weapon detectors (installed or handheld), enclosed work­sta­tions with shatter-resistant glass, deep service counters, separate rooms or areas for high-risk patients, locks on doors, removing access to or securing items that could be used as weapons, furniture affixed to the floor, opaque glass in patient rooms (which protects privacy, but allows the health care provider to see where the patient is before entering the room), closed-circuit television monitoring and video recording, sight-aids, and personal alarm devices. (10) Environmental risk factors (A) In general The term environmental risk factors means factors in the covered facility or area in which a covered service is performed that may contribute to the likelihood or severity of a workplace violence incident. (B) Clarification Environmental risk factors may be associated with the specific task being performed or the work area, such as working in an isolated area, poor illumination or blocked visibility, and lack of physical barriers between employees and persons at risk of committing workplace violence. (11) Patient-specific risk factors The term patient-specific risk factors means factors specific to a patient that may increase the likelihood or severity of a workplace violence incident, including a patient’s mental status, treatment and medication status, history of violence as known to a covered employee at a covered facility or while performing a covered service, use of drugs or alcohol as known to a covered employee at a covered facility or while performing a covered service, and any other conditions or disease processes that may cause the patient to experience confusion or disorientation, to be non-responsive to instruction, or to behave unpredictably. (12) Secretary The term Secretary means the Secretary of Labor. (13) Work practice controls (A) In general The term work practice controls means procedures and rules that are used to effectively reduce workplace violence hazards. (B) Inclusions The term work practice controls includes assigning and