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Biomedical subjects

V Rivera

Publications and source records attributed to V Rivera.

22 records · Page 2Linked to original sources
PubMedDate not supplied

Abnormalities of the acoustic reflex in multiple sclerosis.

Acoustic reflect morphology was examined in 122 patients with a diagnosis of definite multiple sclerosis. Abnormality in some dimension of acoustic reflex morphology was observed in 75 per cent of the study population. The most commonly observed abnormality was an alteration in one or more of the three relative amplitude indices (afferent, efferent, or central pathway index). Other abnormalities included delayed onset latency, delayed offset latency, reduction in absolute amplitude, and threshold elevation.

Adolescent↗
PubMedDate not supplied

Spinal cord ischemia after resection of thoracoabdominal aortic aneurysms: MR findings in 24 patients.

MR images of the thoracic spinal cord were made in 24 patients who developed signs and symptoms of spinal cord ischemia or infarction following surgery for a thoracoabdominal aortic aneurysm. Findings consisted primarily of four different patterns of signal abnormalities in the distribution of the anterior spinal artery. These abnormalities were identified as types A-D, depending on the degree of involvement of the gray matter and surrounding white matter. We found good correlation between the distribution of the signal abnormalities in the cord, the severity of the neurologic deficits, and the clinical outcome. MR is the imaging method of choice for diagnosing spinal cord ischemia or infarction. A thorough knowledge of the spinal cord arterial territories is crucial for characterizing ischemic MR signal abnormalities and for differentiating them from other causes of myelopathy.

Adolescent↗
PubMedDate not supplied

The use of the Varney brace for subluxating shoulders in stroke and upper motor neuron injuries.

Applying the Varney shoulder brace for painful subluxating shoulders in stroke and head injury patients with or without spasticity has proved to be an extremely effective means of reducing the subluxed shoulder. Other causes for painful shoulders in these patients must be ruled out. Not every shoulder which subluxes with or without spasticity is painful. Correct diagnosis of the etiology of the pain is essential to help the patient. Rotator cuff tendinitis, reflex sympathetic dystrophy, glenohumeral arthritis, shoulder contracture, pain due to central nervous system origin (thalmic pain) and other intrinsic causes of referred pain must be ruled out. Once the subluxed shoulder is proven to be the cause of pain, the Varney brace is an excellent orthosis for the reduction and maintenance of position. Pain usually subsides completely within 5 to 7 days.

Braces↗