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Biomedical subjects

A A RANEY

Publications and source records attributed to A A RANEY.

8 recordsLinked to original sources
PubMed1954

Lumbar sympathectomy by electrocoagulation; its use in the management of certain vascular and visceral disorders.

Although normally the sympathetic nerves aid vascular dilatation during effort, in certain diseases of the vascular system they have a reverse effect. Abolition of sympathetic vasoconstrictive impulses by sympathectomy is the most effective treatment in some chronic peripheral vascular conditions. The authors have used electrocoagulation for a number of years and found it quick, effective and more likely to prevent regeneration of the affected nerves. Improvement was obtained by sympathectomy in arteriosclerotic vascular insufficiency, thromboangiitis obliterans, Raynaud's disease, reflex sympathetic dystrophy following thrombophlebitis or trauma, scleroderma, spinal sympathetic dystrophy and acquired megacolon. A case of causalgia was aggravated by the operation. Abstention from the use of tobacco appears to be sufficient for control of symptoms in many cases. Since vasospasm is manifested in many conditions long before a thrombotic catastrophe occurs, not only relief of symptoms but prevention of irreversible changes may be achieved by early operation.

Causalgia↗
PubMed1950

The contribution of cerebral angiography in diagnosis.

Angiography is important in the diagnosis of central nervous system disorders. In operable lesions it not only discloses the location of the lesion but also gives valuable information regarding its character and surrounding vascular architecture. The technique of both the pericutaneous and the open methods is described. The advantages of the controlled automatic arteriograph are described as well as pertinent information regarding cerebral circulation time. The choice of contrast media and the advantages and disadvantages of each are described. The three phases of angiography important in diagnosis-the arterial phase, the capillary phase and the venous phase-are discussed. The indications and contraindications are briefly outlined with respect to neoplasms, trauma, hemorrhage, aneurysms and other such operable lesions. The characteristic changes produced by aneurysms, vascular malformations, neoplasms and other space-occupying lesions as related to the circulatory apparatus show variations characterizing the type of lesion encountered. Angiography in traumatic conditions, while limited, is of exceptional value in the diagnosis of obscure lesions, particularly the subdural hematomas.

Angiography↗