Spontaneous multivessel coronary artery spasm diagnosed with intravascular ultrasound imaging: A case report

Figure 1 Electrocardiographic findings in August 2017. A: Admission electrocardiography without symptoms; B: ST-segment elevation in II, III, aVF and V2-V5 leads during a chest squeezing episode in the early morning at 6:08; C: ST-segment depression in II, III and aVF, and ST-segment elevation in V2-V5 leads 83 s after the chest squeezing episode; D: ST segment depression in II, III and aVF, and ST-segment elevation in V2-V5 leads 3 min after the chest squeezing episode; and E: ST-segment elevation or depression disappeared 3 min and 25 s after sublingual administration of nitroglycerin.