Ultrasound Research Today is a free monthly online journal that collates and summarizes the latest research about Ultrasound, including details on screening, diagnosis, pregnancy, detection. | ||||||||
|
Speckle tracking echocardiography is a sensitive tool for the detection of myocardial ischemia: a pilot study from the catheterization laboratory during percutaneous coronary intervention.Winter R, Jussila R, Nowak J, Brodin LA Department of Laboratory Medicine, Division of Clinical Physiology, Karolinska Institutet at Karolinska University Hospital, Stockholm, Sweden. reidar.winter@karolinska.se <reidar.winter@karolinska.se> Analysis of rotational myocardial motion has been reported to be a sensitive index of myocardial ischemia. In this study, circumferential and radial myocardial strain and displacement was monitored during angioplasty balloon-induced myocardial ischemia in 8 patients undergoing percutaneous coronary intervention. The circumferential and radial variables were measured simultaneously in parasternal short-axis view at the papillary muscle level using the recently introduced speckle tracking echocardiography technique that allows 2-dimensional, angle-independent, real-time evaluation of the myocardial motion (2-dimensional strain modality). Acute regional myocardial ischemia caused a significant reduction of circumferential (-35.6 +/- 23.1%) and radial (-27.1 +/- 23.2%) strain and displacement (-49.6 +/- 27.2% and -43.2 +/- 26.8%, respectively). Simultaneously, time to the respective peak systolic values became significantly prolonged, the circumferential ischemic response in temporal domain being more pronounced (P < .05). Speckle tracking echocardiography-based analysis of rotational myocardial motion has a potential to become an efficient clinical bedside tool in the detection of acute ischemic regional myocardial dysfunction. Published 1 August 2007 in J Am Soc Echocardiogr, 20(8): 974-81.
© 2004-2008 Ultrasound Research Today. All Rights Reserved. |
| ||||||
