Figure 1. ACS-related STD



A. Non-AMI myocardial ischemia�horizontal. 
B.
Non-AMI myocardial ischemia�down-sloping. 
C.
Non-AMI myocardial ischemia � up-sloping. 
D
. STD in lead aVL as an early indication of inferior wall AMI. 
E.
STD in lead V1 due to posterior wall AMI. 
F.
STD in lead V1 due to posterior wall AMI. 
G.
Non-STD AMI. 
H.
Reciprocal STD.

Key: 
AMI � acute myocardial infarction; 
ACS � acute coronary syndrome; 
STD � ST segment depression.