Electrocardiography is a fundamental part of cardiovascular assessment. It is an essential tool for investigating cardiac arrhythmias and ischemia. Just because electrocardiography is a basic skill in EM doesn't mean that our skills should be basic...we must be the EXPERTS! Below is a summary of some ECG basics including:
Troponin testing is an important component of the diagnostic workup and management of acute coronary syndromes (ACS). The increasing sensitivity of troponin assays has lowered the number of potentially missed ACS diagnoses, but this has also created a diagnostic challenge due to a decrease in the specificity of the test. From 1995 to 2007, the limit of troponin detection fell from 0.5 ng/mL to 0.006 ng/mL (see below graph). Robert Jesse summed up this frustration with the following quote:
When troponin was a lousy assay it was a great test, but now that it's becoming a great assay, it's getting to be a lousy test.