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Biomedical subjects

R I Davidson

Publications and source records attributed to R I Davidson.

33 records · Page 2Linked to original sources
PubMed1980

Transient focal cerebral ischemia as a presenting manifestation of unruptured cerebral aneurysms.

Few reports have described an association between cerebral transient ischemic attacks (TIAs) and unruptured cerebral aneurysms. This study presents seven patients with TIA who had aneurysms in a vascular distribution appropriate to their clinical symptoms. In three patients, angiographic evidence of embolization was present distal to the aneurysm without apparent cardiac or extracranial arterial source for the emboli. The most reasonable pathogenesis for TIA in a patient with an associated saccular aneurysm would be thrombosis of the aneurysmal sac with subsequent embolization. However, subarachnoid blood can cause permanent focal intracranial narrowing, and this appeared to be a factor in at least one patient. The results imply that patients with symptoms of TIA should have their intracranial arterial circulation visualized as part of the diagnostic evaluation.

Adult↗
PubMed1980

Primary hydrocephalus in adolescence.

Six of a series of 90 patients with hydrocephalus in the first two decades of life were adolescents. Four of these patients had acute symptoms that were superimposed on a baseline of a marginally functional cerebrospinal fluid circulatory system. All 6 patients were believed to have congenital etiologies for their hydrocephalus despite its clinical presentation in the second decade of life.

Adolescent↗
PubMed1978

Spinal epidural empyema with the Brown-Séquard syndrome.

A patient with an acute onset of the Brown-Séquard syndrome, in whom the etiology was a painless thoracic epidural empyema, is discussed. The case is a unique presentation for spinal epidural empyema and presents a rare extramedullary cause of the Brown-Séquard syndrome. Pertinent literature for spinal epidural empyema is reviewed.

Aged↗
PubMed1975

Intraperitoneal pseudocyst: treatment by aspiration.

Abdominal pseudocysts have been recorded infrequently as a complication of intraperitoneal shunting and the diagnosis and treatment of this problem in the past have been made of laparotomy. The management of this complication of peritoneal bypass was successfully undertaken at the time of conversion to a vascular system in a patient where an enlarging abdominal mass was associated with the signs and symptoms of shunt malfunction. It is felt in view of past recorded cases and our present experience, that the diagnosis of this complication can be made clinically and the condition treated without resorting to a major abdominal exploratory procedure.

Adult↗
PubMedDate not supplied

The shoulder abduction test in the diagnosis of radicular pain in cervical extradural compressive monoradiculopathies.

The authors have observed a series of patients with cervical monoradiculopathies due to extradural compressive disease in whom clinical signs included relief of radicular pain with abduction of the shoulder. Of 22 patients requiring myelography for unremitting radicular pain, 15 experienced relief of pain with shoulder abduction. Thirteen patients showing this sign required surgery and all achieved a good result. Two patients were relieved with additional conservative measures. Pain relief obtained with this maneuver seems to occur by decreasing tension on the nerve root. This shoulder abduction relief sign has not been commonly elicited in the past, and the authors wish to bring attention to its value as an indicator of significant cervical extradural radicular compressive disease.

Adult↗