Your female lupus patient is presenting with severe weakness, fatigue, dyspnea, and heart palpitations. She reports that her grades have been dropping because she's too exhausted to do anything and she can't concentrate. She is pale, her skin is cold, and the tips of her fingers are slightly cyanotic.
Her heart rhythm is sinus rhythm; upon auscultation, S1 and S2 could clearly be heard, no extra sounds or murmurs identified. Her hematocrit is 22% and her hemoglobin is 7.5 g/dL.
Which of the following orders should you place FIRST?
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