The largest proportion of the total pre-hospital delay is the interval between the onset of symptoms and the decision to seek medical treatment. Finnegan et al. described that the reasons for delay in seeking medical evaluation generally stem from patient misconceptions about symptom experience, expectations, and attribution. In many cases, patients expect the type of heart attack that they often see in movies or on television: the kind of crushing chest pain that drops a person to the ground. The reality is that many heart attacks are much "quieter," causing only mild chest pain or discomfort or other symptoms such as shortness of breath or diaphoresis.