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Acute myopathy after liver transplantation
J V Campellone1, D Lacomis, D J Kramer
1Department of Neurology, The University of Pittsburgh Medical Center, PA, USA.
Neurology
|January 27, 1998
Summary
Acute myopathy, causing significant weakness, affects 7% of liver transplant recipients. Higher illness severity, dialysis, and glucocorticoid use are key risk factors for this condition.
Area of Science:
- Nephrology
- Neurology
- Transplantation
Background:
- Acute myopathy is a frequent complication in critically ill patients, including liver transplant recipients.
- It contributes to prolonged intensive care unit (ICU) stays and increased morbidity.
Purpose of the Study:
- To determine the incidence and identify risk factors for acute myopathy following orthotopic liver transplantation (OLTx).
Main Methods:
- Prospective assessment of 100 adult patients post-OLTx for muscle weakness.
- Electrodiagnostic studies and muscle biopsies were performed on affected patients.
- Risk factors were compared between myopathy patients and control subjects.
Main Results:
- Seven patients (7%) developed acute persistent weakness post-OLTx, consistent with necrotizing myopathy.
- Histopathology revealed myosin thick filament loss in affected patients.
- Higher illness severity scores, dialysis requirement, and increased glucocorticoid doses were associated with myopathy development.
- Myopathy patients had longer ICU stays.
Conclusions:
- Acute myopathy is a significant cause of morbidity in 7% of OLTx patients, characterized by necrotizing myopathy.
- Greater illness severity and renal failure requiring dialysis are risk factors.
- Further research into reducing corticosteroid exposure in high-risk patients is warranted.