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

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

Romanian Journal of Cardiology
Volume 33 (2023): Issue 4 (December 2023)
By: Oana Mirea,  Mihaela Berceanu,  Sorina Soldea,  Ionuț Donoiu and  Victor Raicea  
Open Access
|Dec 2023

Figures & Tables

Figure 1

Red quadrant: longitudinal strain curve showing all components: Peak P as initial lengthening; PSS: peak systolic strain as the maximum longitudinal deformation before aortic valve closure (AVC); PMS: peak maximum strain as the maximum longitudinal deformation during the cardiac cycle. A) Type 1 curve; B) Type 2 curve; C) Type 3 curve; D) Type 4 curve; E) Type 5 curve; F) Type 6 curve; G) Type 7 curve.
Red quadrant: longitudinal strain curve showing all components: Peak P as initial lengthening; PSS: peak systolic strain as the maximum longitudinal deformation before aortic valve closure (AVC); PMS: peak maximum strain as the maximum longitudinal deformation during the cardiac cycle. A) Type 1 curve; B) Type 2 curve; C) Type 3 curve; D) Type 4 curve; E) Type 5 curve; F) Type 6 curve; G) Type 7 curve.

Figure 2

Correlation plot between echocardiographic derived WMSI and LSCI.
Correlation plot between echocardiographic derived WMSI and LSCI.

Characteristics of longitudinal strain curves

Peak P (%)PMS (%)TPMS (ms)Characteristics
Type 1 (T1)<6≥6Before AVCNormal segmental activation (Figure 1A)
Type 2 (T2)<6≥6After AVCPost systolic deformation (Figure 1B)
Type 3 (T3)≥6≥6Before AVCISL followed by normal segmental activation (Figure 1 C)
Type 4 (T4)≥6≥6After AVCISL followed by post systolic deformation (Figure 1 D)
Type 5 (T5)<6≥6First third of systoleEarly systolic shortening followed by no active event during systole (Figure 1E)
Type 6 (T6)<6<6-No active event during systole (figure 1F)
Type 7 (T7)≥6<6-Holo-systolic lengthening (Figure 1G)

Anthropometric and conventional two dimensional and Doppler echocardiography measurements

UnitControl group (n=100)Ischemic group (n=50)
Age(years)45±1454±16*
SBP(mmHg)118±14118±18
DBP(mmHg)71±972±9
HR(bpm)66±1367±14
IVSd(mm)8.6±1.710.2±3.2*
PWd(mm)8.7±1.49.2±2.2
LVIDd(mm)47.4±4.857.0±8.5*
LVIDs(mm)30.8 ±5.343.3 ±12.7*
LVMi(g/m2)78.5±22.3116.7±39.7*
LV EDVi(ml/ m2)56±1379±29*
LV ESVi(ml/ m2)21±744±26*
LV EF(%)64±648±14*
LAESVi(ml/ m2)33±843±16*
E wave(m/s)72±1572±19
DTE(ms)185±38203±54
A wave(m/s)46±1360±28*
E/A 1.7±0.51.5±1.0
LV s’(cm/s)10±27±3*
LV e’(cm/s)13±38±4*
LV a’(cm/s)10±37±3*
E/e’ 6±111±6*
TAPSE(mm)23±316±3*

Average PSS and PMS in the two study groups for each LSC type

LSCControl group (n=100)Ischemic group (n=50)
PSSPMSPSSPMS
Type 1-22.4±4.0*-22.6±4.0*-19.0±5.8-19.2±5.8
Type 2-20.2±4.2*-21.8±4.4*-12.2±6.0-14.9±5.8
Type 3---12.3±2.4-12.4±2.3
Type 4-21.7±1.7*-23.8±1.3*-9.4±4.8-13.9±5.3
Type 5---8.1±2.1-9.1±1.9
Type 6---2.9±1.5-3.8±1.5
Type 7---2.3±1.1-3.0±1.2
DOI: https://doi.org/10.2478/rjc-2023-0031 | Journal eISSN: 2734-6382 | Journal ISSN: 1220-658X
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Language: English
Page range: 141 - 146
Published on: Dec 26, 2023
Published by: Romanian Society of Cardiology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
speckle tracking echocardiography,
longitudinal strain,
segmental strain
Related subjects:
Medicine,
Clinical medicine,
Internal medicine,
Cardiology,
Pediatrics and juvenile medicine,
Paediatric cardiology,
Surgery,
Cardiac surgery

© 2023 Oana Mirea, Mihaela Berceanu, Sorina Soldea, Ionuț Donoiu, Victor Raicea, published by Romanian Society of Cardiology
This work is licensed under the Creative Commons Attribution 4.0 License.

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