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- W2348303432 abstract "Objective To evaluate the changes characteristics of left atrial (LA) function in patients with atrial fibrillation (AF) after cardioversion. Methods The initial study population included 96 patients with AF.According to cardioversion pattern the patients were divided into spontaneous cardioversion to sinus rhythm (24 patients), random cardioversion with drugs (40 patients) and cardioversion with direct current (DC) shock (32 patients).Left atrial size and volume were evaluated by echocardiography,LA passive and active emptying volumes were calculated,and LA function was assessed.Results The left atrium was dilated in all patients during AF.The size of the left atrium decreased after restoration of sinus rhythm in 100% of patients with spontaneous cardioversion to sinus rhythm,in 74% of patients reverted with durgs and 52% of patients reverted with DC shock. Left atrial ejection force (LAEF) of 62 patients with a normal mechanical atrial function was higher than that of 34 patients with reduced atrial function,it was associated a marked reduction in LA size after restoration of sinus rhythm.An inverse relation between LA diameter or LA volumes and LA ejection force was observed in patients with LAEF 7dynes ( r =-0.72 or r =-0.76, P 0.001).The LA active emptying fraction was lower,but the conduit volume was increased.Conclusions The delay in the restoration of mechanical atrial function after cardioversion was associated with a persistence of LA dilation." @default.
- W2348303432 created "2016-06-24" @default.
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- W2348303432 date "2003-01-01" @default.
- W2348303432 modified "2023-09-22" @default.
- W2348303432 title "Study on changes of left atrial function in patients with atrial fibrillation before and after cardioversion by echocardiography" @default.
- W2348303432 hasPublicationYear "2003" @default.
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