When a person is feeling uncomfortable pressure, fullness and pain in the centre of the chest and pain is spreading to the shoulders, back, neck along with sweating then in this situation a person should be taken to the hospital in the meanwhile first aid should be performed to stabilize the person.
First Aid:
Call emergency helpline number, if a person doesn't have access to emergency medical services, have a neighbor or a friend drive to the nearest hospital.
Begin cardiopulmonary resuscitation (CPR), for untrained person doctors recommend performing only chest compressions (about 100 to 120 compressions a minute).
Chew and swallow an aspirin, unless you are allergic to aspirin or have been told by the doctor never to take aspirin.
Seek medical help, if:
Chest discomfort that may last more than a few minutes or go away and come back; it may feel like squeezing, fullness, pressure, or pain.
Pain or discomfort in the upper body, including arm, left shoulder, back, neck, jaw, or below the breastbone
Difficulty breathing or shortness of breath (with or without chest pain)