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Biomedical subjects

M Rafferty

Publications and source records attributed to M Rafferty.

17 recordsLinked to original sources

The 'Open Road' project: real jobs for people with mental handicap.

This article describes the key elements of a three-year innovative project underway in Dublin, Ireland, which is applying the principles of supported employment. It covers the development of more integrated day services for adults with mental handicap, programme participants and activities, and key issues to be resolved in maintaining effective programmes of this kind.

Adult

Pleural effusion is associated with a poor treatment outcome in stage III small non-cleaved cell lymphoma.

The clinical significance of pleural effusion was assessed in 24 children with unresectable abdominal small non-cleaved cell lymphoma (St. Jude Stage III). Patients were consecutively enrolled and treated on a regimen including high dose fractionated cyclophosphamide and co-ordinated high dose methotrexate and cytarabine. The overall results were excellent, with 20 of 24 patients alive and event-free at a median follow-up of 4 years. Only one of the patients who lacked pleural effusion has relapsed (testicular), even though many had massive disease. In contrast, three of seven patients with pleural effusion have failed treatment (p = 0.02) and subsequently died. Two measures of tumor burden, serum lactic dehydrogenase and, in a subset of patients, interleukin-2-receptor levels, were significantly higher in patients with pleural effusion (p = 0.002 and p = 0.05, respectively). These findings suggest that unresectable abdominal small non-cleaved cell lymphoma associated with pleural effusion should be up-staged and that these patients should receive more intensive chemotherapy.

Abdominal Neoplasms

A comparison of placement techniques and complications of externalized catheters and implantable port use in children with cancer.

The complications associated with the placement and use of Hickman catheters (n = 120), Broviac catheters (n = 146), and implantable ports (n = 93) in children with cancer were analyzed. Percutaneously placed central venous access devices (CVADs) tended to fail less often (P = .86) and to develop infections less often (P = .056) than surgically placed CVADs. The difference in complications with percutaneous versus surgically placed CVADs requires confirmation in a randomized trial to assure they are not a result of differences in patient characteristics. When all catheter failures (removal due to infection, obstruction, or dislodgement) were considered, ports had a significantly longer failure-free duration of use than externalized Hickman and Broviac catheters (P = .0009). Ports also remained infection-free longer than externalized catheters (P = .0014). The greatest risk of infection occurs in the first 100 days of use, particularly for ports. This study demonstrates that for long-term use (greater than 100 days) ports are superior to externalized catheters in children with cancer.

Bacterial Infections

A nursing model for addressing the health needs of homeless families.

Homelessness in the United States continues to be a major social problem directly affecting an estimated three million persons, of whom nearly 30 percent belong to families without permanent shelter. This paper reviews recent research concerning homeless families and the conditions in which they live and outlines the significant health and mental health problems that these families experience. Effective nursing interventions for homeless families using Peszneckers' Model of Poverty are proposed. Nurses must advocate for changes in the social and political conditions that bring about homelessness since the resources to meet the needs of these families are either nonexistent or woefully inadequate.

Child

A prospective study of Hickman/Broviac catheters and implantable ports in pediatric oncology patients.

We prospectively studied the continuous function and complication rates of 286 central venous catheters consecutively placed in 264 children and young adults at a single institution over a 19-month period (median follow-up, 376 days). Externalized catheters (91 Hickman [H], 113 Broviac [B]) and implantable ports (n = 82) were compared for complications, including infection and thrombosis. The most frequent major complication of all catheters was infection, although the rates of infection varied with the duration of catheter use and were generally lower than reported by others. Overall, when catheter failures (removal) for infection, obstruction, or dislodgement were considered, ports had a significantly longer failure-free duration of use (P = .0024) than did externalized catheters. Likewise, ports had a significantly longer infection-free (P less than .01) duration of use than H and B catheters. However, differences in patient age and clinical characteristics among the three catheter groups may have affected the outcome. In analysis of pairs matched for diagnosis, therapy, and age, ports had lower infection rates than did B catheters after 100 days (P = .053). This difference became significant at 400 days of catheter use (P = .029). Although there was a trend toward lower rates of infections for ports v H catheters, this difference was not significant. In view of our results in matched pairs, selection of catheter type based on clinical characteristics and patient preferences remains a reasonable therapeutic approach despite the apparent advantages of ports. The superiority of ports for long-term use (greater than 100 days) needs to be confirmed in a large randomized clinical trial.

Adolescent

A profile of the medically uninsured in Georgia.

The provision of health care to the growing number of persons uninsured against medical expenses affects Georgia doctors, hospitals, and state and local government at all levels. While much is known nationally about the uninsured, there are no good data about this group in Georgia. This study uses U.S. Census Bureau data to provide a demographic profile of Georgians who lack health insurance and to identify groups at particular risk for being uninsured. Approximately 950,000 (17.7%) of non-elderly Georgia residents are uninsured, compared to 37 million (17.6%) in the U.S. as a whole. As is true generally in the U.S., those in Georgia who are poor, young, non-white, and in families with a female head are at greatest risk. Of particular note are the poor in Georgia with incomes from 50% to 100% of the federal poverty level (55.2% uninsured). This population deserves the special attention of all involved in finding a solution to this problem.

Employment

Local anesthetic properties of opioids and phencyclidines: interaction with the voltage-dependent, batrachotoxin binding site in sodium channels.

[3H]Batrachotoxinin-A 20-alpha-benzoate ([3H]BTX-B) binds specifically and with high affinity (Kd = 30 nM) to a site on voltage-dependent Na+ channels. Compounds with local anesthetic activity inhibit the binding of [3H]BTX-B by a mutually exclusive, allosteric mechanism. The potential local anesthetic potency of a series of 23 opioids and phencyclidine-like compounds has been estimated by their inhibition of [3H]BTX-B binding to Na+ channels in a preparation of synaptoneurosomes from guinea pig cerebral cortex. The potency of these compounds were also tested as inhibitors of the specific binding of [3H]phencyclidine ([3H]PCP) to a high affinity site on rat brain membranes. Opioids such as morphine and codeine show little affinity for the [3H]BTX-B binding site or for the [3H]PCP binding site. Other analgesics, many of the PCP-like compounds and dioxadrol derivatives are potent versus [3H]BTX-B binding and display both stereospecificity and high affinity towards the PCP-binding site. However, there was no correlation between local anesthetic potency assessed as antagonism of [3H]BTX-B binding and affinity towards the PCP site. Five classical local anesthetics had no affinity for the PCP-site, but did displace [3H]BTX-B from its binding site.

Anesthetics, Local

Using workshops to implement supervision.

Clinical supervision is both topical and novel among many practice disciplines so it is important to consider how to take such an important initiative forward. This article describes a series of workshops designed to achieve this aim. The article focuses on the participants' perceptions of clinical supervision and its relevance to their practice environment. The authors also suggest ways to assist clinical staff further in this area.

Clinical Competence

The homeless mentally ill.

All countries in the West experience the phenomenon of what has been called 'the homeless mentally ill'. There seems to be no simple solution but a challenge is presented to all nurses who can play a significant role. This is an abridged version of a paper delivered in Tel Aviv by two American nurses.

Community Health Services