PubMed Health⌕ Search

Biomedical subjects

R F Heary

Publications and source records attributed to R F Heary.

24 records · Page 2Linked to original sources
PubMed1993

Nonsurgical treatment of compound depressed skull fractures.

Classical treatment of compound depressed skull fractures includes debridement and closure of all scalp wounds to minimize the risk of delayed intracranial infection. In selected situations, a nonsurgical approach may prove to be equally safe. Over a 33-month period, we evaluated 1075 patients for head trauma. There were 63 patients with non-missile, compound depressed skull fractures (9 of these 63 patients have been excluded for deaths that occurred within 4 days of admission). Patients with significant intracranial hematomas or dural violations over the convexity of the brain underwent formal surgical therapy. Surgical therapy was performed on 28 patients (52%; age 33 +/- 3 years; ISS 24 +/- 2) and it consisted of craniotomy with debridement, elevation of depressed fragments, repair of dural tears, and evacuation of hematomas. Nonsurgical treatment was used if there was no evidence of violation of the dura mater and of significant intracranial hematoma. If the following criteria were satisfied, then the nonsurgical approach was employed: no evidence of exposed brain or a cerebrospinal fluid leak, no pneumocephalus related to the fracture, no depressed fragments of bone more than 1 cm below the inner table of the skull, and no gross wound contamination. Nonsurgical therapy was used on 26 patients (48%; age 34 +/- 3 years; ISS 19 +/- 2) and it consisted of wound irrigation, debridement, and closure. In all 54 patients of both subsets of patients, intravenous antibiotics were administered for 5 to 7 days. After two additional days of observation, off antibiotics, the patients were discharged. There were no infectious complications related to the central nervous system.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMed1993

Preoperative versus postoperative neuropsychological sequelae of arteriovenous malformations.

In a cohort of 14 patients suffering from cerebral arteriovenous malformations (AVM), neuropsychological functioning was examined before and after AVM resection. Improvements after surgery were assumed to be due to enhanced neurocognitive functions associated with the hemisphere ipsilateral to the AVM, and to a lesser extent, with the contralateral hemisphere. Before surgical intervention, the performances of AVM patients were deficient relative to matched normals. Postoperatively, neuropsychological gains were observed particularly in the areas of learning, memory, and higher integrative thought, not only for ipsilateral, but also for contralateral functioning. Contralateral and ipsilateral improvement is consistent with the premise that cerebrovascular steal is lessened; thus, neurosurgical intervention to eliminate arteriovenous shunts was found to result in overall neurobehavioral gains.

Adolescent↗
PubMed1993

Cardiovascular responses to global cerebral ischemia: role of excitatory amino acids in the ventrolateral medullary pressor area.

The object of this study was to investigate the role of the ventrolateral medullary pressor area in mediating the cardiovascular responses to experimentally induced global cerebral ischemia, and to test if excitatory amino acids or acetylcholine are the transmitters released in this brain region during these responses. The cerebral ischemic response was elicited in pentobarbital-anesthetized, artificially ventilated male Wistar rats by bilateral ligation of vertebral arteries followed by temporary clamping of the common carotid arteries. The pressor area was identified by microinjections of L-glutamate. Inhibition of neurons in this area by microinjections of muscimol, a gamma-aminobutyric acid receptor agonist, abolished the ischemic response, which demonstrated that this area is important in mediating these responses. Microinjections of a broad-spectrum excitatory amino acid receptor blocker (kynurenate), of specific antagonists for N-methyl-D-aspartic acid (NMDA) and non-NMDA receptors (injected alone or in combination), and of atropine failed to block the ischemic responses. These results indicate that: 1) the ventrolateral medullary pressor area mediates pressor responses to cerebral ischemia, and 2) excitatory amino acids or acetylcholine in this area do not mediate the cardiovascular responses to cerebral ischemia.

Acetylcholine↗
PubMed1992

Acute stabilization of the cervical spine by halo/vest application facilitates evaluation and treatment of multiple trauma patients.

The management of acute cervical spine injuries has traditionally used bed-based skeletal traction until all non-neurologic injuries have been evaluated. This treatment method substantially hinders the ability to transport patients and to perform imaging studies and surgical procedures. In contrast, early application of a halo/vest apparatus provides immediate cervical stabilization and facilitates the diagnostic work-up and treatment of the patients with multiple injuries. The records of all 78 patients admitted from February 1988 through June 1991 who had acute cervical spine fractures, subluxations, or both with a risk of instability were reviewed. All patients were treated with halo/vests and no patient deteriorated neurologically following halo/vest application. Twenty-nine patients (37%) had a total of 55 associated injuries including long bone/pelvic fractures in 17, thoracic injuries in 13, closed head injuries in 11, facial fractures in 6, noncontiguous spinal fractures in 5, and abdominal injuries in 3. The mean injury Severity Score (ISS) was 18 (range, 9-54). While in the halo/vest, 43 patients (55%) had a total of 99 diagnostic studies completed and 46 patients (59%) had a total of 76 surgical procedures performed. There were 35 neurosurgical procedures on 32 patients and 41 non-neurosurgical surgical procedures on 24 patients. Over the past year, 20 of 21 patients (95%) had their halo/vest placed in the emergency department. The data demonstrate that many diagnostic and surgical procedures need to be performed on patients with unstable cervical spine injuries.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMed1991

Intradural cervical lipoma in a neurologically intact patient: case report.

The authors report an unusual intradural subpial lipoma of the cervical spinal cord in a neurologically intact adolescent. The patient sought treatment for neck pain and had a history of previous trauma. Magnetic resonance imaging revealed the lesion. There are no reported cases of a subpial lipoma detected in the absence of any neurological deficits. A subtotal excision was performed, and pathological studies confirmed the diagnosis. Postoperatively, the patient remained neurologically intact.

Adult↗