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Biomedical subjects

D Barnard

Publications and source records attributed to D Barnard.

At least 73 records · Page 4Linked to original sources
PubMed1986

Sensory nerve morbidity following Le Fort I osteotomy.

The Le Fort I osteotomy has been used increasingly frequently in the management of dentofacial deformity since the wide acceptance of the down-fracture technique. The improved access provided by this technique allows movement of the Le Fort I segment in three planes. This paper reviews briefly the neuroanatomy of the area and considers how the surgical technique of Le Fort I osteotomy interferes with the sensory nerve supply. The sensory nerve function in ten patients who underwent Le Fort I osteotomy is reviewed.

Adolescent↗
PubMed1985

Association between Bell's palsy and lymphoid malignancies.

Eight cases of lymphoid malignancy preceded by Bell's palsy are reported. There was a disproportionate number of ALL cases, two of which were of T-cell type. The possible pathogenic association of these conditions is discussed.

Facial Paralysis↗
PubMed1985

Unsung questions of medical ethics.

Official doctrines of medical ethics have become increasingly 'patient-centered': physicians are exhorted to respect patients' autonomy and to encourage patient participation in decision making; physicians in general medicine and primary care, especially, are urged to develop psychosocial competence, cross-cultural sensitivity and communications skills. These official values are undermined and contradicted, however, by the routines and assumptions that physicians use to organize their everyday work. These routines are taken so for granted as natural and required for the smooth, orderly practice of medicine that they escape evaluation for the implicit values they contain. Yet, they reinforce a particular view of appropriate roles and responsibilities for both physician and patient in the medical system, including the agenda and purpose of the medical interview; the level and amount of information to share with patients; and the power structure of the physician-patient relationship. These values, hidden in the routines of daily practice, are unsung questions of medical ethics. A fallacy in calls for greater patient participation in medical care is that this participation can flourish by simple addition, without reform of the ordinary structures of everyday practice. It is unlikely that these structures will change unless their normally invisible value commitments are drawn out of the obscurity of routine, and made subjects for public scrutiny and choice.

Communication↗
PubMed1985

Progress in element analysis on a high-voltage electron microscope.

X-Ray microprobe (XMA) and electron energy-loss (EELS) spectrometers have been installed on the high-voltage electron microscope (HVEM). The probe size has been measured and background reduction is in progress for XMA and EELS as are improvements in electron optics for EELS and sensitivity measurements. XMA is currently useful for qualitative analysis and has been used by several investigators from our laboratory and outside laboratories. However, EELS background levels are still too high for meaningful results to be obtained. Standards suitable for biological specimens are being measured, and a library for quantitative analysis is being compiled.

Animals↗
PubMed1984

Effects of the luteinizing hormone-releasing hormone (LHRH) analog D-Trp6-Pro9-NEt-LHRH on the pituitary-gonadal axis of prepubertal rhesus monkeys.

To elucidate whether the luteinizing hormone-releasing hormone (LHRH) analog D-Trp6-Pro9-NEt-LHRH (LHRHa) decreases plasma testosterone levels in male primates solely by inhibiting gonadotropin secretion or, in addition, by inhibiting testicular testosterone biosynthesis, we have investigated the effects of this drug on 6 infant male rhesus monkeys. Three animals received LHRHa (12 micrograms . kg . day s.c., experimental group), and 3 animals received saline injections (control group) during the first 2 mo of life. Mean plasma testosterone was significantly lower in the experimental group compared to the control group (54 +/- 7 ng/dl vs. 501 +/- 52 ng/dl, P less than 0.001). The experimental group also had significantly lower mean follicle-stimulating hormone (FSH; 5.1 +/- 0.2 microgram/ml vs. 9.6 +/- 0.7 microgram/ml, P less than 0.001), and bioactive luteinizing hormone (LH; 2.0 +/- 0.08 microgram/ml vs. 3.5 +/- 0.2 microgram/ml, P less than 0.001). To study whether LHRHa influences testicular function directly, all animals were treated with human chorionic gonadotropin (hCG; 100 mIU . kg . day i.m.) for 28 days beginning at 8 mo of age. During Days 15 through 28 we administered LHRHa 12 micrograms . kg . day s.c. to the experimental animals and saline injections to the control group. Plasma testosterone increased to 5827 +/- 557 ng/dl in the experimental group and 4440 +/- 897 ng/dl in the control group after 14 days of hCG treatment. Plasma testosterone concentrations decreased in both groups of animals from Days 15 to 28 fo the study. All steroid intermediates were similar in both groups of animals on Days 14 and 28.(ABSTRACT TRUNCATED AT 250 WORDS)

Animals↗
PubMed1983

Religion and religious studies in health care and health education.

Throughout history religion and medicine have been closely intertwined. This essay outlines some of the bases for cooperation between religious studies and the education and practice of allied health professionals. Four themes are identified in which religious perspectives encourage critical scrutiny of values and assumptions that shape health care: (1) definitions of health and sickness; (2) the relation of health as a human value to other human values; (3) attitudes toward the aged, incurable, deformed, or retarded individual; and (4) attitudes toward nature. Three areas are discussed in which religious studies may make specific contributions to the allied health curriculum: (1) preparing students for the encounter with pluralism; (2) supplying an existential focus on the experience of illness to supplement the technical focus of professional training; and (3) emphasizing the common humanity that links patient and health care provider.

Allied Health Personnel↗