Infective endocarditis, which finding is most directly linked to embolic phenomena?

Infective endocarditis, which finding is most directly linked to embolic phenomena?

• A. Janeway lesions on palms and soles
• B. Osler nodes on fingers
• C. Splinter hemorrhages under the nails
• D. Roth spots in the retina

Answer: (C)

Embolic phenomena in infective endocarditis come from vegetations on the valves that shed fragments into the bloodstream, lodging in small vessels and causing new hemorrhages or infarcts. Splinter hemorrhages under the nails are tiny linear hemorrhages from microemboli occluding nail-bed capillaries, a direct sign of distal microvascular embolization. Other signs like Osler nodes and Roth spots are more related to immune complex–mediated vasculitis or microinfarction, while painless skin lesions can reflect septic emboli but are not as direct a measure of embolization as nail-bed microvascular occlusion. So splinter hemorrhages most directly reflect embolic activity from the endocarditis vegetations.

Embolic phenomena in infective endocarditis come from vegetations on the valves that shed fragments into the bloodstream, lodging in small vessels and causing new hemorrhages or infarcts. Splinter hemorrhages under the nails are tiny linear hemorrhages from microemboli occluding nail-bed capillaries, a direct sign of distal microvascular embolization. Other signs like Osler nodes and Roth spots are more related to immune complex–mediated vasculitis or microinfarction, while painless skin lesions can reflect septic emboli but are not as direct a measure of embolization as nail-bed microvascular occlusion. So splinter hemorrhages most directly reflect embolic activity from the endocarditis vegetations.