Left atrial function after electrical conversion to sinus rhythm.
Left atrial function after electrical conversion to sinus rhythm.
复制标题
电转窦性心律后的左心房功能。
作者：
H. Ikram;P. Nixon;T. Arcan
Atrial fibrillation is undesirable because it reduces the efficiency of the heart, particularly the diseased heart (Kory and Meneely, 1951) and gives rise to systemic or pulmonary embolism in about one-third of the cases (Goldman, 1960). The recent introduction of the use of the synchronized directcurrent shock (Lown, Amarasingham, and Neuman, 1962) has simplified the restoration of sinus rhythm, but little is known about the return of the mechanical activity to the atrium. Bramwell and Jones (1944) have suggested that an effective left atrial contraction may be absent in sinus rhythm, and cardiac catheterization studies have shown that the return of a P wave to the electrocardiogram may not be accompanied by the restoration of detectable mechanical activity to the left atrium (Braunwald, 1964; Logan et al., 1965). It is important to know if or when mechanical activity returns to the atrium; its failure to return may be a cause of continuing disability, and its delayed return may be associated with late embolism. Left heart catheterization is not a technique that is suitable for repeated use after conversion. This paper describes a study of the left atrial contraction, by a simple bedside technique, in patients recently converted to sinus rhythm.
