Causes of hyperdiagnosis of myocardial infarct in Wolff-Parkinson-White syndrome
Pashkov, V.V.
Kardiologiia 17(4): 141-142
1977
ISSN/ISBN: 0022-9040 PMID: 886713 Document Number: 123880
The clinical symptoms of 85 patients with WPW [Wolff-Parkinson-White] syndrome, 43 of which were diagnosed as type B, 18 as type A and 24 as transient syndrome of premature stimulation of the ventricles, are discussed. Suspected antesystole should be subjected to differential analysis of ECG indices such as the P-R interval, P waves, .DELTA.-wave and P-I interval. Vector analysis of the ECG with supplemental leads V2-3 attached to the 3rd intracostal region aids in differentiation of the .delta.-wave in WPW syndrome and the Q wave in myocardial infarction. Displacement of the ST segment in antesystole should not be regarded as a symptom of cardiac insufficiency. For differential diagnostic purposes it is productive to use probes with forced inhalation and exhalation plus Ajmaline or Inderal.