A nurse is caring for a toddler who has acute laryngotracheobronchitis and has been placed in a cool mist tent. Which of the following findings indicates that the treatment has been effective?

Choice A reason: This is the most likely source of the child's infection. Rheumatic fever is a complication of an untreated or poorly treated streptococcal infection, such as strep throat or scarlet fever. It usually occurs 2 to 4 weeks after the initial infection and causes inflammation of the heart, joints, skin, and nervous system. The nurse should ask the parent if the sibling was tested and treated for strep throat, and if the child was exposed to the sibling.

Choice B reason: This is not a likely source of the child's infection. Chickenpox is caused by the varicella-zoster virus, not by streptococci. It is a highly contagious disease that causes a blister-like rash, itching, fever, and fatigue. It does not cause rheumatic fever, but it can lead to other complications, such as bacterial skin infections, pneumonia, or encephalitis.

Choice C reason: This is not a likely source of the child's infection. Fifth disease is caused by the parvovirus B19, not by streptococci. It is a mild illness that causes a distinctive red rash on the face, body, and limbs, as well as fever, headache, and sore throat. It does not cause rheumatic fever, but it can affect the production of red blood cells and cause anemia in some people.

Choice D reason: This is not a likely source of the child's infection. Gastritis is the inflammation of the stomach lining, which can be caused by various factors, such as bacteria, viruses, medications, alcohol, or stress. It is not caused by streptococci, nor does it cause rheumatic fever. It can cause symptoms such as abdominal pain, nausea, vomiting, and loss of appetite.

Choice A reason: Placing the client in a private room is not necessary for a client who has a high WBC count, unless they have other indications for isolation, such as an infectious disease. A high WBC count may indicate inflammation, infection, or other conditions that affect the immune system.

Choice B reason: Monitoring the client's temperature every 4 hr is an appropriate action for a nurse to take for a client who has a high WBC count. A fever is a common sign of infection or inflammation, and it may require further intervention, such as antibiotics or antipyretics.

Choice C reason: Administering an antihistamine as prescribed is not related to a high WBC count. Antihistamines are used to treat allergic reactions, which may cause a low WBC count due to the release of histamine from mast cells.

Choice D reason: Encouraging the client to increase fluid intake is not specific to a high WBC count. Fluid intake should be based on the client's hydration status, urine output, and other factors. Increasing fluid intake may help flush out toxins or bacteria, but it is not a priority action for a client who has a high WBC count.