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Journal Article
Observational Study
Switching from high-efficacy lipid-lowering therapies [atorvastatin or rosuvastatin] to simvastatin and the results on low-density lipoprotein cholesterol level.
Journal of the Medical Association of Thailand 2015 January
BACKGROUND: In Thai National List of Essential Drugs in 2010, simvastatin is the only medication on the list for the statin group. Patients who previously prescribed other groups of statin were recommended to switch to simvastatin.
OBJECTIVE: Comparison of lipid low-density lipoprotein cholesterol (LDL) levels before and after switching from rosuvastatin or atorvastatin to simvastatin.
MATERIAL AND METHOD: The study was a retrospective observational study performed in patients older than 18 year-old who were enrolled as an outpatient at Siriraj Hospital during October 2009 and October 2010. From these patients who were switched from atorvastatin or rosuvastatin to simvastatin, LDL level was compared between before and after switching to simvastatin.
RESULTS: Of 276 patients who were switched from atorvastatin to equivalent dose simvastatin, LDL levels increased from 106.20 ± 33.47 mg/dl to 109.61 ± 39.62 mg/dl (p = 0.089). Of 228 patients who were switched from rosuvastatin to a less than equivalent dose simvastatin, LDL levels increased from 112.73 ± 45.94 mg/dl to 114.49 ± 42.70 mg/dl (p = 0.437).
CONCLUSION: In the patients who were switched from atorvastatin and rosuvastatin to simvastatin, LDL levels before and after being switched was not significantly different. Moreover patients who had switched from rosuvastatin to a less than equivalent dose ofsimvastatin still had no significant increases in LDL levels after switching.
OBJECTIVE: Comparison of lipid low-density lipoprotein cholesterol (LDL) levels before and after switching from rosuvastatin or atorvastatin to simvastatin.
MATERIAL AND METHOD: The study was a retrospective observational study performed in patients older than 18 year-old who were enrolled as an outpatient at Siriraj Hospital during October 2009 and October 2010. From these patients who were switched from atorvastatin or rosuvastatin to simvastatin, LDL level was compared between before and after switching to simvastatin.
RESULTS: Of 276 patients who were switched from atorvastatin to equivalent dose simvastatin, LDL levels increased from 106.20 ± 33.47 mg/dl to 109.61 ± 39.62 mg/dl (p = 0.089). Of 228 patients who were switched from rosuvastatin to a less than equivalent dose simvastatin, LDL levels increased from 112.73 ± 45.94 mg/dl to 114.49 ± 42.70 mg/dl (p = 0.437).
CONCLUSION: In the patients who were switched from atorvastatin and rosuvastatin to simvastatin, LDL levels before and after being switched was not significantly different. Moreover patients who had switched from rosuvastatin to a less than equivalent dose ofsimvastatin still had no significant increases in LDL levels after switching.
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