TY - JOUR
T1 - Limitations of the surface electrocardiogram in diagnosis of atrial arrhythmias. Further observations on dissimilar atrial rhythms
AU - Wu, Delon
AU - Denes, Pablo
AU - y Leon, Fernando Amat
AU - Chhablani, Ramesh C.
AU - Rosen, Kenneth M.
N1 - Funding Information:
From the Section of Cardiology, Department of Medicine, Abraham Lincoln School of Medicine, University of Illinois College of Medicine, Chicago, Ill. This study was supported in part by NIH Contract 71-2478 under the Myocardial Infarction Program, National Heart and Lung Institute, National Institutes of Health, Bethesda, Md. Manuscript accepted October 9, 1974.
PY - 1975/7
Y1 - 1975/7
N2 - Electrophysiologic studies with recordings of multiple intracavitary electrograms were performed in two patients with atrial dysrhythmias. In Case 1 the arrhythmic pattern in the surface electrocardiogram resembled atrial flutter. Electrophysiologic studies revealed the arrhythmia to be paroxysmal left atrial tachycardia, with separation of left and right atrial components of the P wave by an isolectric period secondary to marked interatrial conduction delay. In Case 2 the surface electrocardiogram indicated paroxysmal atrial tachycardia with block. Electrophysiologic studies revealed right atrial standstill with atrial inexcitability and two dissimilar rhythms involving the left atrium. The electrocardiograms did not accurately reflect atrial arrhythmias in these two patients and only multiple direct recordings permitted the correct diagnoses. New electrophysiologic observations concerning intraatrial block and dissimilar atrial rhythms are presented.
AB - Electrophysiologic studies with recordings of multiple intracavitary electrograms were performed in two patients with atrial dysrhythmias. In Case 1 the arrhythmic pattern in the surface electrocardiogram resembled atrial flutter. Electrophysiologic studies revealed the arrhythmia to be paroxysmal left atrial tachycardia, with separation of left and right atrial components of the P wave by an isolectric period secondary to marked interatrial conduction delay. In Case 2 the surface electrocardiogram indicated paroxysmal atrial tachycardia with block. Electrophysiologic studies revealed right atrial standstill with atrial inexcitability and two dissimilar rhythms involving the left atrium. The electrocardiograms did not accurately reflect atrial arrhythmias in these two patients and only multiple direct recordings permitted the correct diagnoses. New electrophysiologic observations concerning intraatrial block and dissimilar atrial rhythms are presented.
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U2 - 10.1016/0002-9149(75)90873-5
DO - 10.1016/0002-9149(75)90873-5
M3 - Article
C2 - 1146701
AN - SCOPUS:0016593608
SN - 0002-9149
VL - 36
SP - 91
EP - 97
JO - The American journal of cardiology
JF - The American journal of cardiology
IS - 1
ER -