open access

Vol 70, No 9 (2012)
Original articles
Published online: 2012-09-20
Submitted: 2012-12-28
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Effects of biventricular pacing on right ventricular function assessed by standard echocardiography

Aleksander Kusiak, Jerzy Wiliński, Wiktoria Wojciechowska, Marek Jastrzębski, Tomasz Sondej, Bogumiła Bacior, Małgorzata Kloch−Badełek, Danuta Czarnecka
Kardiol Pol 2012;70(9):883-888.

open access

Vol 70, No 9 (2012)
Original articles
Published online: 2012-09-20
Submitted: 2012-12-28

Abstract

Background and aim: The aim of this study was to evaluate the short term effect of cardiac resynchronisation therapy (CRT) on right ventricular (RV) function assessed by standard echocardiography.
Methods: Data from 57 patients (54 men, 95%; three women, 5%), aged 66.4 ± 8.7 years with heart failure (HF) was analysed. All patients were in NYHA III–IV functional classes, despite optimal pharmacological treatment according to the current guidelines, had left ventricular ejection fraction ≤ 35% and QRS complex ≥ 120 ms in a standard electrocardiogram. At baseline and three months after CRT implantation the patients’ histories were taken, an anthropometrical examination was made, laboratory tests including the level of NT-proBNP and electrocardiogram were performed, and echocardiographic examination was extended by tissue Doppler imaging techniques and complex RV evaluation.
Results: Three months after CRT implantation in the whole study group, the average NYHA functional class had decreased from 3.11 ± 0.28 to 2.25 ± 0.68 (p < 0.001), and the six-minute walk test distance had increased from 298.04 ± 107.42 m to 373.12 ± 127.15 m (p < 0.001). CRT improved RV systolic function in the whole study group. Tricuspid annular plane systolic excursion had increased from 13.95 ± 2.80 to 15.79 ± 2.33 mm (p < 0.001), and so likewise had systolic excursion velocity (S′), which rose from 8.84 ± 3.45 to 11.00 ± 3.43 cm/s (p < 0.001). Tricuspid regurgitation grade decreased from 2.02 ± 0.95 to 1.86 ± 0.91 (p = 0.013). RV systolic pressure decreased from 31.07 ± 20.43 to 27.75 ± 17.35 mm Hg (p < 0.001). RV fractional area change rose from 31.35 ± 10.30% to 35.40 ± 10.51% (p < 0.001).
Conclusions: This study showed that CRT improved RV systolic function evaluated with parameters assessed in standard echocardiographic examination three months after therapy initiation. The observed improvement was consistent among all applied echocardiographic parameters reflecting RV systolic function.

Abstract

Background and aim: The aim of this study was to evaluate the short term effect of cardiac resynchronisation therapy (CRT) on right ventricular (RV) function assessed by standard echocardiography.
Methods: Data from 57 patients (54 men, 95%; three women, 5%), aged 66.4 ± 8.7 years with heart failure (HF) was analysed. All patients were in NYHA III–IV functional classes, despite optimal pharmacological treatment according to the current guidelines, had left ventricular ejection fraction ≤ 35% and QRS complex ≥ 120 ms in a standard electrocardiogram. At baseline and three months after CRT implantation the patients’ histories were taken, an anthropometrical examination was made, laboratory tests including the level of NT-proBNP and electrocardiogram were performed, and echocardiographic examination was extended by tissue Doppler imaging techniques and complex RV evaluation.
Results: Three months after CRT implantation in the whole study group, the average NYHA functional class had decreased from 3.11 ± 0.28 to 2.25 ± 0.68 (p < 0.001), and the six-minute walk test distance had increased from 298.04 ± 107.42 m to 373.12 ± 127.15 m (p < 0.001). CRT improved RV systolic function in the whole study group. Tricuspid annular plane systolic excursion had increased from 13.95 ± 2.80 to 15.79 ± 2.33 mm (p < 0.001), and so likewise had systolic excursion velocity (S′), which rose from 8.84 ± 3.45 to 11.00 ± 3.43 cm/s (p < 0.001). Tricuspid regurgitation grade decreased from 2.02 ± 0.95 to 1.86 ± 0.91 (p = 0.013). RV systolic pressure decreased from 31.07 ± 20.43 to 27.75 ± 17.35 mm Hg (p < 0.001). RV fractional area change rose from 31.35 ± 10.30% to 35.40 ± 10.51% (p < 0.001).
Conclusions: This study showed that CRT improved RV systolic function evaluated with parameters assessed in standard echocardiographic examination three months after therapy initiation. The observed improvement was consistent among all applied echocardiographic parameters reflecting RV systolic function.
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Keywords

right ventricle; cardiac resynchronisation therapy; echocardiography; heart failure

About this article
Title

Effects of biventricular pacing on right ventricular function assessed by standard echocardiography

Journal

Kardiologia Polska (Polish Heart Journal)

Issue

Vol 70, No 9 (2012)

Pages

883-888

Published online

2012-09-20

Bibliographic record

Kardiol Pol 2012;70(9):883-888.

Keywords

right ventricle
cardiac resynchronisation therapy
echocardiography
heart failure

Authors

Aleksander Kusiak
Jerzy Wiliński
Wiktoria Wojciechowska
Marek Jastrzębski
Tomasz Sondej
Bogumiła Bacior
Małgorzata Kloch−Badełek
Danuta Czarnecka

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