Periarteritis nodosa

In arterial hypertension the peripheral resistance is uniformly raised throughout the area of the greater circulation, and it is not increased in the splanchnic area to any greater extent than in other tissues. AUTHORS. Baylin, George J.: Abdominal Aorta.

Collateral Anat. Rec.

Circulation Following 75: 405, 1939.

an

Obstruction

of

the

The collateral circulation is described in a patient, male, aged 34 years, who had a clot with calcification in the abdominal aorta just distal to the orifices of the renal arteries. The most important collateral channel was the colic anastamosis. The superior mesenteric artery and its middle colic branch were almost as large as the aorta, and joined directly with the equally enlarged left colic branch of the inferior mesenteric artery. Other channels of collateral circulation were the somewhat enlarged and tortuous internal mammaries which joined the inferior epigastric arteries on either side. The last three pairs of intercostal arteries were enlarged and tortuous and made numerous connections with other vessels. These connections were important, but ,subordinate to the anastomosis between the two mesenteries. NAIDE.

Fitz,

Reginald, Parks, Arch. Int. Med. 64:

Harry, and 1133, 1939.

Branch,

Charles

F.:

Periarteritis

Nodosa.

A case of periarteritis is reported in a patient, female, aged 37 years, who had symptoms of the disease for eleven years before death. The patient was studied during twenty months of almost continuous hospitalization so that a fairly comComplete plete account of the evolution of the disease in this case was developed. necropsy findings are reported. NAIDE.

McLaughlin, clavian

Intermittent C. W., Jr., and Pompa, A. M.: Vein. J. A. M. A. 113: 1960, 1939.

Obstruction

of the

Sub-

The report concerns intermittent occlusion of the subclavian vein in a 24-yearold farmer. Swelling and cyanosis of the entire right upper extremity followed Cervical pain acexertion and subsided with rest over a period of two years. companied these symptoms. Eight years prior to present illness, he sustained a fracture of both bones of the right forearm which healed without deformity. No sensory disturbance or loss of strength was noted. taken after collodial thorium dioxide was injected into and into the axillary vein showed clearly an obstruction as it crossed the first rib. At operation was sectioned,

the narrowing allowing the rib

Ten days following and both arms were in size and position.

the

was to slip

confirmed downward,

operation, exercise same diameter.

X-ray photographs to be the median cubital vein or narrowing of the vein

and the scalenus anticus and relieving the obstruction.

failed Venagran

to

produce edema showed the vein

mu,scle

or cyanosis; to be normal MCGOVERN.

Stewart, Harold Investigation

J., and Watson, 19: 35, 1940.

Robert

Measurements volume output,

of the arteriovenous stroke volume, vital

F.:

The

Circulation

oxygen difference, capacity, cardiac

oxygen size,

in Athletes.

J. Clin.

consumption, minute circulation time and