Patient safety and improve quality are the priority of every health care workers, such as nurses, respiratory therapist and doctors, ect. Hood (2014 page 490) defines quality " degree of excellent possesses," and patient safety define as a prevention of harm associated with nurses and not associated with nurses, such as patient fall. Patient safety is approved by nurses and supported by hospital bodies. JoANN Zerwekh 2012 safe staffing should be the ideal. There is no but and if. Safe nurse staffing should be maintained at all time. At my hospital, one of the leading causes of patient safety is fall; Despite of it has been
