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Biomedical subjects

E A Lewis

Publications and source records attributed to E A Lewis.

At least 55 records · Page 3Linked to original sources
PubMed1975

A radiologic study of tuberculosis of the abdomen (gastrointestinal tract).

The roentgenologic features of 160 cases of tuberculosis of the abdomen are reviewed. The 3 standard examinations of the gastrointestinal tract (plain film abdominal roentgenography, barium meal and follow-through studies, and barium enema examinations) are required to provide useful pointers towards the diagnosis. In plain film roentgenography of the abdomen, the triad of ascites, absence of gas shadows in the right iliac fossa, and segmental dilatation of the terminal ileum demonstrates features which are very suspicious of intestinal tuberculosis. In the barium meal studies showing disordered small bowel patterns, tuberculosis of the abdomen should be considered when this pattern is associated with fixation of bowel loops on supine and erect roentgenograms, spiculation and the presence of multiple strictures in the small bowel. Although the duodenojejunal and ileocecal regions are the commonest sites involved, lesions are not confined to these sites alone, but may also involve any part of the alimentary canal such as the esophagus and the small and large bowel. However, no anorectal lesions were encountered in this study.

Ascites↗
PubMed1975

Clinical application study of externally powered upper-limb prosthetics systems: the VA elbow, the VA hand, and the VA/NU myoelectric hand systems.

The results have been presented of a 2-year survey designed to determine whether external power systems offer a significant contribution to the needs of the upper-limb amputee or whether they represent novelties duplicating the functions of conventional mechanical components. The following conclusions have been drawn: 1. External power does offer advantages to the arm amputee. Myoelectric control, especially combined with a self-suspending socket, offers an otherwise normal partial forearm amputee better function without the necessity of a harness. External power, especially for the short partial or total arm amputee and others with limited excursion, brings increased function with less effort. For these patients the advantages of such components as the electric elbow outweigh the recent disadvantages. 2. The components evaluated in this Study are not without limitations. Maintenance requirements of the VA Elbow were excessive. The VA Elbow should not be prescribed for patients who do heavy work with their prostheses because the flexspline may break. Regarding such concerns as lack of sensory feedback, noise, weight, and flexion/extension speed, the advantages of each unit must be weighed against the disadvantages with preference to the individual amputee. 3. The endoskeletal forearm with soft cover is an advantage because of its lightness and cosmesis. 4. Because of the many malfunctions attributed to prosthetist errors, the need is evident for thorough specialized education in the field of external power. A few centralized fabrication facilities may be desirable as opposed to fabrication by many facilities with limited experience. Modular components that are interchangeable and field repairable would be desirable. The systems should be fitted, installed and repaired only by trained prosthetists who have successfully completed a course in externally powered upper-limb prostheses. All members of the Clinic Team should be thoroughly educated in external power as it is related to prosthetics. 5. Many malfunctions were due to patient misuse. Patients, too, after careful selection must be given thorough training in the care and use of externally powered components, including the limitations and capabilities of these devices. 6. Finally, and most important, the Clinic Team must be recognized as the focal point for the selection of patients and prescription of devices. Each patient must be carefully screened for information such as occupation, motivation, prosthesis use (as opposed to wear), ability to learn and follow through with instructions (charging batteries, etc.), and most importantly, the benefits that external power can offer.

Adolescent↗
PubMed1972

Tuberculous ileo-colitis in Ibadan: a clinicoradiological review.

Twenty cases of tuberculous ileo-colitis with radiographic changes seen in the University College Hospital, Ibadan, Nigeria, are reviewed and the clinical features and radiographic patterns examined. The intestinal lesions in all cases were secondary to healed and active pulmonary tuberculosis. Although the ileo-caecal region is the commonest site of involvement, lesions also occurred in the distal part of the colon and the entire colon was sometimes involved. Rare occurrences, such as the diverticular type, enterolithiasis, tuberculosis presenting as intussusception and as an appendicular mass, are also reported. Four principal radiological types of colonic change emerged from the study, namely, the hyperplastic, the ulcerative, the mixed ulcero-hyperplastic, and the carcinoma-like types. The salient features in the differential diagnosis of ileo-colonic lesions in a tropical setting are discussed.

Adolescent↗