ROBERT BADGETT, M.D.
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To the editor: Both the difficulty of accurately diagnosing the cause of wide complex tachycardia and the consequences of misdiagnosis were well shown in the recent article by Stewart and colleagues ( 1 ).
In the past, many bedside clues have been advanced to aid in the differentiation of the cause, but study has shown only electrical evidence of atrioventricular dissociation to be reliable. Forty-five (1) to sixty-eight (2) percent of episodes of wide complex tachycardia of ventricular origin have yielded electrical evidence of atrioventricular dissociation on retrospective study. Two pressing questions are pertinent to the immediate bedside diagnosis: What
BADGETT R. Wide Complex Tachycardia. Ann Intern Med. ;105:623–624. doi: 10.7326/0003-4819-105-4-623_2
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Published: Ann Intern Med. 1986;105(4):623-624.
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