Norbert Enzer

FATIGUE OF PATIENTS WITH CIRCULATORY INSUFFICIENCY, INVESTIGATED BY MEANS OF THE FUSION FREQUENCY OF FLICKER

Excerpt Patients with circulatory insufficiency from heart disease and hypertension fatigue easily, not only in heavy or moderate muscular work, but also in types of light muscular work, in mental ...

THE STATE OF SENSORY AND MOTOR CENTERS IN PATIENTS WITH HYPOTHYROIDISM

Excerpt INTRODUCTION Increased fatigability and sluggishness are notable complaints and symptoms of patients with endocrine disturbances, particularly in those with a reduced metabolic rate. Since ...

A Comparison of the Diagnostic Value of the Wassermann, Kahn and Micro-Precipitation Tests for Syphilis

Excerpt The diagnosis of syphilis by serological methods has become universal. Indeed, the tendency on the part of clinicians is to rely solely, or almost so, on the findings of the serologist. In ...

AN UNUSUAL CASE OF A-V NODAL RHYTHM WITH VARYING A-V BLOCK

In the human electrocardiogram, A-V block prolongs the P-R interval to values exceeding 02 sec., while nodal rhythm is characterized by P-R intervals ranging from approximately plus 0-12 to minus 0-19 sec. (R-P intervals). The simultaneous occurrence of both A-V block and nodal rhythm may produce P-R intervals within normal range (0d12 to 0-2) ; however, this condition can be recognized by the characteristic retrograde P wave pattern (inversion of P II and P III), as recently shown by Langendorf, Simon, and Katz (1944). As the authors point out, this does not exclude the presence of A-V block with P-R intervals between plus 012 and minus 019. Since delay or even complete blockage of the A-V nodal impulse may occur on its way to the ventricles (antegrade block) as well as to the auricles (retrograde block) (Lewis, 1914; Lewis, White, and Meakins, 1914; Drury, 1924; and Scherf, 1926), any combination of P-R or R-P interval is compatible with the simultaneous existence of A-V block and nodal rhythm. The relation between P and R depends on the site of impulse formation and the site and the degree of the block. It is possible that in partial A-V block the site of impulse formation and that of the block are such that the antegrade impulse to the ventricles arrives simultaneously or earlier than the retrograde impulse to the auricles. This has been illustrated by Langendorf et al. (1944) in a scheme, but, naturally, this can not be easily demonstrated in actual tracings. The authors present cases with P-R intervals greater than 0-12 sec. The case presented in this paper is a further contribution to this problem because it illustrates a type of arrhythmia, apparently rare, since we have not seen it reported in recent years.

The Pathology of the Nodular Goiter

Excerpt A decade ago it commonly was thought that the anatomical examination of thyroids removed from patients suffering from hyperthyroidism did not reveal changes which could be correlated with t...