A 40-year-old female presented in the clinic with painful erythematous subcutaneous nodules on the tips of digits, nontender hemorrhagic macules on the palms or soles, petechiae, and splinter hemorrhages under the nails. Which of the following is the cause of underlying presentation?
سؤال مجاني 2 من 10 اليوم · اشترك وكمّل بدون حد
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الإجابة والشرح
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الإجابة: C. Endocarditis
Painful nodules on the finger tips (Osler nodes), painless hemorrhagic macules on palms/soles (Janeway lesions), petechiae and splinter hemorrhages are the classic peripheral stigmata of infective endocarditis. Platelet dysfunction could cause petechiae but not Osler nodes or Janeway lesions.
ليش كل خيار صح أو غلط
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A
ليش غلط
Platelet disorders cause superficial bleeding (petechiae, purpura: non-blanching red/purple spots). They do not explain painful digit nodules or Janeway lesions.
✓ HEME-05 Platelet Disorders [Notes].pdf · p. 9 -
B
ليش غلط
Polycythemia vera is a bone-marrow disorder with raised RBC mass (JAK-2 mutation), not a source of Osler nodes, Janeway lesions or splinter hemorrhages.
✓ Aproach to Polycythemia.pdf · p. 2 -
C
ليش صح
Infective endocarditis causes painful Osler nodes, splinter hemorrhages, Janeway lesions and Roth spots from showered emboli and immune deposition.
✓ Step Up To Medicine 6th (Valvular Heart Disease).pdf · p. 11 -
D
ليش غلط
Lupus affects the valves through Libman-Sacks nonbacterial warty vegetations, which may give regurgitant murmurs. The painful finger-tip nodules and palm/sole lesions here are classic signs of infective endocarditis instead.
✓ Step Up To Medicine 6th (Valvular Heart Disease).pdf · p. 13
- المصدر
- Step Up To Medicine 6th (Valvular Heart Disease).pdf · p. 11
Step Up To Medicine 6th (Valvular Heart Disease).pdf · p. 12 - المحاضرة
- Valvular Heart Disease · Cardiology · Module B
- ظهر في
- Cardio bank