A patient develops red eyes 2 days after an episode of malaria probable cause is:

Correct Answer: B

Rationale: Red eyes post-malaria suggest an ocular complication. Conjunctivitis (choice A) causes redness but isn't typically linked to malaria unless secondary infection occurs. Anterior uveitis (choice B), inflammation of the iris and ciliary body, is a rare but documented malaria sequel, possibly from immune response or parasite-related damage, presenting with redness, pain, and photophobia. Viral keratitis (choice C) affects the cornea and is unrelated to malaria. Endophthalmitis (choice D), a severe intraocular infection, is unlikely without trauma or surgery. B is correct, as anterior uveitis aligns with malaria's systemic inflammatory effects. Nurses should assess eye symptoms, refer to ophthalmology, and manage pain, preventing vision loss in such cases.

Correct Answer: A

Rationale: Apgar score assesses newborn vitality at 1 and 5 minutes post-birth across five criteria: heart rate, respiration, muscle tone, reflex, color. Heart rate (choice A) is primary; absent (<60 bpm = 0, <100 = 1, >100 = 2) dictates immediate resuscitation, making it the most critical. Respiratory rate (choice B) follows, but weak/absent breathing often ties to heart rate. Meconium (choice C) isn't scored directly, though it flags distress. Moro reflex (choice D) tests tone/reflex, secondary to vitals. A is correct, as heart rate drives initial intervention. Nurses prioritize it, ensuring rapid response to stabilize the infant.

Correct Answer: B

Rationale: Precipitous birth outside controlled settings demands urgent action. Tying/cutting the cord (choice A) is secondary; delay poses no immediate risk unless bleeding occurs. Establishing an airway (choice B) is first, as newborns must breathe independently clearing mucus or stimulating crying ensures oxygenation, critical within the golden minute. Checking the fundus (choice C) assesses maternal bleeding, a later priority. Transport (choice D) follows stabilization. B is correct, per neonatal resuscitation guidelines. Nurses clear airways, warm the infant, and then address cord and maternal needs, ensuring survival.

Correct Answer: B

Rationale: The coronary vessels are unique because they respond to sympathetic stimulation with vasodilatation, unlike most other blood vessels which constrict. Sympathetic stimulation activates the fight-or-flight response, increasing heart rate and oxygen demand. To meet this demand, the coronary arteries dilate to supply more blood to the heart muscle. Vasoconstriction (A) is incorrect as it would reduce blood flow, countering the heart's needs during stress. Decreases in force of contractility (C) or cardiac output (D) are unrelated to the vascular response and pertain more to myocardial function, not the coronary vessels' behavior. This vasodilatation is mediated by beta-adrenergic receptors, ensuring adequate perfusion during heightened activity, making B the correct choice.

Correct Answer: C

Rationale: A blood sugar level of 50 mg/dl indicates hypoglycemia, a stress state triggering the body's fight-or-flight response. The client will appear restless due to the brain's reliance on glucose; low levels cause agitation as a protective mechanism to signal distress. The body attempts to increase glucose via glycogenolysis and gluconeogenesis (opposite of A), so decreasing glucose further is incorrect. Halting sex hormone release (B) occurs in chronic stress, not acute hypoglycemia. Blood pressure may rise (D) due to catecholamine release, but restlessness is the most immediate and observable response in this acute scenario, aligning with early stress symptoms. Thus, C is correct as it directly reflects the patient's presentation during a hypoglycemic crisis.