The precordial electrocardiogram

The precordial electrocardiogram during exercise.

C ONTINUOUS recording of the precordial electrocardiogram during vigo-ous exereise has been tested in 150 persons through the use of a new lead system, a new method of electrode attachment, and special types of electrodes and electrode paste. This technic has resulted in tracings that are almost free of skeletal muscle potentials and baseline shift in subjects performing the Master's 2-step tes...

Precordial T wave Inversions on Electrocardiogram

T wave inversions on an electrocardiogram (EKG) can manifest from any process that result in a relative delay in regional ventricular repolarization. The differential diagnosis of right precordial T wave inversions, leads V1-V3, include myocardial ischemia, a normal athlete’s heart, arrhythmogenic right ventricular dysplasia, and pulmonary embolism amongst others. The case discussed below is of...

The precordial electrocardiogram in incomplete right bundle branch block.

I N 1917 Rothberger and Winterberg’ published an electrocardiographic record which depicts the gradual clearing of a defect in conduction affecting the right branch of the bundle of His. An attempt to cut this structure in the course of an experiment on a dog blocked it only temporarily. Fortunately, one of the tracings taken spanned the period during which the injured bundle gradually recovere...

Characteristics of the unipolar precordial electrocardiogram in normal infants.

Analysis of the effects of the continuous electrode paste band on precordial leads of the electrocardiogram.

OBJECTIVE - To determine if the application of a continuous electrode paste band on precordial leads results in alteration of the electrocardiographic tracing as compared with an adequate amount of electrode paste, and if the former condition does not cause uniform morphologies from V1 to V6. METHODS - The amplitude and morphology of the electrocardiographic waves on the precordial leads in ele...