine (ACh); B: In the left coronary artery, a diffuse coronary spasm occurred at the mid-distal segments of the left anterior descending coronary artery (LAD) after the intracoronary infusion of 100 μg ACh. The coronary spasm segments are indicated using arrows.