ENDOCARDITIS-ORGANISMS

SUMMARY

1. S. aureus: causes 80-90% of staphylococcal IE and is the most common cause of acute IE. Seen in IVDU & prosthetic valves.
2. Gram-negative organisms: causes of acute IE. Seen in IVDU & prosthetic valves.

3. Strep: accounts for 60-80% of all endocarditis & causes subacute IE. S. bovis is assoc. with GI malignancy in the elderly, polyps & diverticulosis. Seen in IVDU & prosthetic valves.
4. Enterococcus: causes subacute IE and found in older men with genitourinary disease or after instrumentation or surgery.

Reference(s)

Wilkinson, I., Furmedge, D. and Sinharay, R. (2017). Oxford handbook of clinical medicine. Oxford: Oxford University Press. Get it on Amazon.
Feather, A., Randall, D. and Waterhouse, M. (2020). Kumar And Clark’s Clinical Medicine. 10th ed. S.L.: Elsevier Health Sciences. Get it on Amazon.
Hannaman, R. A., Bullock, L., Hatchell, C. A., & Yoffe, M. (2016). Internal medicine review core curriculum, 2017-2018. CO Springs, CO: MedStudy.
Therapeutic Guidelines. Melbourne: Therapeutic Guidelines Limited. https://www.tg.org.au [Accessed 2021].