A nurse is cаring fоr а client whо hаs anemia. Select the 4 findings that require immediate fоllow-up (Select all that apply). Laboratory Results 0900: Hct 26% (37% to 47%) Hgb 8 g/dL (12 to 16 g/dL) WBC count 7,500/mm3 (5,000 to 10,000/mm3) Potassium 4.2 mEq/L (3.5 to 5 mEq/L) Nurses' Notes 1000: One unit of packed RBCs started through an 18-gauge IV in the client's left hand. Unit of blood infusing well. IV site dry and intact, without redness or swelling. 1015: Client is flushed and reports new onset of flank back pain and chills. Client voided 250 mL of reddish-brown urine. Bilateral breath sounds clear and present throughout. IV site dry and intact, without redness or swelling. Vital Signs 1000: Temperature 36.8° C (98.2° F) Blood pressure 106/66 mm Hg Heart rate 108/min Respiratory rate 22/min Oxygen saturation 97% on room air 1015: Temperature 39.6° C (103.3° F) Blood pressure 78/50 mm Hg Heart rate 122/min Respiratory rate 28/min Oxygen saturation 95% on room air