A nurse is reinforcing teaching about preventing mastitis with a client who is breastfeeding. Which of the following instructions should the nurse include?

(A) "White blood cell count is an indicator of anemia.”
White blood cell count is not directly related to anemia. Anemia is typically assessed by hemoglobin and hematocrit levels, which reflect the oxygen-carrying capacity of the blood. White blood cell count measures immune system function and can indicate infection or inflammation rather than anemia.

(B) "Urine specific gravity identifies my risk for pregnancy induced hypertension.”
Urine specific gravity is a measure of urine concentration and hydration status, and it is not typically used to identify the risk of pregnancy-induced hypertension (preeclampsia). Preeclampsia is diagnosed based on symptoms such as hypertension (high blood pressure) and proteinuria (protein in the urine), along with other criteria.

(C) "Platelet count identifies if I am at risk for bleeding.”
Platelet count is a laboratory test that measures the number of platelets in the blood. Platelets are essential for blood clotting, so a low platelet count (thrombocytopenia) can indicate an increased risk of bleeding, which is pertinent to pregnancy, especially in cases of conditions like gestational thrombocytopenia or preeclampsia.

(D) "Sedimentation rate checks for signs of cancer.”
The sedimentation rate (ESR or sed rate) is a nonspecific test that measures inflammation in the body, but it is not used to check for signs of cancer specifically. Elevated sedimentation rate can indicate various inflammatory conditions such as infection, autoimmune diseases, or chronic inflammatory disorders. It is not a primary test for cancer diagnosis.

(D) "I might be experiencing preterm labor if walking stops my contractions."
Walking or changing positions may temporarily alleviate contractions in some cases, but this does not necessarily indicate preterm labor. In fact, true preterm labor contractions typically continue despite activity changes. Therefore, this statement does not demonstrate an accurate understanding of preterm labor signs.