A 37-year-old male presents to the emergency department with fever. Chest x-ray shows multiple patchy infiltrates in both lungs. Echocardiography and blood cultures suggest a diagnosis of acute bacterial endocarditis limited to the tricuspid valve. Which of the following is the most probable etiology?
سؤال مجاني 5 من 10 اليوم · اشترك وكمّل بدون حد
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الإجابة والشرح
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الإجابة: B. Illicit drug use
Acute bacterial endocarditis limited to the tricuspid valve with multiple patchy lung infiltrates (septic emboli) is the classic picture of IV (illicit) drug use. Overall the mitral valve is most often affected, but in IV drug users it is the tricuspid valve. Rheumatic and congenital disease mainly predispose left-sided valves.
ليش كل خيار صح أو غلط
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A
ليش غلط
Congenital defects (e.g., VSD, bicuspid aortic valve) are general risk factors for IE, but the source links tricuspid involvement specifically to intravenous drug use.
✓ CARDIOLOGY- VHD+IE.pdf · p. 16 -
B
ليش صح
Overall the mitral valve is most affected, but in IV drug users the tricuspid valve is the most affected, usually with S. aureus.
✓ Cardiology 🫀.pdf · p. 32 -
C
ليش غلط
Rheumatic fever damages mainly the mitral and then the aortic valve, so it does not explain isolated acute tricuspid endocarditis.
✓ 9• Valvular Heart Diseases [Notes].pdf · p. 3 -
D
ليش غلط
Rheumatoid arthritis appears in the source as a cause of aortic root dilation (aortic insufficiency), not as the cause of acute tricuspid endocarditis.
✓ HEART VALVE DISEASE.pdf · p. 2 -
E
ليش غلط
SLE causes Libman-Sacks (nonbacterial) endocarditis with small warty vegetations on both sides of the leaflets, which rarely becomes infective. It is not the usual cause of acute bacterial tricuspid endocarditis.
✓ Step Up To Medicine 6th (Valvular Heart Disease).pdf · p. 13
- المصدر
- Cardiology 🫀.pdf · p. 32
CARDIOLOGY- VHD+IE.pdf · p. 16 - المحاضرة
- Valvular Heart Disease · Cardiology · Module B
- ظهر في
- Cardio bank