|
|
||||||||||
|
J Am Coll Cardiol, 2002; 40:567-572 © 2002 by the American College of Cardiology Foundation |
| Table of contents |
|---|
|
|
|---|
Introduction567
Incidence of Adverse Events568
Mechanism of Myopathy569
Diagnosis569
Management569
Baseline Measurements569
Monitoring for Adverse Reactions and Adjusting Therapy570
Asymptomatic Patients With CK Elevation570
Prevention570
Increased Risk States for Statin-Induced Myopathy570
Clinical Precautions570
Summary571
References571
| Preamble |
|---|
|
|
|---|
| Introduction |
|---|
|
|
|---|
Statins are powerful low-density lipoprotein (LDL)-lowering drugs that are widely used in clinical practice. Results from clinical trials with a mean duration of 5.4 years have demonstrated a decrease in CHD and total mortality, reductions in myocardial infarctions, revascularization procedures, stroke, and peripheral vascular disease (28). These trials documented a benefit in both men and women, primarily in middle-aged and older persons treated in the setting of either primary or secondary prevention. More than 50,000 individuals have been randomized to either a placebo or statin in these trials, and no serious morbidity or increase in mortality was observed in the drug treatment groups. These agents reduce the risk of essentially every clinical manifestation of the atherosclerotic process; they are easy to administer, with good patient acceptance. There are very few drug to drug interactions. Although the experience with the safety of statin therapy outside of clinical trials has not been fully reported, it is reasonable to suspect that the incidence of side effects may be higher in clinical situations where patients are not monitored as closely as they are in clinical trials (9).
The NCEP has published updated guidelines for treatment of high blood cholesterol (Adult Treatment Panel III report) (1). These guidelines are endorsed by the ACC and AHA. They identify elevated LDL cholesterol as the primary target of therapy and establish goals for LDL cholesterol that depend on a patients risk status. The Adult Treatment Panel III report was able to apply rigorous clinical trial evidence to identify additional high-risk individuals for treatment, greatly expanding the number of patients who are candidates for these drugs. These include patients with established CHD, other forms of atherosclerotic disease, diabetes mellitus, multiple risk factors imparting high risk, and severe hypercholesterolemia. In many patients, relatively high doses of statins will be required to achieve LDL cholesterol goals of therapy. In addition, for patients with high triglycerides, nonhigh-density lipoprotein (HDL) cholesterol (LDL + VLDL [very low density lipoprotein] cholesterol) has been identified as a secondary target of therapy. To achieve the nonHDL cholesterol goal, many patients will require statin therapy as well. This broad expansion of statin use will require that increased attention be given to every aspect of statin therapy (i.e., efficacy, safety, and cost-effectiveness).
In view of the demonstrated safety of these agents, both medical professionals and the public were surprised by the recent withdrawal of a relatively new statin, cerivastatin (Baycol), from the market. Cerivastatin was first approved for use in the U.S. in 1997. In August 2001, the manufacturer, Bayer AG, announced the withdrawal of all dosages of its cholesterol-lowering drug with the brand names Baycol/Lipobay (cerivastatin) because of increasingly frequent reports of serious myopathy, including severe and life-threatening rhabdomyolysis. Rhabdomyolysis was reported most frequently when cerivastatin was used at higher doses and, particularly, in combination with another lipid-lowering drug, gemfibrozil (LOPID and generics). At the time of withdrawal, the FDA had received reports of 31 U.S. deaths due to severe rhabdomyolysis associated with the use of cerivastatin, 12 of which involved concomitant gemfibrozil use (http://www.fda.gov/cder/drug/infopage/baycol/). Subsequently, the Wall Street Journal (1/21/02, pg. A10) reported that Bayer AG had indicated that as many as 100 deaths have been linked to Baycol. The FDA reports that the rate of fatal rhabdomyolysis is 16 to 80 times more frequent for cerivastatin as compared to any other statin (10).
| Incidence of adverse events |
|---|
|
|
|---|
The ability of statins to produce myopathy under some circumstances is well established. A common complaint is non-specific muscle aches or joint pains that are generally not associated with significant increases in creatine kinase. In placebo-controlled trials, the incidence of these complaints (generally reported as about 5%) is similar between placebo and active drug therapy, suggesting they may not be drug-related (1217). Nonetheless, in some patients, the temporal association with statin therapy is strong enough to implicate these drugs as a cause of these complaints. Other patients can have mild-to-moderate elevations of creatine kinase without muscle complaints. Again, elevations may be non-specific, but a statin effect often cannot be ruled out.
It is rare that patients treated with a statin exhibit severe myositis characterized by muscle aches, soreness or weakness and associated with elevated creatine kinase levels, generally greater than 10 times the ULN. In this setting, failure to discontinue drug therapy can lead to rhabdomyolysis, myoglobinuria, and acute renal necrosis (18). Myositis is most likely to occur in persons who have complex medical problems and/or who are taking multiple medications. It may rarely occur with statin monotherapy, but it occurs more frequently when statins are used in combination with a variety of medications, including cyclosporine, fibrates, macrolide antibiotics, certain antifungal drugs, and niacin (1921). Some of the drug to drug interactions involve specific interactions with the cytochrome P-450 drug-metabolizing system, especially those involving the 3A4 isozyme (22,23). The combination of statins with a fibrate is attractive for persons who have both high serum cholesterol and high triglycerides or for those who continue to have elevated triglycerides after reaching their LDL-cholesterol target on statin therapy. However, there may be a concern about an increased danger of developing myopathy with this combination. In the past, this combination was thought to be "contraindicated" because of the potential danger of myopathy. More recently, it has been used increasingly with apparent safety in the majority of persons. This combination is now presented by the ATP III report as an option, with careful monitoring, for some forms of dyslipidemia.
The FDA report comparing the rate of fatal rhabdomyolsis among different statins is of considerable importance (10). The FDA performed a detailed review of all reports of fatal rhabdomyolysis in their Adverse Event Reporting System and obtained the number of prescriptions dispensed since marketing of each statin began in the U.S. Fatal rhabdomyolysis was extremely rare (less than 1 death/million prescriptions). As previously noted, the rate of fatal rhabdomyolsis for cerivastatin was far greater than that for other statins (16 to 80 times higher). Even after excluding cases in which cerivastatin was administered with gemfibrozil, the reporting rate for fatal rhabdomyolysis with cerivastatin monotherapy (1.9 deaths per million prescriptions) was 10 to 50 times higher than for other statins. The FDA report also noted that more than 60% of the fatal cases with cerivastain were associated with use of the highest dose (0.8 mg daily). The FDA notes that the data are reporting rates, not incidence rates. Thus, statistically "rigorous comparisons between drugs... are not recommended" (10). Nevertheless, review of these data strongly suggests that there were no clinically important differences in the rate of fatal complications among the five statins now available in the U.S. (atorvastatin, fluvastatin, lovastatin, pravastatin, and simvastatin). Clinicians should consider the rates of severe myopathy as equivalent among all of these approved statins.
The following are summary comments reflecting current experience with these issues:
| Mechanism of myopathy |
|---|
|
|
|---|
| Diagnosis |
|---|
|
|
|---|
| Management |
|---|
|
|
|---|
Monitoring for adverse reactions and adjusting therapy. Once therapy has been initiated, symptoms may appear at any time. If myositis is present or strongly suspected, the statin should be discontinued immediately. Several key points should be kept in mind.
Obtain a CK measurement if the patient reports suggestive muscle symptoms, and compare to CK blood level prior to beginning therapy. Because hypothyroidism predisposes to myopathy, a thyroid-stimulating hormone level should also be obtained in any patient with muscle symptoms.
If the patient experiences muscle soreness, tenderness, or pain, with or without CK elevations, rule out common causes such as exercise or strenuous work. Advise moderation in activity for persons who experience these symptoms during combination therapy.
Discontinue statin therapy (or statin and niacin or fibrate if the patient is on combination therapy) if a CK greater than 10 times the ULN is encountered in a patient with muscle soreness, tenderness, or pain.
If the patient experiences muscle soreness, tenderness, or pain with either no CK elevation or a moderate elevation (3 to 10 times the ULN), follow the patients symptoms and CK levels weekly until there is no longer medical concern or symptoms worsen to the situation described previously (at which point therapy should be discontinued). For patients who develop muscle discomfort and/or weakness and who also have progressive elevations of CK on serial measurements, either a reduction of statin dose or a temporary discontinuation may be prudent. A decision can then be made whether or when to reinstitute statin therapy.
Asymptomatic patients with ck elevation. Prior to the withdrawal of cerivastatin, the ATP III report did not recommend routine ongoing monitoring of CK in asymptomatic patients. If a physician chooses to obtain CK values in asymptomatic patients, particularly those on combination therapy, and CKs are elevated to more than 10 times the ULN, strong consideration should be given to stopping therapy. Following discontinuation, wait for symptoms to resolve and CK levels to return to normal before reinitiating therapy with either drug and use a lower dose of the drug(s) if possible.
Some asymptomatic patients will have moderate (i.e., between 3 and 10 times the ULN) CK elevations at baseline, during treatment, or after a drug holiday. Such patients can usually be treated with a statin without harm. However, particularly careful monitoring of symptoms and more frequent CK measurements are indicated.
| Prevention |
|---|
|
|
|---|
Clinical precautions. Most myopathy associated with statins appears to occur in patients who are at risk for the condition. For this reason, physicians should be aware of several caveats when prescribing statin therapy. Myopathy is more likely to occur at higher statin doses than at lower doses. For this reason, doses should not exceed those required to attain the ATP III goal of therapy. As a rule, statin therapy should be employed more cautiously in older persons, particularly older thin or frail women, but it is not contraindicated in these or other high-risk patients. Among older persons, those with multisystem disease apparently are at higher risk. Patients with diabetes combined with chronic renal failure also appear to be at higher risk for myopathysuch patients should be monitored carefully. In several instances, myopathy has developed when patients were continued on statin therapy during hospitalization for major surgery. Therefore, it probably is prudent to withhold statins during such periods.
Particular attention should be given to drug interactions when employing statin therapy. Although the combination of statin plus fibrate is accompanied by an increased danger of myopathy, the use of moderate statin doses combined with fibrate appears to have a relatively low incidence of myopathy, especially when used in persons without multisystem disease or multiple medications. The combination of statin plus nicotinic acid seemingly carries a lower risk for myopathy than does statin plus fibrate. Finally, physicians should be aware of the dangers of interactions of statins with the other drugs previously listed. These combinations should also be used with caution or avoided altogether. Furthermore, it is important for clinicians prescribing statins to make sure that their patients are aware of these potential drug interactions, because in current practice, a patient may receive prescriptions from many different caregivers.
| Summary |
|---|
|
|
|---|
|
|
| Footnotes |
|---|
1 When citing this document, the American College of Cardiology, American Heart Association, and National Heart, Lung and Blood Institute would appreciate the following citation format: Pasternak RC, Smith SC, Jr., Bairey-Merz CN, Grundy SM, Cleeman JI, Lenfant C. ACC/AHA/NHLBI Advisory on the Use and Safety of Statins. J Am Coll Cardiol 2002;40:56873. ![]()
2 This document is available on the Web sites of the ACC (www.acc.org), the AHA (www.americanheart.org), and the NHLBI (www.nhlbi.nih.gov/guidelines/cholesterol). ![]()
| References |
|---|
|
|
|---|
This article has been cited by other articles:
![]() |
K. Mahmoud, D. D'costa, and S. Dorrian A case of recurrent rapidly progressive lower limb weakness Age Ageing, May 16, 2008; (2008) afn104v1. [Full Text] [PDF] |
||||
![]() |
H. Yasue, Y. Mizuno, E. Harada, T. Itoh, H. Nakagawa, M. Nakayama, H. Ogawa, S. Tayama, T. Honda, S. Hokimoto, et al. Effects of a 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitor, fluvastatin, on coronary spasm after withdrawal of calcium-channel blockers. J. Am. Coll. Cardiol., May 6, 2008; 51(18): 1742 - 1748. [Abstract] [Full Text] [PDF] |
||||
![]() |
J. M Backes, C. V Venero, C. A Gibson, J. F Ruisinger, P. A Howard, P. D Thompson, and P. M Moriarty Effectiveness and Tolerability of Every-Other-Day Rosuvastatin Dosing in Patients with Prior Statin Intolerance Ann. Pharmacother., March 1, 2008; 42(3): 341 - 346. [Abstract] [Full Text] [PDF] |
||||
![]() |
F. R. Westwood, R. C. Scott, A. M. Marsden, A. Bigley, and K. Randall Rosuvastatin: Characterization of Induced Myopathy in the Rat Toxicol Pathol, February 1, 2008; 36(2): 345 - 352. [Abstract] [Full Text] [PDF] |
||||
![]() |
R. A. Preston, P. Harvey, O. Herfert, G. Dykstra, J. W. Jukema, F. Sun, and D. Gillen A Randomized, Placebo-Controlled Trial to Evaluate the Efficacy, Safety, and Pharmacodynamic Interaction of Coadministered Amlodipine and Atorvastatin in 1660 Patients With Concomitant Hypertension and Dyslipidemia: The Respond Trial J. Clin. Pharmacol., December 1, 2007; 47(12): 1555 - 1569. [Abstract] [Full Text] [PDF] |
||||
![]() |
D. Bronheim Statins and the Perioperative Period Seminars in Cardiothoracic and Vascular Anesthesia, September 1, 2007; 11(3): 231 - 236. [Abstract] [PDF] |
||||
![]() |
T. Merz and S. H. Fuller Elevated serum transaminase levels resulting from concomitant use of rosuvastatin and amiodarone Am. J. Health Syst. Pharm., September 1, 2007; 64(17): 1818 - 1821. [Abstract] [Full Text] [PDF] |
||||
![]() |
G. A. Schmidt, J. D. Hoehns, J. L. Purcell, R. L. Friedman, and Y. Elhawi Severe Rhabdomyolysis and Acute Renal Failure Secondary to Concomitant Use of Simvastatin, Amiodarone, and Atazanavir J Am Board Fam Med, July 1, 2007; 20(4): 411 - 416. [Abstract] [Full Text] [PDF] |
||||
![]() |
J. R. Crouse III, J. S. Raichlen, W. A. Riley, G. W. Evans, M. K. Palmer, D. H. O'Leary, D. E. Grobbee, M. L. Bots, and for the METEOR Study Group Effect of Rosuvastatin on Progression of Carotid Intima-Media Thickness in Low-Risk Individuals With Subclinical Atherosclerosis: The METEOR Trial JAMA, March 28, 2007; 297(12): 1344 - 1353. [Abstract] [Full Text] [PDF] |
||||
![]() |
S. L. Bar, D. T. Holmes, and J. Frohlich Asymptomatic hypothyroidism and statin-induced myopathy Can Fam Physician, March 1, 2007; 53(3): 428 - 431. [Full Text] [PDF] |
||||
![]() |
P. Paramsothy and R. Knopp Management of dyslipidaemias. Heart, October 1, 2006; 92(10): 1529 - 1534. [Full Text] [PDF] |
||||
![]() |
W S. A Smellie Testing pitfalls and summary of guidance in lipid management BMJ, July 8, 2006; 333(7558): 83 - 86. [Full Text] [PDF] |
||||
![]() |
J. C Moon and R. G Bogle Switching statins. BMJ, June 10, 2006; 332(7554): 1344 - 1345. [Full Text] [PDF] |
||||
![]() |
R. Arora, M. Liebo, and F. Maldonado Statin-Induced Myopathy: The Two Faces of Janus Journal of Cardiovascular Pharmacology and Therapeutics, June 1, 2006; 11(2): 105 - 112. [Abstract] [PDF] |
||||
![]() |
K. L. Olson and L. A. Potts Role of the Pharmacist in the Management of Dyslipidemia Journal of Pharmacy Practice, April 1, 2006; 19(2): 94 - 102. [Abstract] [PDF] |
||||
![]() |
H. B. Levy and H. K Kohlhaas Considerations for Supplementing with Coenzyme Q10 During Statin Therapy Ann. Pharmacother., February 1, 2006; 40(2): 290 - 294. [Abstract] [Full Text] [PDF] |
||||
![]() |
J. Hendry Balancing Statin Therapy Guidelines With Practice DOC News, January 1, 2006; 3(1): 10 - 11. [Full Text] |
||||
![]() |
K. E. Hansen, J. P. Hildebrand, E. E. Ferguson, and J. H. Stein Outcomes in 45 Patients With Statin-Associated Myopathy Arch Intern Med, December 12, 2005; 165(22): 2671 - 2676. [Abstract] [Full Text] [PDF] |
||||
![]() |
M. J. Chapman and A. Carrie Mechanisms of Statin-Induced Myopathy: A Role for the Ubiquitin-Proteasome Pathway? Arterioscler. Thromb. Vasc. Biol., December 1, 2005; 25(12): 2441 - 2444. [Full Text] [PDF] |
||||
![]() |
J. Borja Ezetimibe coadministered with fenofibrate: some safety questions Eur. Heart J., November 1, 2005; 26(21): 2344 - 2344. [Full Text] [PDF] |
||||
![]() |
M. Farnier, M. J. Davies, Y. B. Mitchel, and B. Gumbiner Ezetimibe coadministered with fenofibrate: some safety questions: reply Eur. Heart J., November 1, 2005; 26(21): 2344 - 2345. [Full Text] [PDF] |
||||
![]() |
W S A Smellie, D Wilson, C A M McNulty, M J Galloway, G A Spickett, D I Finnigan, D A Bareford, M A Greig, and J Richards Best practice in primary care pathology: review 1 J. Clin. Pathol., October 1, 2005; 58(10): 1016 - 1024. [Abstract] [Full Text] [PDF] |
||||
![]() |
J. Chan, R. L Hui, and E. Levin Differential Association Between Statin Exposure and Elevated Levels of Creatine Kinase Ann. Pharmacother., October 1, 2005; 39(10): 1611 - 1615. [Abstract] [Full Text] [PDF] |
||||
![]() |
W. J. Sharp and T. F. Kresowik Are Patients Receiving Maximal Medical Therapy Following Carotid Endarterectomy? Perspectives in Vascular Surgery and Endovascular Therapy, September 1, 2005; 17(3): 272-1 - 273. [Abstract] [PDF] |
||||
![]() |
H.T. Ong The statin studies: from targeting hypercholesterolaemia to targeting the high-risk patient QJM, August 1, 2005; 98(8): 599 - 614. [Abstract] [Full Text] [PDF] |
||||
![]() |
G. Alayli, K. Cengiz, F. Canturk, D. Durmus, Y. Akyol, and E. B Menekse Acute Myopathy in a Patient with Concomitant Use of Pravastatin and Colchicine Ann. Pharmacother., July 1, 2005; 39(7): 1358 - 1361. [Abstract] [Full Text] [PDF] |
||||
![]() |
E. J. Whitney, R. A. Krasuski, B. E. Personius, J. E. Michalek, A. M. Maranian, M. W. Kolasa, E. Monick, B. G. Brown, and A. M. Gotto Jr. A Randomized Trial of a Strategy for Increasing High-Density Lipoprotein Cholesterol Levels: Effects on Progression of Coronary Heart Disease and Clinical Events Ann Intern Med, January 18, 2005; 142(2): 95 - 104. [Abstract] [Full Text] [PDF] |
||||
![]() < |