Biomedical subjects

R McNamara

Publications and source records attributed to R McNamara.

22 records · Page 2Linked to original sources

PubMedDate not supplied

Distribution, severity and risk factors for aortic atherosclerosis in cerebral ischemia.

Significant thoracic aortic plaques (>4 mm) are an independent risk factor for ischemic stroke. Within 1 week of stroke/transient ischemic attack (TIA) onset, 105 consecutive patients underwent transesophageal echocardiography assessment of aortic plaque thickness using the criteria of Amarenco et al. (N Engl J Med 1994;331:1474-1479). A proximo-distal gradient was found in the distribution of aortic atheroma >4 mm (p = 0.04). Symptomatic coronary artery disease was associated with plaque in the proximal aorta (p = 0.03); extracranial carotid stenosis >70% was associated with plaque in the arch and descending aorta (p < 0.01). The severity of aortic plaque was associated with age on multivariable analysis (p = 0.0003 to p < 0.01). Only smoking showed predictive regional specificity (p = 0.03);no other risk factors were associated with aortic atheroma in any segment. In stroke/TIA patients, carotid stenosis >70% predicts aortic arch atheroma plaques >4 mm which may predispose to reinfarction after endarterectomy. Atheroma of the ascending aorta is associated with ischemic heart disease, and cardiac screening should be considered in asymptomatic patients.

Adult↗

PubMedDate not supplied

Family planning operations research in Africa: reviewing a decade of experience.

Between 1979 and 1990, Columbia University conducted 26 family planning operations research (OR) projects in 13 sub-Saharan African countries. Most of these projects were implemented in settings where family planning service delivery had not yet been initiated or was new and poorly developed. In keeping with program needs in the early stages of development, the majority of the OR projects were based on demonstration or diagnostic designs. Only four of the 23 projects were comparative or quasi-experimental in design. Projects demonstrated the growing demand for family planning, and the feasibility and acceptability of a range of service delivery models. Sixteen of the projects have been sustained or replicated by national or local governments and institutions following the initial OR phase, replication of two others is planned, and another four resulted in policy formulation or improvements in existing national programs. OR in Africa played an important role in generating political and medical support for contraceptive services, and served to improve project management. OR proved more useful in the implementation and strengthening of individual programs than in generating universal lessons regarding service delivery. In order to maximize OR's utility in Africa, simple research designs and methods should be adopted.

Africa↗

PubMedDate not supplied

Family planning in traditional markets in Nigeria.

Operations research on the Ibadan Market-Based Distribution Project in Nigeria investigated the feasibility of a contraceptive distribution system using traders in the traditional markets to sell pills, condoms, and foaming tablets. Two hundred and thirty-five female and male traders were trained and supplied with contraceptives, malaria treatments, and oral rehydration salts to sell at low prices in 39 markets. This article presents findings from qualitative and quantitative research conducted in 1985-89 to determine if the sale of contraceptives in the marketplace is acceptable to participating traders and shoppers and to identify trader and market characteristics associated with sales volume. Sales of contraceptives totaled 18,286 pill cycles, 11,818 packages of four condoms, and 4,429 packages of four foaming tablets. The average monthly sale for each participating trader was 5.3 units. Adaptations of this model are being tested in other Nigerian cities and in Accra, Ghana.

Adult↗

PubMedDate not supplied

Quantifying nursing needs in home health care.

A study was conducted to determine what factors were most predictive of the quantity of nursing service and total agency service required by cardiac and cancer patients in home-care agencies. A retrospective record review on 397 patients in 9 randomly selected Connecticut home-care agencies collected demographic data on referral and payment source, support system, discharge status, primary care provider, and health status, as well as total number of professional and nonprofessional visits and length of stay. The Health Status Score, which measured deficits in daily activities and nursing problems, proved to be the best predictor. The ability of the Health Status Score to predict the need for total agency visits was particularly strong for cancer patients. The agency variable was a significant predictor of resource utilization, especially for cardiac patients. A significant limitation of the study was the inconsistency among the agencies regarding closure of records. Future research into resource use in home care depends on consistent and complete recording practices across agencies.

Adolescent↗