Table 2. Changes of ECG before and after the operation in the model group.

No.	Heart rate before operation (times/min)	ST-segment position before operation	Heart rate after operation (times/min)	ST-segment elevation (mV)	ST-segment down (mV)
ECG: electrocardiogram.
1	77	Level with baseline position	118	V1–V4 and Ⅲ raised upward with the bow of 0.1–0.6 mV	Ⅰ and aVF levels decreased by 0.3–0.6 mV
2	82	Level with baseline position	111	V1–V5 raised upward with the bow of 0.1–1.0 mV	Ⅰ level decreased by 0.6 mV
3	70	Level with baseline position	113	V1–V3 and aVR raised upward with the bow of 0.2–0.7 mV	Ⅰ and aVF levels decreased by 0.4–0.9 mV
4	85	Level with baseline position	122	V2–V4 and aVR are raised upward with the bow of 0.2–0.9 mV	aVF level decreased by 0.7–0.8 mV
5	73	Level with baseline position	109	V1–V2 raised upward with the bow of 0.3–0.8 mV	Ⅰ and aVF levels decreased by 0.5–1.0 mV
6	80	Level with baseline position	123	V3–V4 raised upward with the bow of 0.2–0.6 mV	Ⅰ level decreased by 0.7 mV
7	88	Level with baseline position	120	V4–V5 raised upward with the bow of 0.2–1.0 mV	Ⅰ and aVF levels decreased by 0.3–0.6 mV
8	76	Level with baseline position	119	V2–V5 raised upward with the bow of 0.2–0.7 mV	aVF level decreased by 0.5–0.6 mV