Dean was prosecuted in federal court for making threats against the President of the United States. Dean was a voluntary patient in a private psychiatric hospital and told a nurse, shortly before the President came to town, that Dean planned to shoot the President. The nurse reported the threat to FBI agents. Dean's motion to prevent the nurse from testifying is likely to be 
successful, because the statement was made in a medical setting.  successful, because the nurse violated a confidence in reporting the statement.  unsuccessful, because the statement was not within any privilege.  unsuccessful, because Dean had not been committed involuntarily by court order. 