Factors associated with patient delayFailure to recognise a heart attackA popular perception of a heart attack is of the victim experiencing sudden excruciating chest pain, clutching his or her chest, and collapsing.12 People may not know that symptoms such as dyspnoea, nausea or syncope may occur.7 In a major US study, one-third of 434 877 subjects with confirmed myocardial infarction did not hav