A nurse is assessing a child with suspected infective endocarditis. Which finding is most indicative of this condition?

Choice A rationale Periorbital edema (swelling around the eyes) is a common sign of nephrotic syndrome or other systemic fluid overload states, such as congestive heart failure. While heart failure can be a complication of severe infective endocarditis (IE), periorbital edema is a non-specific finding and not a primary, classic physical finding of the infection itself. Choice B rationale Bounding pulses in the lower extremities are most characteristic of a condition causing a wide pulse pressure, such as a large patent ductus arteriosus (PDA) or aortic regurgitation. While aortic valve damage can occur in IE, the bounding pulse is not a hallmark finding directly resulting from the infectious process. Choice C rationale A high-pitched cry is a non-specific sign of neurological distress or pain in an infant. While systemic infection and potential septic emboli from infective endocarditis could affect the central nervous system, this symptom is not a primary or expected clinical manifestation of the localized heart valve infection. Choice D rationale Splinter hemorrhages are small, linear, dark-red streaks that appear under the nails. They are a classic peripheral sign of infective endocarditis caused by microemboli (tiny fragments of the infected vegetation) lodging in the distal capillaries of the nail bed, making this a highly indicative finding.