The nurse caring for a patient with implanted radiation should not care for another patient with a radiation source to decrease the radiation exposure to the nurse. Additionally, the nurse should not care for patients with infections to prevent spreading it to the immunocompromised patient with breast cancer. Therefore, the best patient assignment is the patient with neurogenic shock. The patient with severe peptic ulcer disease (PUD) likely has an infection with Helicobacter pylori that caused the PUD. The patient with chills, hemoptysis, and night sweats is exhibiting signs of tuberculosis.