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(Chest. 1973;64:780-781.)
© 1973 American College of Chest Physicians

Wolff-Parkinson-White Syndrome: Alterations in Ventricular Activation Induced by Changes in Serum Potassium

Leonardo Chait M.D.1 and William J. Mandel M.D.2

1 Department of Cardiology, Cedars-Sinai Medical Center; Department of Medicine, University of California, Los Angeles
2 Milly Factor clinical investigator of the Western Cardiac Foundation

Electrocardiographic observations obtained in a 45-year-old woman with chronic renal disease and intermittent Wolff-Parkinson-White syndrome are presented. Modest changes in serum potassium during hemodialysis were associated with marked changes in standard electrocardiographic records. When the patient was normokalemic, a classic type A Wolff-Parkinson-White electrocardiogram was noted. However, when the potassium level exceeded 5.7 mEq/liter, the delta vector disappeared and the QRS had a normal morphology. It is suggested that acute alterations in serum potassium may prove a means of establishing normal AV conduction in patients with the Wolff-Parkinson-White syndrome.






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Copyright © 1973 by the American College of Chest Physicians.