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[Prolonged anuria during bacterial endocarditis]
Insights
Subacute streptococcal endocarditis caused prolonged anuria due to kidney damage including glomerulonephritis and interstitial nephritis. Successful valve repair improved renal function, stopping hemodialysis.
Area of Science:
- Nephrology
- Cardiology
- Infectious Diseases
Background:
- Subacute bacterial endocarditis can lead to severe systemic complications.
- Kidney involvement in endocarditis is a known but complex manifestation.
Observation:
- A patient with subacute streptococcal endocarditis presented with a 3-month anuria.
- Kidney investigations revealed arterial aneurysms, renal infarction, and diffuse endo-capillary proliferative glomerulonephritis with immune deposits.
Findings:
- The primary cause of renal failure was likely interstitial nephritis, possibly metastatic.
- Glomerulonephritis showed immunoglobulin and complement deposition, indicating an immune-mediated process.
Implications:
- This case highlights the diverse and severe renal pathology associated with infective endocarditis.
- Correction of the underlying valvular heart disease is crucial for renal recovery in such cases.
- Early recognition and management of cardiac and renal complications are essential.
Abstract:
The authors report a case of anuria which lasted 3 months in a patient with sub-acute streptoccocal endocarditis. The investigations led to the discovery, at the level of the kidneys, of arterial aneurysms, renal infarction and diffuse endo-capillary proliferative glomerulonephritis, with deposits of complement and immunoglobulin and finally, interstitial nephritis, perhaps of metastatic origin, which was probably the lesion responsible for the renal failure. Renal function progressively improved and hemodialysis was stopped at the 6th month after correction of the mitral and aortic valve disease.