<P> Chest pain is a common symptom encountered by emergency medical services . Aspirin increases survival in people with acute coronary syndrome and it is reasonable for EMS dispatchers to recommend it in people with no recent serious bleeding . Supplemental oxygen was used in the past for most people with chest pain but is not needed unless the oxygen saturations are less than 94 % or there are signs of respiratory distress . Entonox is frequently used by EMS personnel in the prehospital environment . However , there is little evidence about its effectiveness . </P>
for complaints of sudden chest pain patients should take a
Aspirin