Last night a 49 year old male patient was admitted to our med surg unit with R/O PE which was later ruled out. He also had a history of anxiety. Admitting doctor ordered 5 to 10 mg Ativan po Q 4hrs prn. Evening shift nurses questioned it and called the doc on call who quickly changed it to 1 mg Q 4 hrs prn. This morning, the primary doctor comes in and throws a huge fit on the floor. Why didn't my patient get 10 mg Ativan last night???. I explained to her that we have a right to question orders like that and her partner on call changed it. Our pharmacy states max daily dosage should be 10 mg divided over 2 to 3 doses. Also, this patient had taken Ativan only one other time in his life. So...could I get some feedback? I had to write an incedent at the doctors request. Thanks fellow nurses :)