A public health nurse is caring for a group of clients who experienced mold exposure in their home environment. Which of the following clients should the nurse identify as at risk for adverse effects of mold overgrowth?

Rationale for correct choices

• heparin 30 units/kg IV bolus once: The diagnostic ultrasound confirms a thrombus in the right leg, indicating acute DVT. Anticoagulation with heparin is the first-line intervention to prevent clot extension and pulmonary embolism. The lab values (normal platelets, normal INR) show no contraindication to starting anticoagulation.

• acetaminophen 650 mg PO every 4 hr PRN: Acetaminophen is appropriate for managing the client’s pain (rated 6/10) without increasing bleeding risk. NSAIDs such as ibuprofen are avoided in DVT because they can impair platelet function and increase bleeding risk once anticoagulation is initiated.

Rationale for incorrect choices

• initiating fluid restriction: Fluid restriction is typically used in conditions like heart failure or hyponatremia, not DVT. Adequate hydration is beneficial in DVT because it helps maintain blood viscosity and supports circulation without affecting clot stability.

• maintaining the extremity below the level of the heart: Lowering the extremity increases venous pressure and can worsen swelling. For DVT, the extremity is usually elevated to promote venous return and reduce edema, so this option does not align with recommended care.

• administering cold packs to the extremity: Cold therapy can cause vasoconstriction and slow venous blood flow, which may worsen thrombosis. Warm compresses improve circulation but are used cautiously and only with provider guidance.

Rationale:

A. Slow down the oxytocin infusion: Contractions occurring every 50 seconds and lasting 2 minutes indicate severe uterine hyperstimulation, which reduces placental blood flow and contributes to late decelerations. Slowing or stopping the oxytocin helps decrease contraction intensity and frequency, improving fetal oxygenation.

B. Administer oxygen at 2 L/min per nasal cannula: Oxygen administration can support fetal oxygenation, but 2 L/min via nasal cannula delivers minimal benefit in an acute distress situation. Oxygen would be used as a supportive measure after correcting the cause of the late decelerations. The first action is reducing uterine activity by adjusting the oxytocin infusion.

C. Place the client in a lithotomy position for delivery: Lithotomy positioning is used during the second stage of labor but is inappropriate when the fetus shows signs of distress. It does not relieve uterine hyperstimulation or improve placental blood flow. Positioning that enhances perfusion, such as side-lying, would be more beneficial after reducing the oxytocin.

D. Increase the rate of IV fluid infusion of lactated Ringers: Increasing IV fluids may help improve maternal circulation, but it does not directly resolve contractions that are too frequent or prolonged. Fluids can be an adjunct intervention but should not occur before decreasing oxytocin in the presence of late decelerations.