Latent Heart Block and Mitral Stenosis

Latent Heart Block.

I have used the term "Latent Heart Block" to indicate a prolonged P-R interval without any manifest degree of block, such as dropped beats or 2 :1 block. This paper is a clinical study of a series of such cases, mainly from the point of view of the xtiology and significance of the condition. One might guess that latent heart block would be found in the same cases as, but at an earlier stage tha...

Phonocardiograms of auricular murmurs from a case with mitral stenosis and heart block.

It is well known that an auricular sound can sometimes be recognized by means of the stethoscope or phonocardiogram. In some instances it can be shown that the so-called first heart sound consists of a fusion of an auricular sound with a ventricular sound, and this may be evident in cases with prolongation of the P-R interval. This, however, is generally not easily recognized; otherwise there s...

MITRAL STENOSIS COMPLICATED BY RENAL ARTERY EMBOLISM

Six patients with mitral stenosis complicated by renal artery embolism studied prospectively are presented. In five patients there was unilateral and in one patient bilateral renal artery involvement. The diagnosis was confirmed by intravenous pyelography, retrograde pyelography, renal angiography, renal scan or a combination of these. All had atrial fibrillation, proteinuria and elevated ...

Remission of symptoms in mitral stenosis due to complete heart block.

[Mitral stenosis].

Phonocardiography is-often more valuable than electrocardiography in timing mechanical events in the cardiac cycle. This study shows that the opening and closing of the mitral valve are related to the length of the previous heart cycle as demonstrated by the variations occuring in aluricular fibrillation. These variations in valve action are controlled by the pressure gradient between left auri...