Atrial compartment operation for chronic AF can lead to delayed left atrial activation and subsequent impairment of cardiac performance despite successful conversion to sinus rhythm.
May impair hemodynamics via delayed LA activation after atrial compartment operation; hypothesis-generating for interatrial synchrony in AF surgery.
In the presence of a normal atrial systole and optimal AV delay, atrial kick contributes to a significant fraction of the stroke volume. This atrial contribution may be lost during atrial asystole or mismatch in the timing of atrial and ventricular contraction. A patient received atrial compartment operation for his chronic AF. Although the AF was successfully converted to sinus rhythm, the conduction from the right to left atrium was markedly delayed so that the left atrial and ventricular activations occurred almost simultaneously. This delay in left atrial activation resulted in impaired cardiac performance.
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Lo et al. (1999) studied this question.
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