Clinical research involves a number of ethical issues for the nurse researcher and clinician. When new treatments, such as experimental drugs, are used in patient care, the issues of informed consent to treatment and the balancing of risks and benefits may be especially difficult to resolve. By understanding the functions and elements of informed consent, nurses can assist their patients to ask for and to comprehend the information they need to be truly and fully informed about treatment choices. Likewise, assessing the risks and benefits of an experimental treatment option, such as an experimental drug for the treatment of primary hypertension, may be important to the long-term health of patients. Nurses assist patient decision making and the assessment of relevant risks and benefits by being fully informed about the planned research and by applying knowledge of ethical principles to patient care. When nurses incorporate this type of ethical reflection and moral skill into nursing practice, they meet minimal moral obligations to patients.