Document Detail


Strain rate imaging pre- and post-percutaneous coronary intervention: a potential role in the objective detection of ischaemia in exercise stress echocardiography.
MedLine Citation:
PMID:  18296398     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
AIMS: To determine the feasibility of strain rate imaging (SRI) in the objective detection of exercise-induced ischaemia. METHODS AND RESULTS: Sixteen patients undergoing elective percutaneous coronary intervention (PCI) underwent treadmill exercise stress echocardiography (ESE) pre- and post-PCI. Measurement of systolic SRI parameters was attempted in all myocardial segments at baseline, peak stress, and in recovery. Segments were divided into those supplied by target (Group 1) and non-target vessels (Group 2). Percutaneous coronary intervention was successful in all patients. In Group 1, there was no significant difference in post-systolic strain rate (SRps) at baseline or at peak stress but there was significantly greater SRps pre-PCI compared with post-PCI at 30 min into recovery (-0.37 +/- 0.53 vs. -0.07 +/- 0.44 s(-1), P = 0.004). There were similar findings with the SRps index [ratio of SRps:peak systolic strain rate (SRsys)]. Group 2 segments did not demonstrate any significant differences in SRI parameters pre- and post-PCI. At peak exercise pre-PCI, Group 1 segments had significantly delayed time to SRsys compared with Group 2 (0.12 +/- 0.05 vs. 0.09 +/- 0.05 s, P = 0.013), a difference that was abolished post-PCI. CONCLUSION: This suggests a potential role for SRI in the objective detection of exercise-induced ischaemia by echocardiography at peak stress and during recovery at the time of improved image quality.
Authors:
J Thambyrajah; K Vijayalakshmi; R J Graham; A J Turley; M A de Belder; M J Stewart
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Publication Detail:
Type:  Comparative Study; Journal Article     Date:  2008-02-12
Journal Detail:
Title:  European journal of echocardiography : the journal of the Working Group on Echocardiography of the European Society of Cardiology     Volume:  9     ISSN:  1532-2114     ISO Abbreviation:  Eur J Echocardiogr     Publication Date:  2008 Sep 
Date Detail:
Created Date:  2008-08-21     Completed Date:  2008-12-31     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100890618     Medline TA:  Eur J Echocardiogr     Country:  England    
Other Details:
Languages:  eng     Pagination:  646-54     Citation Subset:  IM    
Affiliation:
Cardiothoracic Division, The James Cook University Hospital, Middlesbrough TS4 3BW, UK. jeet.thambyrajah@stees.nhs.uk
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MeSH Terms
Descriptor/Qualifier:
Angioplasty, Transluminal, Percutaneous Coronary*
Echocardiography, Stress*
Exercise Test*
Exercise Tolerance*
Feasibility Studies
Female
Humans
Male
Middle Aged
Myocardial Ischemia / therapy*,  ultrasonography*
Systole
Time Factors

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


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