When palpating the child's cervical lymph nodes, the nurse notes that they are tender, enlarged, and warm. The best explanation for this is:.

The correct answer is choice A: Anaphylactic shock.

Choice A rationale:

Anaphylactic shock is the correct answer. Anaphylactic shock is a severe and potentially life-threatening allergic reaction that causes massive vasodilation, capillary leakage, and bronchoconstriction. It can occur rapidly after exposure to an allergen such as certain foods, insect stings, medications, or latex. The release of histamine and other inflammatory mediators leads to systemic vasodilation and increased permeability of blood vessels, resulting in a sudden drop in blood pressure and compromised organ perfusion.

Choice B rationale:

Cardiogenic shock is characterized by inadequate cardiac output due to severe heart dysfunction. It is typically caused by conditions like myocardial infarction, heart failure, or other cardiac issues. While allergic reactions can potentially affect the cardiovascular system, the symptoms described in the question are more indicative of anaphylactic shock.

Choice C rationale:

Neurogenic shock results from disruption of sympathetic nervous system control over blood vessel tone, often due to spinal cord injury or severe emotional distress. This leads to widespread vasodilation and a sudden drop in blood pressure. While it can cause hemodynamic instability, it doesn't specifically involve the hypersensitivity reaction and capillary leaks associated with anaphylactic shock.

Choice D rationale:

Hypovolemic shock is caused by a significant loss of blood volume or bodily fluids, leading to decreased intravascular volume and subsequent inadequate tissue perfusion. This shock type is not directly related to a hypersensitivity reaction or capillary leakage caused by allergic responses. 2 / 2

The correct answer is choice C: Administering penicillin.

Choice A rationale:

Imposing strict bed rest for 4 to 6 weeks. This choice is not the most appropriate therapeutic management for rheumatic fever. While rest is important during the acute phase, strict bed rest for 4 to 6 weeks is excessive and could lead to physical deconditioning and psychological distress for the child.

Choice B rationale:

Administering corticosteroids if chorea develops. This choice is relevant to the management of rheumatic fever but is not the primary treatment. Chorea is a movement disorder that can occur as a complication of rheumatic fever. Corticosteroids may be used to manage chorea symptoms, but they are not the mainstay of treatment for rheumatic fever itself.

Choice C rationale:

Administering penicillin. This is the correct choice. Penicillin is the mainstay of treatment for rheumatic fever. It helps eradicate the group A streptococcal infection that triggers the inflammatory response leading to rheumatic fever. Penicillin is essential to prevent further complications such as rheumatic heart disease.

Choice D rationale:

Avoiding salicylates (aspirin). This choice is also relevant to the management of rheumatic fever. Salicylates, including aspirin, are used to relieve symptoms and reduce inflammation. However, in children with acute rheumatic fever, salicylates are contraindicated due to the risk of developing Reye's syndrome, a serious condition that affects the brain and liver.