Recovery of regional systolic and diastolic myocardial function after acute myocardial infarction evaluated by two‐dimensional speckle tracking echocardiography

Abstract

Summary Purpose The assessment of temporal changes in systolic and diastolic regional left ventricle function by two‐dimensional speckle tracking echocardiography (STE) after successful reperfusion therapy of acute myocardial infarction (AMI). Methods A total of 97 consecutive patients admitted with AMI and treated with successful percutaneous coronary intervention were included in this study. On days 1, 2, 3, 7, 30 and 180 following admission patients underwent transthoracic echocardiography with subsequent measurement of systolic longitudinal strain (SLS), systolic longitudinal strain rate (SRS) and early diastolic longitudinal strain rate (SRe) in left ventricular segments by speckle tracking technique. Results The largest increase in regional SLS and SRS was observed between day 1 and 2. On days 3, 7, 30 and 180 further improvement was noticeable, but the changes were less significant. The highest prognostic value among STE parameters for predicting systolic function recovery after 6‐month‐long follow‐up was achieved by measuring SLS on day 3 (area under the curve = 0·878). Conclusions The most of regional systolic function recovery occurs within the first 2 days. The recovery of regional diastolic function takes longer – the most significant part of improvement occurs within the first 7 days. STE parameters have prognostic value for predicting the improvement of systolic function after 180 days.

Implementation of convolutional neural network categorizers in coronary ischemia detection

“…The malfunction of the left ventricle section is associated with ischemia. It guides the doctor in the preparatory work for dealing with the associated vessels that are infarcted and other related problems 54,55 . Furthermore, it has been demonstrated that the parameters of the muscles' distortion obtained via echocardiography, such as stretch, stretch rate, and contraction, are confirmed to be accurate parameters for recognizing cardiac vessel damage 56 .…”

Assessment of Left Ventricular Systolic Function After Revascularization in Patients with ST Segment Elevation Myocardial Infarction by Stratified Strain Technique

“…Magnetic resonance imaging, tissue doppler, and speckle tracking have been used to study the changes in systolic and diastolic function after PCI in STEMI patients [6][7][8] . Katarzyna [9] et al performed PCI on 97 patients with STEMI, and measured the left ventricular segmental systolic function on the 1st, 2nd, 3rd, 7th, 30th and 180th days after the operation with speckle tracking technology. They found that most of the local systolic function recovery occurred on the rst two days, especially within 24 h after the successful reperfusion treatment, but their study did not group according to S-TO-B.…”

Contemporary perioperative haemodynamic monitoring

“…The slope of the regional stretch-strain relationship measured from tissue Doppler imaging (TDI) can be used as a noninvasive index of the myocardial inotropic state, but cannot be used in patients with atrial arrhythmias or high heart rates with fusion of mitral inflow E and A waves [120]. Recently, non-invasive speckle tracking echocardiography (STE) allowed combined regional and global myocardial function assessment [123,124]. Global peak longitudinal strain (GLS), determined from STE, is a sensitive and feasible method, which overcomes many of the limitations of LVEF.…”

“…It can be used to elucidate left ventricular dysfunction in septic shock patients in a discontinuous manner, with improved prediction of prognosis after myocardial infarction in comparison with LVEF [125]. However, optimal imaging is necessary, and GLS can be affected by heart rate variability, breathing translation, and choice of region of interest in the myocardium [120,124].…”