The nurse is teaching a client with chronic renal failure (CRF) about the use of recombinant human erythropoietin (Epogen) Subcutaneous injections. Which statement indicates the client understands the teaching?

Anaphylaxis is a severe and potentially life-threatening allergic reaction that can lead to a rapid drop in blood pressure, known as hypotension. This drop in blood pressure is a critical indicator of the severity of the reaction and the effectiveness of the treatment provided. The nurse needs to monitor the patient's blood pressure closely to ensure it stabilizes and returns to a safe range.

While oxygen saturation, heart rate, and orientation are also important parameters to assess, they are secondary to blood pressure in evaluating the effectiveness of treatment for anaphylaxis. Oxygen saturation can help determine the adequacy of oxygenation, heart rate can indicate the presence of tachycardia (which may be a sign of an ongoing reaction or hypoperfusion), and orientation can provide information about the patient's mental status and potential complications.

Pernicious anemia is a type of anemia that occurs due to a lack of intrinsic factor, a protein necessary for the absorption of vitamin B12 (cobalamin) in the digestive system. As a result, patients with pernicious anemia are unable to absorb sufficient amounts of vitamin B12 from dietary sources. The treatment for pernicious anemia involves regular administration of cobalamin (B12) injections to bypass the impaired absorption and provide the necessary vitamin B12 directly.

Oral ferrous sulfate tablets are not the appropriate treatment for pernicious anemia. Ferrous sulfate is a form of iron supplement used to treat iron deficiency anemia, which is different from pernicious anemia.

Iron dextran infusions are also not indicated for pernicious anemia. Iron dextran is used for iron replacement therapy in cases of iron deficiency anemia, but it does not address the underlying issue of vitamin B12 deficiency in pernicious anemia.

Routine blood transfusions may be necessary in some cases of pernicious anemia, especially if the patient is severely anemic. However, the primary treatment for pernicious anemia is cobalamin (B12) injections, which provide the necessary vitamin B12 that the patient is unable to absorb.