Is this ECG j-point elevated? Is the st-segment elevated only in the anterior wall? Is there any elevation in the lower wall?
This electrocardiogram should be considered a normal electrocardiogram, does not support the anterior interval wall myocardial infarction, if you are thin, you can have this change, in addition the first electrocardiogram results have obvious errors, the heart rate is normal, no bradycardia, you can further do a cardiac enzyme and cardiac ultrasound to determine.
At present, there is nothing abnormal in your ECG, pay attention to follow-up observation, and heart problems cannot be evaluated by ECG alone, but also combined with your clinical symptoms, such as chest tightness and shortness of breath, and need to check the heart ultrasound, and if necessary, check the exercise plate test.
From your current electrocardiogram results there is no big problem, J-point elevation more than considered, may be early repolarization caused by this situation is generally mostly benign changes.Do not worry too much, to combine your situation to specific analysis, more rest, avoid strain and cold.Review regularly.If there is chest tightness and chest pain, then further tests may be needed.