Search PubMed⌕ Search

Biomedical subjects

R Perkins

Publications and source records attributed to R Perkins.

88 records · Page 5Linked to original sources
PubMedDate not supplied

Grafting materials and methods in reconstructive ear surgery.

The evolution of tympanic membrane grafting over the past 20 years has been based on biologic tissues of mesodermal origin which contain a collagen matrix. The dominant theme of this evolution has been the modification of these collagen membranes by physical and chemical agents to achieve a more ideal graft. The graft material and the operation should be suited to specific problems. Current operative techniques and graft materials are discussed. It is believed that there will be continued modification and manipulation of collagen in the future to achieve a more ideal graft for tympanic membrane restoration.

Ear Diseases↗
PubMedDate not supplied

Human tympanic membrane--malleus attachment. Preliminary study.

The relationship between the malleus handle and the tympanic membrane in humans has been studied with primary attention being directed to the fibrous layer of the tympanic membrane and its method of attachment to the malleus. This attachment is most intimate at the level of the umbo and becomes progressively more tenuous as the short process is approached. The long process of the malleus, comprised of a bony core, has a definite sleeve of cartilage surrounding its entire length. This cartilage is surrounded by a perichondrial layer which has previously been termed a periosteum. In the lower third, the fibrous lamina propria appears to split equally and the fibers then blend imperceptively with those of the perichondrial layer surrounding the manubrium. At high levels, the attachment is less intimate, most of the fibers appearing to pass lateral to the malleus handle. The embryologic development of the tympanic membrane-malleus junction has been considered and the anatomical features of this area have been considered in relation to functional requirements.

Ear Ossicles↗
PubMedDate not supplied

A scanning electron microscopic study of the normal human stapes.

The structure of the normal human stapes was studied with the scanning electron microscope. Specimens were obtained 48 hours after death from adult human temporal bones free from obvious inflammatory disease. The specimens were fixed, dissected, critical-point dried and coated with gold. In this scanning electron microscopic study an attempt has been made to systematically demonstrate the average scanning electron microscopic features of various areas of the normal human stapes. An emphasis has been placed upon demonstrating as clearly as possible the details previously unclear or unrecognized and duplication of many excellent earlier light and electron microscopic studies has been attempted. The typical appearance of the stapes head, neck, arch, crura and footplate has been presented. It is apparent that there exists a high degree of structural specialization particularly in the stapes arch and footplate area.

Ear Ossicles↗
PubMedDate not supplied

Mental health: meeting the needs of neglected patients.

This article discusses part of a study of a large, well-resourced community care service. The study looked at why people with serious, ongoing mental health problems were sometimes rejected by the service or refused the care they were offered. The authors argue that these patients need the support of mental health care services although they can be difficult to care for, and suggests ways in which this can be achieved.

Community Mental Health Services↗
PubMedDate not supplied

Formaldehyde-formed autogenous fascia graft tympanoplasty.

The formaldehyde-formed autogenous fascia graft represents another step toward more reliable functional restoration of the diseased tympanic membrane. It combines the advantages of the availability and high nonperforation rate of autogenous fascia with the more normal anatomic restoration experienced with homograft tympanic membrane grafts. Its primary indication is in total membrane perforations with intact malleus although the concept can be employed in conjunction with various types of ossicular reconstruction.

Dilatation↗
PubMedDate not supplied

Septic olecranon bursitis: recognition and treatment.

BACKGROUND: The superficial location of the olecranon bursa places it at high risk for injury, possibly leading to the entry of bacteria into the bursal sac. Early differentiation between septic and nonseptic olecranon bursitis is paramount to direct therapy, to hasten recovery, and to prevent chronic inflammation. METHODS: A literature review was performed using MEDLINE files from 1967 to the present. Additional references from the bibliographies of these were also utilized. RESULTS AND CONCLUSIONS: Olecranon bursitis is a common condition that requires the treating physician to be aware of the predisposing factors, clinical signs and symptoms, and laboratory findings of both septic and nonseptic olecranon bursitis. With early recognition, prompt therapy, and preventive measures, the morbidity of septic olecranon bursitis can be considerably reduced, but surgical incision and drainage or excision could be required if conservative therapy fails.

Bursitis↗
PubMedDate not supplied

Evaluation of an Alaskan marine safety training program.

The Alaska Marine Safety Education Association provides commercial fishermen with an intensive 18-24-hour course addressing emergency preparedness, emergency response, and survival training. This study is a retrospective evaluation of the effectiveness of the course in reducing drownings and hypothermia deaths among commercial fishermen from January 1, 1991, to December 31, 1994. None of the 114 fishermen who died during the study period were graduated from the course, and none of the 64 vessels on which a death occurred had an course-trained person on board.

Accident Prevention↗
PubMedDate not supplied

Drowning in Alaskan waters.

OBJECTIVE: To enumerate drowning fatalities in Alaska in order to identify risk factors and areas for intervention. METHODS: Information from death certificates, state troopers' reports, and medical examiner reports were abstracted and analyzed. Rates were calculated using 1990 census figures as denominator data. RESULTS: There were 542 drowning fatalities in Alaska for the years 1988 to 1992. The 20-29 age group had the highest frequency and rate of drownings. The incidence rate for the state was 20 drownings per 100,000 population per year, almost 10 times higher than the overall U.S. rate of 2.11 per 100,000 per year. Incidence rates were highest among adolescent males (10-19), young adult males (20-29). Alaska Natives, and rural residents. Alaska Native males, ages 30-39 averaged 159 drownings per 100,000 per year, the highest drowning rates in the state. CONCLUSIONS: Drowning is a major public health concern in Alaska. People who fish commercially and young Native males are groups at high risk for drowning. Intervention efforts should be concentrated on these two populations.

Adolescent↗
PubMedDate not supplied

Mad to work here....

Explore the source record for details and available documents.

Employment↗