Bioethics and Medical Ethics Commons^™

Assessing Decision-Making Capacity After Severe Brain Injury, Andrew Peterson

Electronic Thesis and Dissertation Repository

Severe brain injury is a leading cause of death and disability. Following severe brain injury diagnosis is difficult and errors frequently occur. Recent findings in clinical neuroscience may offer a solution. Neuroimaging has been used to detect preserved cognitive function and awareness in some patients clinically diagnosed as being in a vegetative state. Remarkably, neuroimaging has also been used to communicate with some vegetative patients through a series of yes/no questions. Some have speculated that, one day, this method may allow severely brain-injured patients to make medical decisions. Yet, skepticism is rife, due in part to the inherent difficulty of …

Revisiting The Ethics Of Hiv Prevention Research In Developing Countries, Charles Weijer, Guy Leblanc

Philosophy Presentations

Issues: We present key aspects of our paper, commissioned by UNAIDS in 2005, entitled, “Revisiting the ethics of HIV prevention research in developing countries.” In 2004 and 2005 we witnessed the closure or suspension of three international clinical trials testing tenofovir in the prevention of HIV infection in high risk groups due to the failure to provide free treatment to those who seroconvert during the conduct of the study. We examine critically moral claims for the provision of treatment to those who seroconvert in HIV prevention trials and ask whether it is a matter of moral obligation or moral negotiation? …

Selecting Subjects For Participation In Clinical Research: An Empirical Inquiry And Ethical Analysis, Charles Weijer

Philosophy Publications

Procedures for the selection of subjects for participation in randomized clinical trials--usually formalized as eligibility criteria in the study protocol--have both scientific and ethical implications. In this thesis, I undertake an examination of eligibility criteria at three stages in the genesis and dissemination of medical knowledge: clinical trial protocol, interpretation by investigators, and reporting of study results.

In the first chapter, ethical issues in subject selection are reviewed and the main study questions are presented. In the second chapter, the results of an examination of eligibility criteria in two sets of clinical trials, one sponsored by the NSABP, the other …

Characterizing The Population In Clinical Trials: Barriers, Comparability, And Implications For Review, Charles Weijer

Philosophy Publications

The definition of the study population for a clinical trial via the criteria for trial eligibility has implications for the validity of the study and its applicability to clinical practice. Though issues of equity regarding the selection of subjects for research have long been a concern of ethicists, issues regarding the impact of subject selection on a trial's generalizability have only recently attracted ethical scrutiny. After a review of the history of the ethics of subject selection, I focus on three empirical questions regarding the generalizability of clinical trials. (1) What proportion of diseased populations are studied in clinical trials? …