Atrial interaction in the form of 'cross talk' in patients with ventricular outflow tract obstruction
Identifieur interne : 000223 ( Main/Exploration ); précédent : 000222; suivant : 000224Atrial interaction in the form of 'cross talk' in patients with ventricular outflow tract obstruction
Auteurs : Mark Henein [Suède] ; Yat-Yin Lam [Hong Kong] ; Anders Waldenstöm [Hong Kong] ; Michael Y. Henein [Suède]Source :
- International journal of cardiology [ 0167-5273 ] ; 2011.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Homme.
English descriptors
- KwdEn :
Abstract
Background: The Bernheim 'a' wave in the jugular venous pulse of patients with left ventricular hypertrophy has been shown to reflect accentuated right atrial activity. Objective: To study possible atrial interaction in patients with right and left ventricular outflow tract obstruction due to significant pulmonary (PS) and aortic valvular stenosis (AS) respectively. Methods: We studied 41 PS patients (age 36 ±10 year) and 41 AS patients (age 35 ±12 year) and their results were compared with those of 27 controls (age 30 ± 7 year). RV and LV filling were recorded by conventional PW Doppler. Biventricular segmental function was studied using the PW tissue Doppler imaging (TDI) and M-mode techniques. Results: The 2 patient groups had similar degree of ventricular outflow tract obstruction. Long axis function was impaired while global systolic function was preserved in the pressure-overloaded ventricle. Patients had higher peak late filling (A wave) and TDI late diastolic (Aa) velocities recorded in the disease-free ventricles despite having similar peak early filling velocities (E wave), E wave deceleration time and E/Ea ratios were not different from controls (p>0.05 for all). Such accentuation of atrial activity (A wave) was moderately correlated with the degree of contralateral ventricular outflow tract obstruction (p<0.001 for both). Conclusions: Long axis function is more sensitive than global function in revealing myocardial dysfunction in the pressure-overloaded ventricles. The increased contralateral atrial systolic activity suggests an evidence for atrial interaction in the form of 'cross talk'.
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Henein</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Heart Centre and Department of Public Health and Clinical Medicine, Umeå University</s1><s3>SWE</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Suède</country><wicri:noRegion>Heart Centre and Department of Public Health and Clinical Medicine, Umeå University</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">International journal of cardiology</title><title level="j" type="abbreviated">Int. j. cardiol.</title><idno type="ISSN">0167-5273</idno><imprint><date when="2011">2011</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">International journal of cardiology</title><title level="j" type="abbreviated">Int. j. cardiol.</title><idno type="ISSN">0167-5273</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aortic stenosis</term><term>Cardiology</term><term>Cardiovascular disease</term><term>Human</term><term>Interaction</term><term>Outflow obstruction</term><term>Patient</term><term>Pulmonary stenosis</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Pathologie de l'appareil circulatoire</term><term>Interaction</term><term>Homme</term><term>Malade</term><term>Obstacle éjection</term><term>Sténose aortique</term><term>Sténose pulmonaire</term><term>Cardiologie</term><term>Rétrécissement valvule aortique</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Homme</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Background: The Bernheim 'a' wave in the jugular venous pulse of patients with left ventricular hypertrophy has been shown to reflect accentuated right atrial activity. Objective: To study possible atrial interaction in patients with right and left ventricular outflow tract obstruction due to significant pulmonary (PS) and aortic valvular stenosis (AS) respectively. Methods: We studied 41 PS patients (age 36 ±10 year) and 41 AS patients (age 35 ±12 year) and their results were compared with those of 27 controls (age 30 ± 7 year). RV and LV filling were recorded by conventional PW Doppler. Biventricular segmental function was studied using the PW tissue Doppler imaging (TDI) and M-mode techniques. Results: The 2 patient groups had similar degree of ventricular outflow tract obstruction. Long axis function was impaired while global systolic function was preserved in the pressure-overloaded ventricle. Patients had higher peak late filling (A wave) and TDI late diastolic (Aa) velocities recorded in the disease-free ventricles despite having similar peak early filling velocities (E wave), E wave deceleration time and E/Ea ratios were not different from controls (p>0.05 for all). Such accentuation of atrial activity (A wave) was moderately correlated with the degree of contralateral ventricular outflow tract obstruction (p<0.001 for both). Conclusions: Long axis function is more sensitive than global function in revealing myocardial dysfunction in the pressure-overloaded ventricles. The increased contralateral atrial systolic activity suggests an evidence for atrial interaction in the form of 'cross talk'.</div></front></TEI><affiliations><list><country><li>Hong Kong</li><li>Suède</li></country><settlement><li>Sha Tin</li></settlement><orgName><li>Université chinoise de Hong Kong</li></orgName></list><tree><country name="Suède"><noRegion><name sortKey="Henein, Mark" sort="Henein, Mark" uniqKey="Henein M" first="Mark" last="Henein">Mark Henein</name></noRegion><name sortKey="Henein, Michael Y" sort="Henein, Michael Y" uniqKey="Henein M" first="Michael Y." last="Henein">Michael Y. Henein</name></country><country name="Hong Kong"><noRegion><name sortKey="Lam, Yat Yin" sort="Lam, Yat Yin" uniqKey="Lam Y" first="Yat-Yin" last="Lam">Yat-Yin Lam</name></noRegion><name sortKey="Waldenstom, Anders" sort="Waldenstom, Anders" uniqKey="Waldenstom A" first="Anders" last="Waldenstöm">Anders Waldenstöm</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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