Τίτλος:
Significance of exercise-induced simultaneous ST-segment changes in lead
aVR and V-5
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
This study was undertaken to investigate the ability of the
exercise-induced ST depression in lead V-5 and concomitant ST elevation
in lead aVR for the identification of the significantly narrowed
coronary artery in patients with single vessel disease. We studied 229
consecutive patients who developed the aforementioned exercise-induced
electrocardiographic changes. All underwent Thallium-201 scintigraphy
and coronary arteriography. Patients were divided into three groups. In
group A, 58 patients with ST depression in V-5 and ST elevation in aVR,
in group B 149 patients with ST depression in V-5 without ST elevation
in aVR, and in group C 22 patients with ST elevation in aVR without ST
depression in V-5 induced with exercise, were included. In group A, 81%
of the patients while in group B, 29% and in group C only 18% of the
patients had left anterior descending artery disease. According to
Thallium-201 scintigraphy, 80% of the group A, 27% of the group B and
12% of the group C patients developed myocardial ischemia in areas
supplied by the left anterior descending artery. Thus, exercise-induced
ST depression in V-5 and concomitant ST elevation in aVR, may detect
left anterior descending artery significant stenosis in patients with
single vessel disease. (C) 1999 Elsevier Science Ireland Ltd. All rights
reserved.
Συγγραφείς:
Michaelides, AP
Psomadaki, ZD
Richter, DJ
Dilaveris, PE and
Andrikopoulos, GK
Stefanadis, C
Gialafos, JE
Toutouzas, PK
Περιοδικό:
International Journal of Cardiology
Εκδότης:
ELSEVIER SCI IRELAND LTD
Λέξεις-κλειδιά:
lead aVR; exercise testing; Thallium-201 scintigraphy; left anterior
descending artery
DOI:
10.1016/S0167-5273(99)00115-1
