Electrocardiographic differentiation of the ST-segment depression of acute myocardial injury due to the left circumflex artery occlusion from that of myocardial ischemia of nonocclusive etiologies.
Lead distributions of peak ST-segment depression were compared between patients undergoing left circumflex artery percutaneous transluminal coronary angioplasty and exercise tolerance test. Localization of peak ST-segment depression to leads V2 or V3 was 96% specific and 70% sensitive for differentiating ischemia due to occlusion of left circumflex artery occlusion from nonocclusive ischemia.
Shah
A
A
Duke University Medical Center, Durham, North Carolina 27705, USA.
Wagner
G S
GS
Green
C L
CL
Crater
S W
SW
Sawchak
S T
ST
Wildermann
N M
NM
Mark
D B
DB
Waugh
R A
RA
Krucoff
M W
MW
D015906:Angioplasty, Balloon, Coronary; D004562:Electrocardiography; D005080:Exercise Test; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000209:etiology* / Q000503:physiopathology* / Q000628:therapy; D011237:Predictive Value of Tests; D012189:Retrospective Studies