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Ann Thorac Surg 1995;60:425
© 1995 The Society of Thoracic Surgeons

Invited Commentary

Invited Commentary

Alden H. Harken, MD

Department of Surgery, University of Colorado Health Sciences Center, 4200 E Ninth Ave, Box C-305, Denver, CO 80262

The first 20% of the full text of this article appears below.

See also page 422.

All cardiac dysrhythmias are due to (1) enhanced automaticity, (2) reentry, or (3) both. Automaticity is the inherent capacity of cardiac conduction tissue to depolarize spontaneously (phase IV depolarization) until it reaches ``threshold'' and then ``fires.'' Hypokalemia, digitoxicity, and local myocardial ischemia are the usual suspects when a surgeon confronts a surgical intensive care unit patient with multifocal ventricular ectopy. Intuitively, muscle distal to a total coronary occlusion should die. It . . . [Full Text of this Article]


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Ann. Thorac. Surg. 1995 60: 422-425. [Abstract] [Full Text]





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