Let go of the tight squeeze the body clothing: ties, belts; undo the buttons on his shirt.
Take a sedative, if possible plant origin: tincture of valerian, motherwort; drops "valokardin", "Corvalol" drops Zelenin. They can be diluted in water or drip onto a sugar cube and then dissolve it in the mouth.
Drink some cold water - this measure will cause a reflex slowing of the heartbeat. Gently massage the area of the pulsation of the carotid artery, located in the neck.
Perform a simple exercise in breath-hold: Open the window, stand next to it, take a deep breath of fresh air and hold your breath, count to yourself to 5 or 10, then exhale slowly through your nose.
Try alternately press the index and middle fingers on the eyeballs. Exerting pressure force for approximately 5 seconds. You can try to influence the index finger recess on the upper lip. Pinch a little finger nail plate of the left hand, repeat 10-15 times.
If the cause of heart attack is heart disease, drink assigned to you by your doctor - cardiologist drug. This can be a blocker like "Verapamil" or anything else. But to pick their own afford such medicines should not be serious.
Place the tablet under the tongue "Validol" or capsule "Korvalmenta" - these drugs have a calming effect and can relieve heart attack.
If an attack of tachycardia does not pass, on the contrary, the state continues to deteriorate, call an ambulance. Signs of heart failure occurred are symptoms such as pallor or cyanosis appearance of the skin, cough, shortness of breath appearance. Prior to the arrival of doctors perform all the above steps.
When repetitive attacks serdtsibieniya, accompanied by dizziness, pain in the heart and other symptoms, you should see a doctor, go ECG and other tests.