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Biomedical subjects

I Macdonald

Publications and source records attributed to I Macdonald.

135 records · Page 8Linked to original sources

The medical care of older patients.

Proper medical care for growing numbers of older people depends upon application of advances in medicine to the special problems of ageing. Despite gaps in understanding of the ageing process, high-quality care can be achieved through routine use of knowledge already available.Older people differ structurally, functionally and psychologically. Health influences every aspect of their lives. Their reactions to stress and disease are altered. In practice, the doctor must assess the biological changes of ageing and their possible influences on symptoms and signs. Modifications in the application of ordinary methods of medicine and surgery are determined by functional impairments and structural defects. While the medical problems of the aged are special, the approach must be general; the practitioner needs experience with disease in all age groups and should be alert to the adverse effects on old people of the universal misunderstandings of ageing and its problems.

Aged↗

Histologic comparison of cultured epithelial autograft and meshed expanded split-thickness skin graft.

Histologic appearance of cultured epithelial autograft (CEA) biopsies obtained up to 2100 days after application from patients with burn injuries differs from time-matched, meshed expanded autograft. The CEA interface with underlying bed remained flat for up to 3 years in three of four patients. CEA epidermal rete ridges, if formed subsequently, were fewer, thinner, and shorter, whereas expanded split-thickness skin grafts had well-defined rete ridges after 1 year. CEA basal layer remained separated from its bed up to 50 days after application, and late blister formation was seen on occasion for up to 3 years. The underlying bed was homogeneous up to 2 years; later some beds demonstrated differentiation with superficial, fine, filamentous collagen fibers and deeper, thick collagen fibers. Fine elastin filaments were initially identified in the superficial bed after 1 year in some specimens and in all after 3 years. Delay in rete ridge formation may explain poor adherence and poor stability.

Burns↗