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[Immune complex-mediated glomerulonephritis associated with infective endocarditis with aortic valve vegetation]
K Yoshida1, H Matsubara, N Shibatani
1Department of Medicine II, Kansai Medical University, Osaka, Japan.
Nihon Jinzo Gakkai Shi
|September 30, 1998
Summary
This case report details a rare association between immune complex-mediated glomerulonephritis and infective endocarditis. The patient presented with kidney injury and aortic valve vegetation, ultimately succumbing to septic shock.
Area of Science:
- Nephrology
- Cardiology
- Infectious Diseases
Background:
- A 61-year-old male presented with rapidly progressive azotemia and aortic valve vegetation causing regurgitation.
- Biochemical tests indicated immunocomplex formation and decreased complement levels.
- Kidney biopsy revealed glomerulonephritis with crescents and mesangial proliferation.
Observation:
- The patient refused surgical valve replacement, opting for non-invasive treatment including hemodialysis and penicillin G.
- Initial treatment led to transient improvements in azotemia and cardiac function.
- Despite treatment, aortic valve vegetation size did not decrease, and causative bacteria remained unidentified.
Findings:
- Immune complex-mediated glomerulonephritis was diagnosed in conjunction with infective endocarditis.
- The patient developed congestive heart failure and severe pneumonia.
- The patient ultimately died of septic shock.
Implications:
- This case highlights a rare clinical presentation of glomerulonephritis secondary to infective endocarditis.
- It underscores the challenges in managing such complex cases, particularly when patients decline surgery.
- The findings emphasize the critical link between cardiac and renal systems in infectious processes.