Mild myocardial injury during percutaneous coronary intervention based on minor changes on electrocardiogram and heart rate variability

Figure 1 Flow-chart of the enrolment of coronary heart disease patients with serial electrocardiogram evaluations. PCI: Percutaneous coronary intervention; CAD: Coronary heart disease.

Figure 2 The changes of certain composite parameters in three clusters. A: Uscore; B: Complex serious cardiovascular events risk assessment. 1-Uscore: Uscore index values prior stunting, 2-Uscore: After stunting; 1-CA CVE: Prior to the stenting “Complex serious cardiovascular events risk assessment” (blue); 2-CA CVECVE: After the stenting “Complex serious cardiovascular events risk assessment” (red).

Figure 3 Index changes in three clusters prior to (blue) and after (red) stenting. A: Changes of integral characteristic of interval ST-T shape in lead II; 1-ST-T (lead II): Prior to the stenting integral characteristic of interval ST-T shape in lead II; 2-ST-T (lead II): After the stenting integral characteristic of interval ST-T shape in lead II; B: Psychoemotional state; C: Heart rhythm abnormalities.