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Infective endocarditis complicated with rapidly progressive glomerulonephritis: a case report
1Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, R.O.C.
Zhonghua Yi Xue Za Zhi = Chinese Medical Journal; Free China Ed
|June 1, 1996
Summary
Infective endocarditis can cause rapidly progressive glomerulonephritis, a kidney disease. This case study shows successful treatment with antibiotics and mitral valve replacement, leading to full recovery.
Area of Science:
- Nephrology
- Cardiology
- Infectious Diseases
Background:
- Infective endocarditis (IE) is a serious infection affecting heart valves.
- Rapidly progressive glomerulonephritis (RPGN) is a severe kidney disease characterized by rapid loss of kidney function.
- IE can rarely present with renal complications, including RPGN.
Observation:
- A 26-year-old man presented with fever, chills, and acute kidney injury.
- Cardiac examination revealed a new pansystolic murmur, and echocardiography showed a mitral valve vegetation.
- Laboratory findings included anemia, positive rheumatoid factor, circulating immune complexes, elevated inflammatory markers, and nephritic urinalysis.
- Renal biopsy confirmed crescentic glomerulonephritis.
Findings:
- Blood cultures were negative for common pathogens.
- Intravenous penicillin therapy led to improved renal function and resolution of immune complexes.
- Mitral valve replacement was performed due to cardiac insufficiency and vegetation risk.
- Complete resolution of symptoms and laboratory abnormalities occurred post-surgery.
Implications:
- This case demonstrates that infective endocarditis can trigger RPGN.
- Combined antibiotic therapy and surgical intervention can effectively treat IE-associated RPGN.
- Early diagnosis and multidisciplinary management are crucial for favorable outcomes in such complex cases.