Abstract
The author studied the condition of the right ventricular hypertrophy by comparing the electrocardiography and the heart of 135 Tutopsy cases of serious pulmonary tuberculosis.
To determine the right ventricular hypertrophy by means of the heart of autopsy, the most important factor is that the right ventricular wall as being 5mm in thickness. Also, to determine the dilatation, measuring the width of the ventricular septum transectionally those over 45mm were determined as having a dilatation. By this and the thickness of the right ventricular wall, the right ventricular hypertrophy can be presented vertically and quantitively.
In pulmonary tuberculosis the transposition of the heart occurs under many conditions. Those, that are based on the height of the QRS complex as the criterion for the right ventricular hypertrophy, receive quite an influence on the QRS altitude because of the transposition. There are many difficult points when using this method for judgement. Here, the author prepared a standard according to the QRS complex without measuring the QRS altitude.
1) Limb lead that shows right axis deviation.
2) Pulmonary P.
3) S pattern.
4) QR form, qR form of aVR.
5) Flatness or a drop of the ST T in II, III, aVF.
6) Incomplete right bundle branch block (V1).
7) QRS rising in V4R, V3R.
8) Presence of a deeper S in V5, V6.
According to this standard those showing 4 or more views are judgedas positive while those with 2 or less views as normal. From this criterion the specificity is 100%, and the sensitivity 97.4%.
Showing a higher sensitivity and specificity compared from the methods in the past.
