Should we always call 911/999 to get it right first time in suspected myocardial infarction?

Heartbeat: treatment delays with telephone triage for acute myocardial infarction

“…In the accompanying editorial, Sze and colleagues2 point out the challenges in early diagnosis of MI, especially by phone triage. ‘Indeed, even when senior medical input is involved in the triage decision-making, myocardial infarction only accounts for one in nine of chest pain call-outs’ (figure 1).…”