Tall R Waves in Precordial Electrocardiogram Leads

Tall Upright T Waves in the Precordial Leads By IVAN

One hundred ten cases of T waves more than 10 mm in height in the precordial leads were studied. The T waves were wide in ischemic heart disease and thin and peaked in uremia. Marked changes in the ventricular gradient were obselved in ischemic heart disease and in uremia with hyperkalemia. In other conditions, the changes in the ventricular gradient were of a lesser degree. In cases of left ve...

Tall upright T waves in the precordial leads.

One hundred ten cases of T waves more than 10 mm in height in the precordial leads were studied. The T waves were wide in ischemic heart disease and thin and peaked in uremia. Marked changes in the ventricular gradient were obselved in ischemic heart disease and in uremia with hyperkalemia. In other conditions, the changes in the ventricular gradient were of a lesser degree. In cases of left ve...

Tall R waves in leads V(1) to V(3).

Secondary R waves in right precordial leads in normal persons and in patients with cardiac disease.

Secondary R waves in leads V1 or V3R are definitely abnormal if the primiary R wave is high for the age group even though the R' is small; if the secondary R wave is more than 6 nmm.; or if the R'/S ratio exceeds 1. Other patterns may be found both in patients with heart disease and in normal subjects. In the abnormal cases, the QRS changes persist in leads taken below but in line with V1 and V...

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...