The medical assistant drops an instrument on the floor while setting up a sterile tray for a procedure. He picks up the instrument and places it back on the sterile field. A few days after the procedure, the patient calls the office, concerned that the area surrounding the procedure site is infected. Which of the following torts has the assistant committed?

The National Healthcareer Association (NHA) is the largest allied health certification agency in the United States, with over 1 million certifications awarded since 1989.