Jun 1, 1977

The inside-out electrocardiographic stress test: a view from the left ventricular cavity

R N MacAlpin, W R Cabeen


A new method is described for measuring the unipolar left ventricular cavitary electrogram by means of a standard pigtail ventriculography catheter. Experiences with this technique in 30 patients are described with particular reference to changes in the S-T segment of the cavitary electrogram during cardiac stress by atrial pacing. This method allows convenient recording of His bundle potentials from the left ventricular outflow tract in most patients.

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Mentioned in this Paper

Left Ventricular Structure
Left Bundle Branch of His
Cardiac Catheterization Procedures
Exercise Stress Test
Angina Pectoris
Cardiac Conduction System
Cardiac Ventriculography
Bundle of His
Cerebral Ventriculography
Entire Outflow Tract of Left Ventricle

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