SELECTED ARSTRAC’TS 761

Meyer, Fritz: The Causes of Oxygen Deficiency in the Tissues of Patients with

Circulatory Diseases. Klin. Wchnschr. 15: 48, 193(i.

An insufficient supply of oxygen in the tissues in circulatory diseases may be

due to three different causes: (1) au insufficient oxygenation of the arterial blood

(detected by blood gas analysis), (2) a sluggish capillary circulati’on, and (3) a

decreased permeability of the wall of the capillaries to oxygen.

The differential diagnosis between the latter two can be ma’de by determinations

of the CO, and OZ tensions in the tissue, following a method described previously by

the author. When capillary circulation is slowed, the 0, tension in the tissue is

diminished, and the CO, tension is increased. The difference between the gas tensions

of the tissues and of the capillaries is not &angad. A disturbance of the per-

meability of the capillaries produces a different picture. The 0, tension in the

capillaries remains normal, but decreases in the tissues. The CO, tension in the

tissue is only slightly increased. The differences in the tensions between the tissues

and the capillaries are markedly increased for 0, and slightly for CO,. The results

are summarized by means of a special nomogram. Only two of the fourteen pa-

tients with circulatory diseases had a decreased permeability of the capillaries to

oxygen.

R. K.

Gauer, Otto: The Velocity of Pulse Wave in the Aorta and Pemoral Artery of

Human Beings. Ztschr. f. Kreislaufforsch. 28: 7, 7936.

Measurement of the velocity of pulse wave in the aorta and femural artery in a

healthy person twenty-four years of age was determined with the following re-

sults : In the thoracie aorta in a standing or reclining position the rate was 3.8 to

1 meters per second. It increaseId in the abdominal aorta to 4 to 4.5 meters per

second. In the femoral artery, in a standing position, the rate was 12 to 13 meters

per second, and in a reclined position 8.5 meters per second. Con.trol examinations on

other individuals showed only a slight variation from these findings.

J. K.

Gartner, Wilhelm: The Clinical Picture and Circulatory Disturbances in Para-

ganglioma of the Adrenals. Ztschr. f. Kreislaufforsch. 28: 82, 1036.

The author assembles and critically analyzes twenty-two cases from the literature.

He finds that the tumor is unilateral, usually on the right side, and that it rarely

metastasizes. All patients have paroxysmal hypertension with the pressure going

up as high as 300 systolic; these attacks, as time goes on, increase in frequency

and intensity. There are usually several attacks a day; the patient between at-

tacks appears to be normal. The patients have hemorrhages, especially from the

nose or into the retina with consequent visual disturbances. They complain of

pain over the entire body, especially in the back over the adrenals. Glycosuria oc-

curs only during an attack. Chronic hypertension may eventually appear, or the

pressure between attacks may remain normal. Apoplexy may occur during an at- tack, manifesting itself by unconsciousness, motor unrest, epileptiform movements,

or visual disturbances. Such an event may lead to the mistaken diagnosis of glo-

merulonephritis. The patient may recover from the apoplectic seizure, but a succeed- ing one may cause death. In several patients death was preceded by coma. Treat-

ment consists in removing the tumor, and in several instances this procedure was followed by complete cure.

L. N. K.