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- W2891915452 abstract "Introduction . Strain and strain rate (SR) are techniques, which provide local information on myocardial deformation. The aim of the study was to assess the usefulness of strain and SR measurement in cardiac resynchronization therapy (CRT) response in chronic heart failure (CHF) patients. Materials and methods . The study included 35 CHF patients with QRS complex duration ≥ 120ms with LBBB morphology. Biochemical and clinical parameters were assessed before and after six months of CRT. TTE classical and tissue Doppler echocardiography parameters (longitudinal peak systolic strain — LPS and SR for basal segment of intraventricular septum and lateral wall) were evaluated. Results . Twenty-two patients (62.8%) benefited from CRT (the responders) and revealed improvement in septal and lateral LPS in the 6-month observation [-7.1 (-5.2– -11.1) vs -12.1 (-8.7– -14)%, p = 0.002; - 10.4 (-6.1– -17.6) vs - 13.8 (-8.9 – -17.8)%, p = 0.03; respectively]. Six months after CRT, the responders were characterised by higher increase in septal LPS comparing to the nonresponders (-4.6 ± 6.1 vs -2.4 ± 3.9%, p = 0.045). Septal LPS changes correlated positively with baseline cardiopulmonary exercise testing (CPET) parameters: peak oxygen uptake (r = 0.6, p = 0.004), peak carbon dioxide excretion (r = 0.62, p = 0.002) and negatively with VE/VCO2 slope (r = -0.5, p = 0.037). Conclusions . LV regional LPS appears to be a good parameter reflecting the improvement of clinical status in patients treated with CRT. The responders had better improvement of septal LPS, therefore positive response to this therapy may be related to the improvement of septal contractility." @default.
- W2891915452 created "2018-09-27" @default.
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- W2891915452 date "2018-09-12" @default.
- W2891915452 modified "2023-10-16" @default.
- W2891915452 title "Związek zmian regionalnego odkształcenia podłużnego miokardium z odpowiedzią na terapię resynchronizującą serca u pacjentów z dysfunkcją skurczową lewej komory i blokiem lewej odnogi pęczka Hisa" @default.
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- W2891915452 doi "https://doi.org/10.5603/fc.2018.0066" @default.
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