The nurse is percussing the patient's abdomen. Which percussion tone should be heard over the liver?

A. Bathe the newborn with hypoallergenic soap twice daily to reduce the rash: Frequent bathing can disrupt the delicate acid mantle of the neonatal skin and cause irritation. Erythema toxicum is an idiopathic inflammatory response that does not respond to topical cleansing agents. Over-washing may exacerbate skin dryness without resolving the eosinophilic papules.

B. Apply a thin layer of antibiotic ointment to prevent secondary infection: This rash is a sterile condition characterized by eosinophilic infiltration rather than bacterial colonization. The use of prophylactic antibiotics is clinically unnecessary and may contribute to antimicrobial resistance. Topical ointments can also block pores and cause further cutaneous irritation.

C. Educate the parents that the condition is benign and requires no treatment: Erythema toxicum neonatorum is a self-limiting, non-pathological eruption common in healthy full-term infants. It typically resolves spontaneously within 7 to 14 days without any medical intervention. Reassurance is the primary nursing responsibility to alleviate parental anxiety.

D. Isolate the newborn to prevent spread to other infants: This condition is not infectious or transmissible, as it is an internal physiological reaction. Isolation protocols are reserved for contagious pathogens and would unnecessarily separate the infant from the mother. The rash does not pose a risk to the nursery population.

E. Give antifungal treatments to the newborn: The lesions of erythema toxicum are not fungal in origin and will not respond to antimycotic medications. Administering unnecessary drugs to a neonate carries risks of systemic side effects and toxicity. Proper diagnosis relies on recognizing the typical migratory pattern of the rash.

A. 0/5
This indicates no muscle contraction at all. It would apply if the patient had complete paralysis and could not initiate any movement. Since Marcus can elevate his shoulders, this is not correct.

B. 1/5
This means a trace contraction is palpable or visible, but no movement occurs. Again, Marcus is able to move his shoulders against gravity, so this does not fit.

C. 2/5
This score is given when the patient can move the joint only if gravity is eliminated, but cannot overcome gravity. Marcus can elevate his shoulders against gravity, so this is not accurate.

D. 3/5
This represents full range of motion against gravity but not against resistance. Marcus can elevate his shoulders, but when the nurse applies resistance, he cannot maintain the movement. This matches his presentation.

E. 4/5
This indicates full range of motion against gravity and some resistance, but less than normal strength. If Marcus had been able to elevate his shoulders and withstand the nurse’s pressure partially, this would apply. However, he was unable to resist at all, so 4/5 is not correct.

F. 5/5
This is normal strength, meaning full range of motion against gravity and full resistance. Since Marcus cannot resist the nurse’s pressure, this is not appropriate.