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  Indian J Med Microbiol
 

Figure 1: (a) 12-lead electrocardiography showing negative T-wave in lead aVL; (b) 12-lead electrocardiography of the same patient done subsequently; showing ST elevation in leads II, III, and aVF with ST depression in leads I and aVL; (c) 12-lead-electrocardiography of a patient showing terminal QRS distortion in leads V2 and V3, i.e., the absence of S-wave and J-wave in leads V2 and V3; (d) 12-lead-electrocardiography showing progression into frank anterior wall myocardial infarction with ST-segment elevation in leads V1-V6; (e) 12-lead electrocardiography showing hyperacute T-waves which are asymmetric, broad based, and rounded in precordial leads V2 and V3; (f) 12-lead electrocardiography showing progression of hyperacute T-waves into anterior wall myocardial infarction; (g) 12-lead electrocardiography showing inverted U waves in precordial leads V5 and V6; (h) 12-lead electrocardiography of the same patient showing progression to anterior wall myocardial infarction with ST segment elevation in leads V1–V5; (i) 12-lead electrocardiography showing loss of precordial T-wave balance, i.e., T-wave amplitude in lead V1 more than T wave amplitude in lead V6; (j) 12-lead electrocardiography of the same patient showing progression to frank ST segment elevation myocardial infarction with ST-segment elevation in leads V1–V6

Figure 1: (a) 12-lead electrocardiography showing negative T-wave in lead aVL; (b) 12-lead electrocardiography of the same patient done subsequently; showing ST elevation in leads II, III, and aVF with ST depression in leads I and aVL; (c) 12-lead-electrocardiography of a patient showing terminal QRS distortion in leads V2 and V3, i.e., the absence of S-wave and J-wave in leads V2 and V3; (d) 12-lead-electrocardiography showing progression into frank anterior wall myocardial infarction with ST-segment elevation in leads V1-V6; (e) 12-lead electrocardiography showing hyperacute T-waves which are asymmetric, broad based, and rounded in precordial leads V2 and V3; (f) 12-lead electrocardiography showing progression of hyperacute T-waves into anterior wall myocardial infarction; (g) 12-lead electrocardiography showing inverted U waves in precordial leads V5 and V6; (h) 12-lead electrocardiography of the same patient showing progression to anterior wall myocardial infarction with ST segment elevation in leads V1–V5; (i) 12-lead electrocardiography showing loss of precordial T-wave balance, i.e., T-wave amplitude in lead V1 more than T wave amplitude in lead V6; (j) 12-lead electrocardiography of the same patient showing progression to frank ST segment elevation myocardial infarction with ST-segment elevation in leads V1–V6