A 46-year-old male , an IV drug abuser presents to OPD with complaints of fatigue, malaise and rigors. His temperature was 38.5degC, pulse -84/min, BP- 130/80 mm Hg .On cardiovascular examination , pan-systolic murmur was heard , loudest at the left sternal border. 3 sets of blood cultures were taken consecutively . Transthoracic echocardiography (TTE) was done , which revealed vegetation on the tricuspid valve with TR.From the given history , which organism is most likely to be positive in blood cultures?
Correct Answer: Staphylococcusaureus
Description: From the given history - Probable diagnosis is Infective endocarditis * H/o IV drug abuse - most common organism- Staphylococcus aureus- Culture positive endocarditis. Most common organism in IV drug abusers causing Infective Endocarditis Overall Staphylococcus aureus Right side of Hea Staphylococcus aureus Left side of Hea Enterococcus faecium Single +ve blood culture for Coxiella Burnetii is considered a major criteria for diagnosis of IE. Culture negative endocarditis- HACEK group.
Category:
Medicine
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now