Document Detail


Anterior ST segment depression in acute inferior myocardial infarction as a marker of greater inferior, apical, and posterolateral damage.
MedLine Citation:
PMID:  3788768     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The clinical significance of anterior precordial ST segment depression during acute inferior myocardial infarction was evaluated in 67 consecutive patients early after onset of symptoms with gated blood pool scans, thallium-201 perfusion images, and 12-lead ECGs. Patients with anterior ST depression (n = 33) had depressed mean values for left ventricular ejection fraction (54 +/- 2% [mean +/- S.E.M.] vs 59 +/- 2%; p = 0.02), cardiac index (3.1 +/- 0.2 vs 3.6 +/- 0.2 L/m2; p = 0.03), and ratio of systolic blood pressure to end-systolic volume (2.0 +/- 0.1 vs 2.5 +/- 0.3 mm Hg/ml; p = 0.04) compared to patients with no anterior ST depression (n = 34). Patients with anterior ST depression had (1) lower mean wall motion values for the inferior, apical, and inferior posterolateral segments (p less than 0.05) and (2) greater reductions in thallium-201 uptake in the inferior and posterolateral regions (p less than 0.05). However, anterior and septal (1) wall motion and (2) thallium-201 uptake were similar in patients with and without ST depression. Thus, anterior precordial ST segment depression in patients with acute inferior wall myocardial infarction represents more than a reciprocal electrical phenomenon. It identifies patients with more severe wall motion impairment and greater hypoperfusion of the inferior and adjacent segments. The poorer global left ventricular function in these patients is a result of more extensive inferior infarction and not of remote septal or anterior injury.
Authors:
T D Ruddy; T Yasuda; H K Gold; R C Leinbach; J B Newell; K A McKusick; C A Boucher; H W Strauss
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  American heart journal     Volume:  112     ISSN:  0002-8703     ISO Abbreviation:  Am. Heart J.     Publication Date:  1986 Dec 
Date Detail:
Created Date:  1986-12-30     Completed Date:  1986-12-30     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0370465     Medline TA:  Am Heart J     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1210-6     Citation Subset:  AIM; IM    
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MeSH Terms
Descriptor/Qualifier:
Electrocardiography*
Heart Ventricles / physiopathology,  radionuclide imaging
Humans
Myocardial Infarction / diagnosis*,  physiopathology
Prospective Studies
Radioisotopes / diagnostic use
Stroke Volume
Systole
Thallium / diagnostic use
Time Factors
Grant Support
ID/Acronym/Agency:
HL07416/HL/NHLBI NIH HHS; HV7-2940/HV/NHLBI NIH HHS
Chemical
Reg. No./Substance:
0/Radioisotopes; 7440-28-0/Thallium

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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