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  • Title: New observations on atrial fibrillation before and after surgical treatment in patients with the Wolff-Parkinson-White syndrome.
    Author: Chen PS, Pressley JC, Tang AS, Packer DL, Gallagher JJ, Prystowsky EN.
    Journal: J Am Coll Cardiol; 1992 Apr; 19(5):974-81. PubMed ID: 1552122.
    Abstract:
    The records of 342 patients who received surgical treatment for the Wolff-Parkinson-White syndrome between 1968 and 1986 were reviewed to evaluate the characteristics of atrial fibrillation. The patients were classified into two groups according to the presence (n = 166) or absence (n = 176) of documented episodes of atrial fibrillation preoperatively. The mean follow-up duration was 6 years (range 2 to 20). As compared with reports based on smaller patient groups and shorter follow-up, the study revealed several new findings. 1) During follow-up, nine patients in the atrial fibrillation group developed recurrent atrial fibrillation after a successful operation; five of these nine patients did not have associated heart disease. 2) All three patients with a history of atrial fibrillation and an accessory pathway conducting in the anterograde direction only had a successful surgical procedure and no postoperative atrial fibrillation. 3) The cycle length of atrioventricular (AV) reciprocating tachycardia was significantly shorter in the atrial fibrillation group (304 +/- 42 ms, mean +/- SD) than in the no-atrial fibrillation group (321 +/- 54 ms, p less than 0.005), and the cycle length of AV reciprocating tachycardia that degenerated into atrial fibrillation (289 +/- 26 ms) was shorter than that for the AV reciprocating tachycardia without subsequent atrial fibrillation (316 +/- 51 ms, p less than 0.005). 4) Sustained atrial fibrillation was induced in 30% of patients without a history of atrial fibrillation. 5) Atrial fibrillation occurred in four patients with an accessory pathway that conducted only in the retrograde direction.(ABSTRACT TRUNCATED AT 250 WORDS)
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