open access

Vol 16, No 6 (2009)
Original articles
Published online: 2009-11-19
Get Citation

Relationship between echocardiographic parameters and exercise test duration in patients after myocardial infarction

Karina Wierzbowska-Drabik, Maria Krzemińska-Pakuła, Michał Plewka, Jarosław Drożdż, Małgorzata Kurpesa, Ewa Trzos, Tomasz Rechciński, Łukasz Chrzanowski, Jarosław D. Kasprzak
Cardiol J 2009;16(6):507-513.

open access

Vol 16, No 6 (2009)
Original articles
Published online: 2009-11-19

Abstract

Background: The interdependence between echocardiographic parameters of left ventricle function, severity of heart failure (HF) and exercise test duration has not been thoroughly examined.
Methods: We compared echocardiographic data in patients after myocardial infarction divided according to NYHA class to mild (class I and II, group 1 = 24 subjects) and advanced HF group (III and IV, group 2 = 36) and assessed their correlation with exercise duration (ED) in a symptom-limited treadmill test. Then we tried to determine independent predictors of ED.
Results: The group with advanced HF had lower left ventricle ejection fraction, shorter duration and deceleration times of both mitral inflow waves (Et and At, Edt and Adt) and higher E/A ratio (1.4 ± 1.1 vs. 0.9 ± 0.4; p < 0.05) with more frequent restriction and pseudonormalization pattern (56% vs. 12%). Also early wave propagation (21 ± 7 vs. 29 ± 11 cm/s; p < 0.001) and all tissue Doppler velocities were lower, but ratio of early wave peak velocity to early diastolic velocity of mitral annulus was higher (E/E’ 10.5 ± 5 vs. 6.1 ± 1.3 for velocity ratio; p < 0.001) in subjects with more severe clinical symptoms. Significant negative correlation with ED was observed for difference between duration of pulmonary vein atrial reversal flow and atrial wave of mitral inflow (∆At; r = –0.54) and for E/E’ ratio (r = –0.48), the highest positive correlation for left ventricular ejection fraction and duration of mitral inflow atrial phase (EF; r = 0.48, At; r = 0.46). In multivariate stepwise regression analysis two independent predictors of ED were identified: age and ∆At (Art–At).
Conclusions: Diastolic parameters showing the strongest correlation with ED (∆At and E/E’) are connected with restrictive left ventricle physiology. The only independent predictors of exercise duration in patients after myocardial infarction were: age and ∆At.

Abstract

Background: The interdependence between echocardiographic parameters of left ventricle function, severity of heart failure (HF) and exercise test duration has not been thoroughly examined.
Methods: We compared echocardiographic data in patients after myocardial infarction divided according to NYHA class to mild (class I and II, group 1 = 24 subjects) and advanced HF group (III and IV, group 2 = 36) and assessed their correlation with exercise duration (ED) in a symptom-limited treadmill test. Then we tried to determine independent predictors of ED.
Results: The group with advanced HF had lower left ventricle ejection fraction, shorter duration and deceleration times of both mitral inflow waves (Et and At, Edt and Adt) and higher E/A ratio (1.4 ± 1.1 vs. 0.9 ± 0.4; p < 0.05) with more frequent restriction and pseudonormalization pattern (56% vs. 12%). Also early wave propagation (21 ± 7 vs. 29 ± 11 cm/s; p < 0.001) and all tissue Doppler velocities were lower, but ratio of early wave peak velocity to early diastolic velocity of mitral annulus was higher (E/E’ 10.5 ± 5 vs. 6.1 ± 1.3 for velocity ratio; p < 0.001) in subjects with more severe clinical symptoms. Significant negative correlation with ED was observed for difference between duration of pulmonary vein atrial reversal flow and atrial wave of mitral inflow (∆At; r = –0.54) and for E/E’ ratio (r = –0.48), the highest positive correlation for left ventricular ejection fraction and duration of mitral inflow atrial phase (EF; r = 0.48, At; r = 0.46). In multivariate stepwise regression analysis two independent predictors of ED were identified: age and ∆At (Art–At).
Conclusions: Diastolic parameters showing the strongest correlation with ED (∆At and E/E’) are connected with restrictive left ventricle physiology. The only independent predictors of exercise duration in patients after myocardial infarction were: age and ∆At.
Get Citation

Keywords

echocardiography; diastolic dysfunction; exercise test duration; heart failure

About this article
Title

Relationship between echocardiographic parameters and exercise test duration in patients after myocardial infarction

Journal

Cardiology Journal

Issue

Vol 16, No 6 (2009)

Pages

507-513

Published online

2009-11-19

Bibliographic record

Cardiol J 2009;16(6):507-513.

Keywords

echocardiography
diastolic dysfunction
exercise test duration
heart failure

Authors

Karina Wierzbowska-Drabik
Maria Krzemińska-Pakuła
Michał Plewka
Jarosław Drożdż
Małgorzata Kurpesa
Ewa Trzos
Tomasz Rechciński
Łukasz Chrzanowski
Jarosław D. Kasprzak

Important: This website uses cookies. More >>

The cookies allow us to identify your computer and find out details about your last visit. They remembering whether you've visited the site before, so that you remain logged in - or to help us work out how many new website visitors we get each month. Most internet browsers accept cookies automatically, but you can change the settings of your browser to erase cookies or prevent automatic acceptance if you prefer.

By "Via Medica sp. z o.o." sp.k., ul. Świętokrzyska 73, 80–180 Gdańsk, Poland
tel.:+48 58 320 94 94, fax:+48 58 320 94 60, e-mail: viamedica@viamedica.pl