After reaching the emergency room of a hospital, the patient is given oxygen with complete rest. The patient is given medicines like Sorbitrate and Aspirin if he has not already taken them.
The diagnosis is confirmed after getting the cardiogram. If the first cardiogram is normal, the patient is kept under blood pressure / ECG and oxygen saturation monitoring and second cardiogram is obtained after 15 to 60 minutes.
If the diagnosis is not confirmed with multiple cardiograms and if the doctor strongly suspects the possibility of heart attack in the basis of health background and symptoms of the patient, several specific blood investigations are done. CKMB and Troponin blood tests are helpful in diagnosis of heart attack.
Besides this, other investigations such as haemoglobin and blood counts, levels of sugar and cholesterol and blood investigations to know efficiency of kidney and liver, etc. are done. Echocardiography is also done in well equipped hospitals.
All these investigations helps the doctor to conclude the diagnosis and treat accordingly. If it appears to be stable angina or non-cardiac pain, the patient is given medicines, sent home and called after certain days for stress test.