Anyone who suspects symptoms of a heart attack should call emergency services immediately.

Only 65 percent of women would call emergency services if they suspected they were having a heart attack, according to a 2012 survey.

Emergency treatment can save lives. Anyone noticing the following symptoms should call an ambulance immediately, especially if the signs are present for 5 minutes or more:

•       chest pain or discomfort;

•       pain in the upper body, including arms, back, neck, jaw, or shoulder;

•       difficulty breathing;

•       dizziness;

•       extreme weakness;

•       indigestion or heartburn;

•       nausea;

•       rapid or irregular heartbeat;

•       shortness of breath;

•       sweating;

•       unexplained anxiety;

•       vomiting.