A feeling of pressure behind the sternum and breathlessness occur in a 43-years-old man with hypersthenic constitution during walking. The discomfort disappears when the patient has a rest. On ECG - correct sinus rhythm, horizontal electrical axis of the heart. What is your diagnostic assumption?
1) Esophagitis
2) Angina pectoris
3) Tracheitis
4) Bronchial asthma
5) Miocardial infraction