<abstract xmlns="http://www.w3.org/1999/xhtml">

<sec>
<h3>Background</h3>
<p>Two-dimensional speckle-tracking echocardiography (2D-STE) provides a quantitative tool to evaluate LV function at the regional level. The purpose of this study was to classify the types of regional longitudinal strain curves (LSC). Moreover, we propose a novel longitudinal strain curve index (LSCI) which we compared to the wall motion score index (WMSI).</p>
</sec>
<sec>
<h3>Methods</h3>
<p>We enrolled 100 healthy volunteers and 50 patients with prior myocardial infarction (MI). Each LSC was classified considering the positive peak (peak P), peak maximum strain (PMS), and time to maximum peak strain (TPMS) as follows: Type 1 (Peak P&lt;6%, PMS>6%, TPMS before aortic valve closure [AVC]); Type 2 (Peak P&lt;6%, PMS≥6%, TPMS after AVC); Type 3 (Peak P≥6%, PMS≥6%, TPMS before AVC); Type 4 (Peak P≥6%, PMS≥6%, TPMS after AVC); Type 5 (Peak P&lt;6%, PMS≥6%, TPMS first third of systole); Type 6 (Peak P&lt;6%, PMS&lt;6%); and Type 7 (Peak P≥6%, PMS&lt;6%). The longitudinal curve score index (LCSI) was obtained (sum of LSC type/18 segments).</p>
</sec>
<sec>
<h3>Results</h3>
<p>A total of seven types of LSC were identified. In the healthy subjects, LSC Type 1 (T1) and Type 2 (T2) were the most frequent. Type 3 (T3) and Type 4 (T4) were found in insignificant percentages while Type 5 (T5), Type 6 (T6), and Type 7 (T7) were not identified. When analyzed for the entire population, LSCI correlated strongly with WMSI (r=0.83, p&lt;0.01).</p>
</sec>
<sec>
<h3>Conclusions</h3>
<p>Analysis of LSC may provide a substantial support to visual assessment of regional LV function and the LCSI represents an index that is highly reproducible, independent of the examiner’s experience.</p>
</sec>
</abstract>

Background
Two-dimensional speckle-tracking echocardiography (2D-STE) provides a quantitative tool to evaluate LV function at the regional level. The purpose of this study was to classify the types of regional longitudinal strain curves (LSC). Moreover, we propose a novel longitudinal strain curve index (LSCI) which we compared to the wall motion score index (WMSI).


Methods
We enrolled 100 healthy volunteers and 50 patients with prior myocardial infarction (MI). Each LSC was classified considering the positive peak (peak P), peak maximum strain (PMS), and time to maximum peak strain (TPMS) as follows: Type 1 (Peak P<6%, PMS>6%, TPMS before aortic valve closure [AVC]); Type 2 (Peak P<6%, PMS≥6%, TPMS after AVC); Type 3 (Peak P≥6%, PMS≥6%, TPMS before AVC); Type 4 (Peak P≥6%, PMS≥6%, TPMS after AVC); Type 5 (Peak P<6%, PMS≥6%, TPMS first third of systole); Type 6 (Peak P<6%, PMS<6%); and Type 7 (Peak P≥6%, PMS<6%). The longitudinal curve score index (LCSI) was obtained (sum of LSC type/18 segments).


Results
A total of seven types of LSC were identified. In the healthy subjects, LSC Type 1 (T1) and Type 2 (T2) were the most frequent. Type 3 (T3) and Type 4 (T4) were found in insignificant percentages while Type 5 (T5), Type 6 (T6), and Type 7 (T7) were not identified. When analyzed for the entire population, LSCI correlated strongly with WMSI (r=0.83, p<0.01).


Conclusions
Analysis of LSC may provide a substantial support to visual assessment of regional LV function and the LCSI represents an index that is highly reproducible, independent of the examiner’s experience.

Classification of longitudinal strain curves measured by speckle-tracking echocardiography in normal and pathological myocardial segments

Romanian Journal of Cardiology

This work is licensed under the Creative Commons Attribution 4.0 International License.

Background
Two-dimensional speckle-tracking echocardiography (2D-STE) provides a quantitative tool to evaluate LV function at the regional level. The purpose of this study was to classify the types of regional longitudinal strain curves (LSC). Moreover, we propose a novel longitudinal strain curve index (LSCI) which we compared to the wall motion score index (WMSI).


Methods
We enrolled 100 healthy volunteers and 50 patients with prior myocardial infarction (MI). Each LSC was classified considering the positive peak (peak P), peak maximum strain (PMS), and time to maximum peak strain (TPMS) as follows: Type 1 (Peak P6%, TPMS before aortic valve closure [AVC]); Type 2 (Peak P<6%, PMS≥6%, TPMS after AVC); Type 3 (Peak P≥6%, PMS≥6%, TPMS before AVC); Type 4 (Peak P≥6%, PMS≥6%, TPMS after AVC); Type 5 (Peak P<6%, PMS≥6%, TPMS first third of systole); Type 6 (Peak P<6%, PMS<6%); and Type 7 (Peak P≥6%, PMS<6%). The longitudinal curve score index (LCSI) was obtained (sum of LSC type/18 segments).


Results
A total of seven types of LSC were identified. In the healthy subjects, LSC Type 1 (T1) and Type 2 (T2) were the most frequent. Type 3 (T3) and Type 4 (T4) were found in insignificant percentages while Type 5 (T5), Type 6 (T6), and Type 7 (T7) were not identified. When analyzed for the entire population, LSCI correlated strongly with WMSI (r=0.83, p<0.01).


Conclusions
Analysis of LSC may provide a substantial support to visual assessment of regional LV function and the LCSI represents an index that is highly reproducible, independent of the examiner’s experience.

Background
Two-dimensional speckle-tracking echocardiography (2D-STE) provides a quantitative tool to evaluate LV function at the regional level. The purpose...

Classification of longitudinal strain curves measured by speckle-tracking echocardiography in normal and pathological myocardial segments

Article Category: Original Article

Publié en ligne: 26 déc. 2023

Pages: 141 - 146

DOI: https://doi.org/10.2478/rjc-2023-0031

Mots clés
speckle tracking echocardiography, longitudinal strain, segmental strain

© 2023 Oana Mirea et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Classification of longitudinal strain curves measured by speckle-tracking echocardiography in normal and pathological myocardial segments

Article Category: Original Article

Publié en ligne: 26 déc. 2023

Pages: 141 - 146

DOI: https://doi.org/10.2478/rjc-2023-0031

Mots clésspeckle tracking echocardiography, longitudinal strain, segmental strain

© 2023 Oana Mirea et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Mots clés
speckle tracking echocardiography, longitudinal strain, segmental strain