A nurse is reinforcing teaching with a parent of a child who has asthma about the administration of montelukast. Which of the following statements by the parent indicates an understanding of the teaching?

A. Negative varicella titer: A negative varicella titer indicates the client is susceptible to chickenpox. While vaccination is recommended postpartum, this finding does not require urgent intervention during pregnancy because live vaccines cannot be given while pregnant.

B. Rubella titer nonimmune: A nonimmune rubella titer identifies susceptibility to rubella. Vaccination is provided postpartum, not during pregnancy, so immediate follow-up during the current pregnancy is not required.

C. Positive Rh factor: A positive Rh factor indicates the client is Rh-positive, which poses no risk for hemolytic disease of the newborn. No immediate intervention is required; routine monitoring continues.

D. Positive serologic test for syphilis: A positive syphilis test requires prompt follow-up because untreated maternal syphilis can cause miscarriage, stillbirth, or congenital infection. Early treatment with antibiotics during pregnancy is critical to prevent complications for both mother and fetus.

A. Massage the lower leg in smooth, long strokes: Massaging the lower leg after knee arthroplasty increases the risk of dislodging a thrombus, especially in the early postoperative period when the client is at high risk for deep vein thrombosis. Mechanical manipulation of the limb should be avoided to reduce embolic risk.

B. Place a pillow under the client's surgical knee: Placing a pillow under the knee promotes flexion and can lead to joint contractures. After knee arthroplasty, the knee should be kept in extension to support proper alignment and prevent stiffness. A pillow may be placed under the calf instead if elevation is needed.

C. Use the continuous passive-motion machine intermittently: Continuous passive-motion machines are used early after knee arthroplasty to improve joint mobility, reduce stiffness, and promote circulation. Intermittent use as prescribed helps maintain range of motion without overfatiguing the joint. This intervention supports functional recovery and rehabilitation.

D. Apply warm, moist packs to the surgical site: Warm packs increase blood flow and may worsen postoperative swelling or bleeding at the surgical site. Cold therapy is preferred in the immediate postoperative period to reduce inflammation, pain, and edema. Warm applications are not appropriate at this stage of recovery.