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Fluvastatin as co-medication in heart transplant recipients with elevated creatine-kinase
S Sadoni1, I Kaczmarek, O Delgado
1Department of Cardiac Surgery, Grosshadern University Hospital, Ludwig-Maximilians-University, Munich, Germany. Sebastian.Sadoni@med.uni-muenchen.de
Insights
Switching heart transplant patients to fluvastatin safely reduced elevated creatine-kinase levels. This statin conversion may help patients continue lipid-lowering therapy despite side effects from other statins.
Area of Science:
- Cardiology
- Pharmacology
- Transplantation Medicine
Background:
- Statins are crucial for reducing mortality and transplant vasculopathy in heart transplant recipients.
- Common statins (simvastatin, atorvastatin) interact with immunosuppressants, causing side effects and therapy withdrawal.
- Fluvastatin offers a safer alternative due to minimal cytochrome P-450 3A4 pathway interaction.
Purpose of the Study:
- To evaluate the impact of switching heart transplant patients with elevated creatine-kinase (CK) to fluvastatin.
- To assess the safety and efficacy of fluvastatin in managing statin-related side effects in this population.
Main Methods:
- 23 heart transplant patients with elevated CK levels were switched to an equivalent dose of fluvastatin.
- Creatine-kinase, lipid profiles (HDL, LDL, triglycerides), ALT, AST, and creatinine were monitored at baseline and at 3, 6, 9, and 12 months.
Main Results:
- Creatine-kinase levels significantly decreased by 25% at 6 months and 38% at 9 months (P < .05).
- HDL-cholesterol significantly decreased (8% at 6 months, 23% at 9 months; P < .05).
- Triglycerides showed a significant increase at 3 months (18%; P < .05), with no significant changes in other lipid parameters or liver/kidney function markers.
Conclusions:
- Conversion to fluvastatin is safe and effectively reduces elevated creatine-kinase in heart transplant recipients.
- Fluvastatin may help maintain lipid-lowering therapy in patients experiencing side effects from conventional statins.
- Potential initial impacts on HDL-cholesterol and triglycerides should be considered during fluvastatin therapy.
Background:
Statins reduce the risk for transplant vasculopathy and mortality among heart transplant recipients. Interactions between commonly used statins (ie, simvastatin, atorvastatin) and immunosuppressant drugs lead to side effects or withdrawal of statin therapy. Fluvastatin shows fewer interactions with the immunosuppressant agents because it is not metabolized via the cytochrome P-450 3A4 pathway like most immunosuppressants, steroids, or other statins. This study investigated the impact of a switch from other statins to fluvastatin in heart transplant recipients who revealed elevated creatine-kinase levels.
Methods:
A total of 23 heart transplant patients with elevated creatine-kinase levels were included in this study. Statins were replaced with an equal dosage of fluvastatin. We measured on the day of replacement as well as there after at 3, 6, 9, and 12 months creatine-kinase, lipid status, ALT, AST, and creatinine levels.
Results:
After 6 months creatine-kinase showed a significant reduction of 25% (P < .05) and after 9 months of 38% (P < .05). The HDL-cholesterol levels were significantly reduced at 6 months (8%; P < .05) and 9 months (23%; P < .05). At 3 months, triglyceride levels were significantly elevated (18%; P < .05). No differences were observed in ALT, AST, creatinine, total, and LDL-cholesterol at any time.
Conclusion:
A conversion from commonly used statins to fluvastatin in heart transplant patients with elevated creatine-kinase was safe, leading to a significant reduction in creatine-kinase levels. Except for an initial raise in triglycerides and a lowering of HDL-cholesterol, no changes in lipid status were seen. This conversion might help to maintain lipid-lowering therapy in transplant recipients who show side effects using conventional statins.
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