Speckle tracking echocardiography is a sensitive tool for the detection of myocardial ischemia: a pilot study from...

Area of Science:

• Cardiology
• Echocardiography
• Myocardial Mechanics

Background:

• Rotational myocardial motion analysis is a sensitive indicator of myocardial ischemia.
• Percutaneous coronary intervention (PCI) procedures can induce temporary myocardial ischemia.

Purpose of the Study:

• To evaluate the efficacy of speckle tracking echocardiography in assessing myocardial ischemia induced by angioplasty.
• To quantify changes in circumferential and radial myocardial strain and displacement during balloon occlusion.

Main Methods:

• Utilized speckle tracking echocardiography for real-time, 2-dimensional, angle-independent evaluation of myocardial motion.
• Monitored circumferential and radial strain and displacement in 8 patients undergoing PCI.
• Measurements were taken in the parasternal short-axis view at the papillary muscle level.

Main Results:

• Acute regional myocardial ischemia significantly reduced circumferential strain (-35.6 +/- 23.1%) and radial strain (-27.1 +/- 23.2%).
• Circumferential displacement decreased by -49.6 +/- 27.2% and radial displacement by -43.2 +/- 26.8%.
• Time to peak systolic values was significantly prolonged, with a more pronounced effect in the circumferential domain (P < .05).

Conclusions:

• Speckle tracking echocardiography is a promising tool for detecting acute regional myocardial dysfunction.
• This technique has the potential for efficient clinical bedside application in monitoring ischemia during interventions.