ABSTRACT
The load bearing and deformation characteristics of monofilament nylon 66 have been examined. This material has been shown to have increased strength and altered deformation properties compared to bulk nylon. These features are beneficial in its role as a corneal suture. However, the load bearing performance of monofilament nylon 66 has been shown to be influenced by the manner in which it is stressed, making the task of producing identical stitches difficult. Moreover, a period of rapid relaxation has been shown to occur immediately after installation which makes the time taken to install the suture a critical factor in its subsequent performance. These factors, which are essentially beyond the control of the ophthalmic surgeon, must surely play a significant role in the inconsistent post operative results seen.
Subject(s)
Nylons , Sutures , Astigmatism/etiology , Cataract Extraction , Corneal Transplantation , Humans , Nylons/adverse effects , Postoperative Complications , Sutures/adverse effects , Tensile StrengthSubject(s)
Legislation, Drug , Legislation, Veterinary , Animals , Drug Prescriptions/veterinary , HumansABSTRACT
A 12-month study showed that constipation in institutionalized elderly patients can be eliminated effectively and safely by the planned use of dietary fibre and a controlled fluid intake. The diet of a group of volunteer nursing home patients (average age, 83.5 years) was supplemented to provide a daily dietary fibre intake of 25 g per person. Aperient use was almost eliminated, bowel function improved, and there appeared to be no adverse effects on body weight, or on nutritional or mineral status.
