Vascular disease: Difference between revisions

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{| class="wikitable"
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|+ Interventions to prevent all-cause mortality<br/>among patients at risk of vascular disease
|+ Interventions to prevent all-cause mortality<br/>among patients at risk of vascular disease
! &nbsp;!! Study type!![[Relative risk ratio]] or [[odds ratio]] for all death
! &nbsp;!! Study type!![[Relative risk ratio]] or [[odds ratio]]<br/>for all-cause mortality
|-
|-
| [[Aspirin]]<ref name="pmid16418466"/>|| [[Systematic review]] of 6 [[randomized controlled trial|RCTs]] through 2005<br/>(Does not include negative JPAD trial<ref name="pmid18997198">{{cite journal |author=Ogawa H, Nakayama M, Morimoto T, ''et al'' |title=Low-dose aspirin for primary prevention of atherosclerotic events in patients with type 2 diabetes: a randomized controlled trial |journal=JAMA |volume=300 |issue=18 |pages=2134–41 |year=2008 |month=November |pmid=18997198 |doi=10.1001/jama.2008.623 |url=http://jama.ama-assn.org/cgi/pmidlookup?view=long&pmid=18997198 |issn=}}</ref>)|| Men [[Odds ratio|OR]]=0.93<br/>Women  [[Odds ratio|OR]]=0.94
| [[Aspirin]]<ref name="pmid16418466"/>|| [[Systematic review]] of 6 [[randomized controlled trial|RCTs]] through 2005<br/>(Does not include negative JPAD trial<ref name="pmid18997198">{{cite journal |author=Ogawa H, Nakayama M, Morimoto T, ''et al'' |title=Low-dose aspirin for primary prevention of atherosclerotic events in patients with type 2 diabetes: a randomized controlled trial |journal=JAMA |volume=300 |issue=18 |pages=2134–41 |year=2008 |month=November |pmid=18997198 |doi=10.1001/jama.2008.623 |url=http://jama.ama-assn.org/cgi/pmidlookup?view=long&pmid=18997198 |issn=}}</ref>)|| Men [[Odds ratio|OR]]=0.93<br/>Women  [[Odds ratio|OR]]=0.94

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Template:TOC-right In medicine, vascular disease is "pathological processes involving any of the blood vessels in the cardiac or peripheral circulation. They include diseases of arteries; veins; and rest of the vasculature system in the body."[1] Examples of vascular diseases include coronary heart disease, cerebrovascular disorders, and peripheral vascular disease.

Prevention

Exercise

Separate to the question of the benefits of exercise; it is unclear whether doctors should spend time counseling patients to exercise. The U.S. Preventive Services Task Force (USPSTF), based on a systematic review of randomized controlled trials, found 'insufficient evidence' to recommend that doctors counsel patients on exercise.[2] However, the American Heart Association, based on a non-systematic review, recommends that doctors counsel patients on exercise [3]

Preventive diets

Dietary changes can potentially lead to large changes in the cholesterol.[4]

Aspirin

Aspirin, in doses of less than 75 to 81 mg/d[5], can reduce the incidence of cardiovascular events.[6] The U.S. Preventive Services Task Force 'strongly recommends that clinicians discuss aspirin chemoprevention with adults who are at increased risk for coronary heart disease'.[7] The Task Force defines increased risk as 'Men older than 40 years of age, postmenopausal women, and younger persons with risk factors for coronary heart disease (for example, hypertension, diabetes, or smoking) are at increased risk for heart disease and may wish to consider aspirin therapy'. More specifically, high-risk persons are 'those with a 5-year risk ≥ 3%'. A risk calculator is available.[8]

Regarding healthy women, the more recent Women's Health Study randomized controlled trial found insignficant benefit from aspirin in the reduction of cardiac events; however there was a signficant reduction in stroke.[9] Subgroup analysis showed that all benefit was confined to women over 65 years old.[9] In spite of the insignficant benefit for women < 65 years old, recent practice guidelines by the American Heart Association recommend to 'consider' aspirin in 'healthy women' <65 years of age 'when benefit for ischemic stroke prevention is likely to outweigh adverse effects of therapy'.[10]

Antilipemic drugs

The U.S. Preventive Services Task Force (USPSTF) estimated that after 5 to 7 years of treatment with statins, the relative risk reduction of coronary heart disease events is decreased by approximately 30%[11][12]. More recently, a meta-analysis reported an almost identical relative risk reduction of 29.2% in low risk patients treated for 4.3 years [13]. A relative risk reduction of 19% in coronary mortality was found in a meta-analysis of patients at all levels of risk.[14]

Various clinical practice guidelines have addressed the treatment of hypercholesterolemia. The American College of Physicians has addressed hypercholesterolemia in patients with diabetes [15]. Their recommendations are:

  • Recommendation 1: Lipid-lowering therapy should be used for secondary prevention of cardiovascular mortality and morbidity for all patients (both men and women) with known coronary artery disease and type 2 diabetes.
  • Recommendation 2: Statins should be used for primary prevention against macrovascular complications in patients (both men and women) with type 2 diabetes and other cardiovascular risk factors.
  • Recommendation 3: Once lipid-lowering therapy is initiated, patients with type 2 diabetes mellitus should be taking at least moderate doses of a statin (the accompanying evidence report states "simvastatin, 40 mg/d; pravastatin, 40 mg/d; lovastatin, 40 mg/d; atorvastatin, 20 mg/d; or an equivalent dose of another statin")[16].
  • Recommendation 4: For those patients with type 2 diabetes who are taking statins, routine monitoring of liver function tests or muscle enzymes is not recommended except in specific circumstances.

The National Cholesterol Education Program revised their guidelines[17]; however, their 2004 revisions have been criticized for use of nonrandomized, observational data.[18]

Antioxidant vitamins

For more information, see: Antioxidant.

Antioxidant vitamins are not beneficial.

Omega-3 fatty acids (fish oil)

For more information, see: Fish oil.


Omega-3 fatty acids may have small benefit[19][20], but results of randomized controlled trials are not consistent. The benefit may be at conferred on 2% of patients who take omega-3 fatty acids.[19]

Homocysteine lowering

Lowering of homocystein blood concentration with folic acid, vitamin B12, and vitamin B6 is not beneficial.

A meta-analysis concluded that lowering homocysteine with folic acid and other supplements may reduce stroke.[21] However, the two largest randomized controlled trials included in the meta-analysis had conflicting results. Lonn reported positive results[22]; whereas the trial by Toole was negative.[23]

Since the meta-analysis, two additional trials have shown no reduction in cardiovascular endpoint despite successfully lowering the plasma homocysteine level.[24][25]

Evidence table

Interventions to prevent all-cause mortality
among patients at risk of vascular disease
  Study type Relative risk ratio or odds ratio
for all-cause mortality
Aspirin[6] Systematic review of 6 RCTs through 2005
(Does not include negative JPAD trial[26])		 Men OR=0.93
Women OR=0.94
Statin[13] Systematic review of 7 RCTs through 2005
Does not include positive Jupiter[27] or negative GISSI-HF[28] trials		 RR=0.92
Fish oil[29] Systematic review of 12 RCTs through 2006
(Does not include positive GISSI-HF[20])		 OR=0.92
No systematic review reported a significant decrease in mortality.

References

  1. ↑ Anonymous (2024), Vascular disease (English). Medical Subject Headings. U.S. National Library of Medicine.
  2. ↑ (2002) "Behavioral counseling in primary care to promote physical activity: recommendation and rationale". Ann. Intern. Med. 137 (3): 205-7. PMID 12160370. [e]
  3. ↑ Thompson PD, Buchner D, Pina IL, et al (2003). "Exercise and physical activity in the prevention and treatment of atherosclerotic cardiovascular disease: a statement from the Council on Clinical Cardiology (Subcommittee on Exercise, Rehabilitation, and Prevention) and the Council on Nutrition, Physical Activity, and Metabolism (Subcommittee on Physical Activity)". Circulation 107 (24): 3109-16. DOI:10.1161/01.CIR.0000075572.40158.77. PMID 12821592. Research Blogging. http://www.ngc.gov/summary/summary.aspx?ss=15&doc_id=5360&string=#s23
  4. ↑ McMurry MP, Cerqueira MT, Connor SL, Connor WE (1991). "Changes in lipid and lipoprotein levels and body weight in Tarahumara Indians after consumption of an affluent diet". N. Engl. J. Med. 325 (24): 1704-8. PMID 1944471. [e]
  5. ↑ Campbell CL, Smyth S, Montalescot G, Steinhubl SR (2007). "Aspirin dose for the prevention of cardiovascular disease: a systematic review". JAMA 297 (18): 2018-24. DOI:10.1001/jama.297.18.2018. PMID 17488967. Research Blogging.
  6. ↑ 6.0 6.1 Berger J, Roncaglioni M, Avanzini F, Pangrazzi I, Tognoni G, Brown D (2006). "Aspirin for the primary prevention of cardiovascular events in women and men: a sex-specific meta-analysis of randomized controlled trials". JAMA 295 (3): 306-13. DOI:10.1001/jama.295.3.306. PMID 16418466. Research Blogging.
  7. ↑ (2002) "Aspirin for the primary prevention of cardiovascular events: recommendation and rationale". Ann Intern Med 136 (2): 157-60. PMID 11790071.
  8. ↑ http://www.med-decisions.com/
  9. ↑ 9.0 9.1 Ridker P, Cook N, Lee I, Gordon D, Gaziano J, Manson J, Hennekens C, Buring J (2005). "A randomized trial of low-dose aspirin in the primary prevention of cardiovascular disease in women". N Engl J Med 352 (13): 1293-304. DOI:10.1056/NEJMoa050613. PMID 15753114. Research Blogging.
  10. ↑ http://circ.ahajournals.org/cgi/content/abstract/CIRCULATIONAHA.107.181546v1
  11. ↑ Pignone MP, Phillips CJ, Atkins D, Teutsch SM, Mulrow CD, Lohr KN (2001). "Screening and treating adults for lipid disorders". American Journal of Preventive Medicine 20 (3 Suppl): 77–89. PMID 11306236. [e]
  12. ↑ Screening for Lipid Disorders: Recommendations and Rationale. Retrieved on 2007-10-17.
  13. ↑ 13.0 13.1 Thavendiranathan P, Bagai A, Brookhart M, Choudhry N (2006). "Primary prevention of cardiovascular diseases with statin therapy: a meta-analysis of randomized controlled trials". Arch Intern Med 166 (21): 2307-13. DOI:10.1001/archinte.166.21.2307. PMID 17130382. Research Blogging.
  14. ↑ Baigent C, Keech A, Kearney PM, et al (2005). "Efficacy and safety of cholesterol-lowering treatment: prospective meta-analysis of data from 90,056 participants in 14 randomised trials of statins". Lancet 366 (9493): 1267-78. DOI:10.1016/S0140-6736(05)67394-1. PMID 16214597. Research Blogging.
  15. ↑ Snow V, Aronson M, Hornbake E, Mottur-Pilson C, Weiss K (2004). "Lipid control in the management of type 2 diabetes mellitus: a clinical practice guideline from the American College of Physicians". Ann Intern Med 140 (8): 644-9. PMID 15096336.
  16. ↑ Vijan S, Hayward RA (2004). "Pharmacologic lipid-lowering therapy in type 2 diabetes mellitus: background paper for the American College of Physicians". Ann. Intern. Med. 140 (8): 650-8. PMID 15096337. [e]
  17. ↑ Grundy SM, Cleeman JI, Merz CN, Brewer HB, Clark LT, Hunninghake DB, Pasternak RC, Smith SC, Stone NJ (2004). "Implications of recent clinical trials for the National Cholesterol Education Program Adult Treatment Panel III Guidelines". J. Am. Coll. Cardiol. 44 (3): 720-32. DOI:10.1016/j.jacc.2004.07.001. PMID 15358046. Research Blogging.
  18. ↑ Hayward RA, Hofer TP, Vijan S (2006). "Narrative review: lack of evidence for recommended low-density lipoprotein treatment targets: a solvable problem". Ann. Intern. Med. 145 (7): 520-30. PMID 17015870. [e]
  19. ↑ 19.0 19.1 Yokoyama M, Origasa H, Matsuzaki M, et al (2007). "Effects of eicosapentaenoic acid on major coronary events in hypercholesterolaemic patients (JELIS): a randomised open-label, blinded endpoint analysis". Lancet 369 (9567): 1090–8. DOI:10.1016/S0140-6736(07)60527-3. PMID 17398308. Research Blogging.
  20. ↑ 20.0 20.1 Gissi-Hf Investigators (August 2008). "Effect of n-3 polyunsaturated fatty acids in patients with chronic heart failure (the GISSI-HF trial): a randomised, double-blind, placebo-controlled trial". Lancet. DOI:10.1016/S0140-6736(08)61239-8. PMID 18757090. Research Blogging. Cite error: Invalid <ref> tag; name "pmid18757090" defined multiple times with different content
  21. ↑ Wang X, Qin X, Demirtas H, et al (2007). "Efficacy of folic acid supplementation in stroke prevention: a meta-analysis". Lancet 369 (9576): 1876-82. DOI:10.1016/S0140-6736(07)60854-X. PMID 17544768. Research Blogging. PMID 17544768
  22. ↑ Lonn E, Yusuf S, Arnold MJ, et al (2006). "Homocysteine lowering with folic acid and B vitamins in vascular disease". N. Engl. J. Med. 354 (15): 1567-77. DOI:10.1056/NEJMoa060900. PMID 16531613. Research Blogging. PMID 16531613
  23. ↑ Toole JF, Malinow MR, Chambless LE, et al (2004). "Lowering homocysteine in patients with ischemic stroke to prevent recurrent stroke, myocardial infarction, and death: the Vitamin Intervention for Stroke Prevention (VISP) randomized controlled trial". JAMA 291 (5): 565-75. DOI:10.1001/jama.291.5.565. PMID 14762035. Research Blogging. PMID 14762035
  24. ↑ "". [e]
  25. ↑ Ebbing M, Bleie O, Ueland PM, Nordrehaug JE, Nilsen DW, Vollset SE, et al. Mortality and Cardiovascular Events in Patients Treated With Homocysteine-Lowering B Vitamins After Coronary Angiography: A Randomized Controlled Trial. JAMA. 2008 Aug 20;300(7):795-804.
  26. ↑ Ogawa H, Nakayama M, Morimoto T, et al (November 2008). "Low-dose aspirin for primary prevention of atherosclerotic events in patients with type 2 diabetes: a randomized controlled trial". JAMA 300 (18): 2134–41. DOI:10.1001/jama.2008.623. PMID 18997198. Research Blogging.
  27. ↑ Ridker PM, Paynter NP, Rifai N, Gaziano JM, Cook NR (November 2008). "C-reactive protein and parental history improve global cardiovascular risk prediction: the Reynolds Risk Score for men". Circulation 118 (22): 2243–51, 4p following 2251. DOI:10.1161/CIRCULATIONAHA.108.814251. PMID 18997194. Research Blogging.
  28. ↑ Gissi-HF Investigators, Tavazzi L, Maggioni AP, et al (October 2008). "Effect of rosuvastatin in patients with chronic heart failure (the GISSI-HF trial): a randomised, double-blind, placebo-controlled trial". Lancet 372 (9645): 1231–9. DOI:10.1016/S0140-6736(08)61240-4. PMID 18757089. Research Blogging.
  29. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named pmid19106137
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