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Biomedical subjects

Heather Sampson

Publications and source records attributed to Heather Sampson.

4 recordsLinked to original sources

Informed consent, capitation, and conflicts of interest in clinical trials: views from the field.

BACKGROUND: The beliefs of research team members about informed consent practices are not well studied, especially in regard to financial aspects of research such as capitation fees. Sponsors of research offer capitation fees for the enrollment of subjects, and although this money is intended to cover the costs of the research it can sometimes be used in other ways. There is no clear consensus about whether this financial aspect of trials should be part of the informed consent process or whether it represents a potential conflict of interest. METHODS: We presented several hypothetical cases to members of the American College of Surgeons Oncology Group (ACOSOG) at a semi-annual meeting. ACOSOG is a federally funded clinical trials group evaluating surgical and adjuvant methods of cancer treatment. The meeting included surgeons, nurses, case managers, and others involved in clinical surgical trials. RESULTS: We found that most respondents believed that it would be a violation of the protocol to enroll a subject who showed lack of recall about the study. Most respondents also favored disclosure of capitation fees, especially if those fees went into discretionary accounts, but there was some disagreement about the benefit of that disclosure to potential participants. CONCLUSIONS: This study shows the need for greater work in ensuring that research team members share common understandings about informed consent. It also shows that most of these research team participants are prepared to make more disclosure about financial aspects of research than current standards in fact require.

Attitude of Health Personnel↗

Introducing student nurses to operating department nursing.

The shortage of nurses is a major problem faced by the National Health Service. This also impacts on the shortage of theatre nurses where lack of recruitment and retention are threatening their existence (Montgomery 1997). Recruitment has not previously posed a problem in the operating department where the author works, due to pre-registration diploma nurses (PRDN) being allocated to the department as part of their critical care placement. Many of these students have been appointed to work in the operating theatre once qualified. However, due to changes in nurse education, students are now able to choose their placement.

Career Choice↗

The uncertainty of radio frequency treatment of renal cell carcinoma: findings at immediate and delayed nephrectomy.

PURPOSE: Radio frequency thermal therapy for the ablation of renal cell carcinoma has been reported. Outcomes are usually measured by imaging alone. We have performed ex vivo and in vivo experiments using radio frequency in porcine models in our laboratory. We now report our early experience in the treatment of renal cell carcinoma in patients who underwent post-radio frequency radical or partial nephrectomy. MATERIALS AND METHODS: We treated 10 patients diagnosed with small renal masses with radio frequency. All masses were biopsied before treatment. In 4 patients 5 renal cell carcinomas were treated with radio frequency after surgical exposure of the tumor followed immediately by partial or radical nephrectomy (acute group). Six other patients were treated percutaneously with ultrasound or computerized tomography guided radio frequency under local anesthesia and intravenous sedation 7 days before partial or radical nephrectomy (delayed group). A median of 2 radio frequency cycles was applied. Mean total heating time was 17 minutes 15 seconds. Specimens were analyzed grossly and histologically. Triphasic contrast-enhanced computerized tomography and/or magnetic resonance imaging was performed before and 7 days after radio frequency treatment in the delayed group. RESULTS: Mean radiological largest diameter of all 11 masses was 2.4 cm. and mean gross diameter was 2.2 cm. Pathological examination demonstrated residual viable tumor in approximately 5% of the volume in 4 of the 5 tumors in the acute group and in 3 of the 6 masses of the delayed group. In 1 delayed case the viable tumor appeared to be in contact with the renal vein. No significant complications were observed in 9 of the 10 patients. In 1 delayed case, a subcapsular hepatic hematoma, biliary fistula and pneumonia developed and resolved. CONCLUSIONS: Based on our experience, we continue to consider percutaneous radio frequency for the treatment of small renal cell carcinomas as a potentially curative therapy. However, complete tumor cell death appears to be difficult to achieve with our current treatment protocol. More phase II testing is indicated to ensure that this technique is an effective and reproducible treatment alternative.

Carcinoma, Renal Cell↗