2008, English, Article edition: Strain rate imaging pre- and post-percutaneous coronary intervention: a potential role in the objective detection of ischaemia in exercise stress echocardiography Thambyrajah, J.; Vijayalakshmi, K.; Graham, R.J.; ...

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  • text/​html
Published
  • Oxford University Press
  • 2008-09-01 00:00:00.0
Language
  • English

Edition details

Title
  • Strain rate imaging pre- and post-percutaneous coronary intervention: a potential role in the objective detection of ischaemia in exercise stress echocardiography
Author
  • Thambyrajah, J.
  • Vijayalakshmi, K.
  • Graham, R.J.
  • Turley, A.J.
  • de Belder, M.A.
  • Stewart, M.J.
Published
  • Oxford University Press
  • 2008-09-01 00:00:00.0
Physical Description
  • text/​html
Subjects
Notes
  • 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.
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  • Copyright (C) 2008, European Society of Cardiology
Language
  • English
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