The nurse is caring for a 4-month-old infant in the emergency department. The nurse reviews the infant's medical record and assessment findings. Which of the following conditions should the nurse suspect, and what actions should the nurse take to address that condition, and what parameters should the nurse monitor to assess the infant's progress?

The nurse should suspect that the infant has

Choice A reason: Watching a video game in the playroom is not a good activity for a child who requires airborne precautions, as it may expose the child and other children to the risk of infection. Airborne precautions are used for patients who have diseases that are transmitted by small droplets that can remain suspended in the air and travel over long distances, such as tuberculosis, chickenpox, or measles. The child should stay in a private room with negative air pressure, high-efficiency particulate air (HEPA) filtration, and respiratory protection for health care workers and visitors.

Choice B reason: Putting a large-piece puzzle together is a good activity for a child who requires airborne precautions, as it can be done in the child's room and does not involve close contact with others. It is also developmentally appropriate for a 4-year-old child, as it helps to develop fine motor skills, cognitive skills, and problem-solving skills. The nurse should provide the child with a variety of puzzles that are colorful, fun, and challenging, but not frustrating.

Choice C reason: Constructing a model airplane is not a good activity for a child who requires airborne precautions, as it may involve small pieces that can be easily lost, swallowed, or inhaled. It may also be too difficult or complex for a 4-year-old child, who may not have the attention span, dexterity, or patience to complete the task. The nurse should choose activities that are safe, simple, and suitable for the child's age and abilities.

Choice D reason: Pulling a wagon with toys in the hallway is not a good activity for a child who requires airborne precautions, as it may expose the child and other people to the risk of infection. The child should not leave the room unless it is necessary for diagnostic or therapeutic procedures. If the child has to leave the room, the nurse should ensure that the child wears a mask and follows the infection control guidelines. The nurse should also minimize the movement and transport of the child.

Choice A reason: This test measures the level of antibodies that the body produces against the streptolysin O enzyme, which is produced by some strains of streptococcal bacteria. A high level of ASO titer indicates that the child had a recent streptococcal infection, which may trigger rheumatic fever in some cases.

Choice B reason: This test does not directly indicate if the child has rheumatic fever. Rheumatic fever is a complication of untreated or inadequately treated streptococcal infection, which causes inflammation of the heart, joints, skin, and brain. The diagnosis of rheumatic fever is based on clinical criteria, such as the presence of carditis, polyarthritis, chorea, erythema marginatum, or subcutaneous nodules.

Choice C reason: This test does not confirm if the child has immunity to streptococcal bacteria. Immunity is the ability of the body to resist or fight off an infection. A high level of ASO titer does not mean that the child is immune to streptococcal bacteria, but rather that the child was exposed to them recently.

Choice D reason: This test does not indicate if the child has a therapeutic blood level of an aminoglycoside. Aminoglycosides are a class of antibiotics that are used to treat serious bacterial infections, such as endocarditis or septicemia. The blood level of an aminoglycoside is measured by a different test, called a peak and trough level, which determines the effectiveness and safety of the drug.