Assignment Guidelines:This assignment must be in APA format. The assignment should be in paragraph form using complete sentences and avoiding bullet points and numbered list.Use a Level 1 heading to separate your sections (Page 47 of the APA Publication Manual).Title and reference pages do not count toward the total word or page count. At least one textbook source and two and outside sources must be referenced and cited in the paper.Essays: (at least 300 words per prompt)Blood transfusions are sometimes required in healthcare. Based on what you know about blood anatomy discuss why a patient would need a transfusion of PRBC (packed red blood cells), plasma, or platelets. A patient with anemia has a pulse oximetry reading in the high 80s, would this be an expected finding, explain?