ABSTRACT
Angiographic measures of coronary perfusion are the predominant determinants of survival among patients with ST-segment elevation myocardial infarction (STEMI) after thrombolytic and primary PCI. The thrombolysis in myocardial infarction (TIMI) flow grade classification scheme characterizes the extent of coronary flow in patients with STEMI treated with systemic thrombolytic agents, and in patients presenting with non-STEMI and unstable angina. The TIMI frame count (1) and the TIMI myocardial perfusion grade were developed to further quantify anterograde flow and assess distal microvascular perfusion (2).
