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Published on: November 17, 2018
The effect of decreasing statin's dosage on LDL-C levels after target levels achieved
1Division of Cerebrovascular Disease, Department of Neurology, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Chang Gung University College of Medicine, Kaohsiung, Taiwan.
Insights
Reducing statin dosage in stroke patients after achieving target low-density lipoprotein cholesterol (LDL-C) levels leads to higher LDL-C. Maintaining statin dosage is recommended unless contraindications exist to prevent lipid profile deterioration.
Area of Science:
- Cardiology
- Neurology
- Pharmacology
Background:
- Statins are proven to reduce cardio-cerebral vascular events.
- Lipid-lowering therapy (LLT) is often suboptimal in stroke patients.
- Statin dosage reduction is common upon achieving target low-density lipoprotein cholesterol (LDL-C) levels.
Purpose of the Study:
- To investigate lipid profile changes after reducing statin dosage in stroke patients who have achieved target LDL-C levels.
- To evaluate the clinical implications of statin dosage adjustments in this patient population.
Main Methods:
- A cohort of 103 stroke patients was followed in an outpatient clinic.
- Patients were divided into two groups: those whose statin dosage was halved (n=22) and those who maintained their initial dosage (n=81).
- Lipid profiles were compared before and after LLT adjustment.
Main Results:
- Patients with reduced statin dosage showed significantly higher follow-up LDL-C levels and a lower percentage of patients achieving LDL-C < 100 mg/dL.
- Across all patients, follow-up LDL-C levels were higher than baseline, with significant increases in total cholesterol and LDL-C in the reduced-dosage group.
- No significant changes in high-density lipoprotein cholesterol or triglyceride levels were observed in either group.
Conclusions:
- Decreasing statin dosage in stroke patients often results in LDL-C levels exceeding 100 mg/dL.
- Maintaining statin dosage is advisable after target levels are achieved, unless absolute contraindications or adverse effects necessitate adjustment.
- Further research is needed to understand the clinical impact of lipid profile changes post-LLT adjustment.
Objective:
Evidences from clinical trials had demonstrated that statins reduce the risk of cardio-cerebral vascular events. But lipid lowering therapy (LLT) was suboptimal in stroke patients and clinically, observation of reducing the dosage of statins is common when target low density lipoprotein cholesterol (LDL-C) level achieved. We aim to explore the changes in lipid profile after reducing statin's dosage when target LDL-C level achieved.
Methods:
One hundred and three consecutive stroke patients follow up at out-patient clinic (44 women, 59 men) were recruited. Twenty two patients had their statin's dosage decreased to half while eighty one patients had their initial statin's dosage maintained after target LDL-C (less than 100mg/dL) level achieved. Lipid profile before and after LLT adjustment were compared.
Results:
The follow-up LDL-C level was significant higher while the percentage of patients with LDL-C level less than 100 mg/dL was significant lower in patients with statin's dosage decreased. For all patients, regardless the adjustment of LLT, the percentage of patients with LDL-C level less than 100 mg/dL was significant lower in follow- up lipid profile comparing with the baseline, but only the follow-up total cholesterol and LDL-C level were significant higher in the patients group with reduced statin's dosage. No significant change was found in follow-up high density-lipoprotein cholesterol and triglyceride level in either group.
Conclusion:
More patients had LDL-C level more than 100 mg/dL after dosage of statins decreased. We suggested that only for absolute contraindication or adverse effects of statins should we adjust LLT, it is better to maintain the dosage of statins after target level achieved. The impact of lipid profile changed after LLT adjustment on clinical outcomes needs further studied.
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