Differential impact of short periods of rapid atrial pacing on left and right atrial mechanical function
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چکیده
منابع مشابه
Differential impact of short periods of rapid atrial pacing on left and right atrial mechanical function.
Current techniques to describe atrial function are limited by their load dependency and hence do not accurately reflect intrinsic mechanical properties. To assess the impact of atrial fibrillation on atrial function, combined pressure-volume relationships (PVR) measured by conductance catheters were used to evaluate the right (RA) and left (LA) atrium in 12 isoflurane-anesthetized pigs. Biatria...
متن کاملShort-term rapid right atrial pacing induces left atrial mechanical and anatomical remodeling in a canine model
Objective The underlying mechanisms responsible for both electrical and mechanical remodeling of the atrium after cardioversion of atrial tachyarrhythmias may be similar, but they are still incompletely understood, and whether the changes in atrial myocardium structure after short-term rapid atrial activation is the basis for this remodeling is unknown. We aimed to investigate atrial mechanical...
متن کاملThe Effects Of Short Time Right Ventricular Pacing On Left Atrial Mechanical Functions
OBJECTIVES Left atrium (LA) plays an important role in left ventricular filling. It is well known that right ventricular apical pacing has unfavorable effects on ventricular systolic and diastolic performance. The aim of this study is to evaluate the LA mechanical functions with 2D echocardiography in patients with a permanent pacemaker after short time ventricular pacing. DESIGN Echocardiogr...
متن کاملImpact of Right Ventricular Apical Pacing and Its Frequency on Left Atrial Function
BACKGROUND Right ventricular apical (RVA) pacing induces left ventricular (LV) dyssynchrony, increases the risk of persistent atrial fibrillation in the long term. The aim was to investigate the effects of RVA pacing on left atrial (LA) function, which are unknown. METHODS Echocardiographic evaluation including LV dyssynchrony based on conventional Doppler, tissue Doppler imaging and speckle ...
متن کاملEchocardiographic [correction of Ehocardiographic] evaluation of regional left atrial function after rapid atrial pacing.
Rapid regular atrial pacing (RAP) produces changes in atrial function similar to those caused by atrial fibrillation in animal models. Left atrial appendage (LAA) function represents regional atrial function. The aim of our study was to investigate the influence of RAP on left atrial regional function and to evaluate the reversibility of changes after termination of pacing in a canine model. Ei...
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ژورنال
عنوان ژورنال: American Journal of Physiology-Heart and Circulatory Physiology
سال: 2012
ISSN: 0363-6135,1522-1539
DOI: 10.1152/ajpheart.01170.2011