A child is diagnosed with Legg-Calvé-Perthes disease.
The nurse knows that a key focus of nursing care for this child is:

Choice A rationale

Staphylococcus aureus is the most prevalent bacterial pathogen responsible for osteomyelitis, a bone infection. This bacterium possesses virulence factors such as adhesins, which enable it to adhere to bone tissue, and various toxins that contribute to tissue damage and inflammation. It can enter the bone through direct inoculation, contiguous spread, or hematogenous dissemination.

Choice B rationale

Haemophilus influenzae can cause invasive infections, including meningitis and epiglottitis, particularly in unvaccinated children. While it can cause localized infections, it is not a common cause of osteomyelitis. Its primary colonization sites and mechanisms of infection are generally distinct from those leading to bone infections.

Choice C rationale

Escherichia coli is a common inhabitant of the gastrointestinal tract and a frequent cause of urinary tract infections and sepsis, particularly in neonates. While it can cause osteomyelitis, especially in specific populations such as neonates or individuals with compromised immune systems, it is significantly less common than Staphylococcus aureus as an overall cause.

Choice D rationale

Streptococcus pneumoniae is a leading cause of bacterial pneumonia, otitis media, and meningitis. While it can cause invasive infections and has been implicated in rare cases of osteomyelitis, it does not possess the same propensity for bone tissue colonization as Staphylococcus aureus, making it a much less common etiologic agent for bone infections.

Choice A rationale

Performing a fasciotomy is a surgical procedure, not an initial nursing intervention. While it may be necessary to relieve compartment syndrome, it is outside the scope of nursing practice and is typically performed by a physician. The nurse's role is to identify the signs and symptoms and escalate to the medical team for this definitive treatment.

Choice B rationale

Loosening the cast dressings or bandages directly addresses the potential cause of compartment syndrome by reducing external compression. This action aims to improve blood flow and nerve function by alleviating pressure on the neurovascular structures within the confined space. This can prevent further tissue ischemia and damage.

Choice C rationale

Elevating the affected limb above heart level can paradoxically worsen compartment syndrome. Elevation decreases arterial perfusion pressure, further compromising blood flow to the already ischemic tissues within the rigid fascial compartment. This can exacerbate tissue hypoxia and cellular damage, increasing the risk of irreversible injury.

Choice D rationale

Applying ice to the affected area causes vasoconstriction, which would further reduce blood flow to the compromised tissues within the compartment. This decrease in perfusion would exacerbate ischemia and hypoxia, potentially worsening tissue damage and accelerating the progression of compartment syndrome. Therefore, ice application is contraindicated.