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Oral Omega n3-PUFA Therapy (Omacor) Has No Impact on Indices of Heart Rate Variability in Stable Post Myocardial Infarction Patients

  • Clinical Pharmacology
  • Published:
Cardiovascular Drugs and Therapy Aims and scope Submit manuscript

Abstract

Objective

To determine the effects of n3-PUFA supplementation, in the dose used in the GISSI-Prevenzione study, on indices of heart rate variability (HRV) in patients following myocardial infarction (AMI).

Materials and methods

Open label randomised single blind controlled trial. Thirty eight patients post AMI, stable on standard secondary prevention drug therapy were single blind randomised to receive either Omacor 1 g/day (n = 21) or usual care (n = 17). HRV indices (time and frequency-domain) were measured at baseline and following 3 months of treatment.

Results

At baseline there were no significant differences in clinical, biochemical or HRV indices between patient groups. After 3 months therapy there were no observed changes in measured HRV indices in either the Omacor supplemented or ‘usual care’ groups.

Conclusions

Three month supplementation of omega 3 PUFA (Omacor) 1 g/day has no effect on HRV is patients post AMI.

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References

  1. Burr ML, Fehily AM, Gilbert JF, Rogers S, Holliday RM, Sweetnam PM, et al. Effects of changes in fat, fish and fibre intakes on death and myocardial infarction: diet and reinfarction trial (DART). Lancet 1989;ii:757–61.

    Article  Google Scholar 

  2. Simopoulos AP. Omega-3 fatty acids in the prevention-management of cardiovascular disease. Can J Physiol Pharm 1997;75:234–9.

    Article  CAS  Google Scholar 

  3. GISSI-Prevenzione Investigators. Dietary supplementation with n-3 polyunsaturated fatty acids and vitamin E after myocardial infarction: results of the GISSI-Prevenzione trial. Lancet 1999;354:447–55.

    Article  Google Scholar 

  4. Thies F, Garry JM, Yaqoob P, Rerkasem K, Williams J, Shearman CP, et al. Association of n-3 polyunsaturated fatty acids with stability of atherosclerotic plaques: a randomised controlled trial. Lancet 2003;361:477–85.

    Article  CAS  PubMed  Google Scholar 

  5. Brown AA, Hu FB. Dietary modulation of endothelial function: implications for cardiovascular disease. Am J Clin Nutr 2001;73:673–86.

    CAS  PubMed  Google Scholar 

  6. Lee KW, Blann AD, Lip GY. Effects of omega-3 polyunsaturated fatty acids on plasma indices of thrombogenesis and inflammation in patients post myocardial infarction. Thromb Res 2006;118(3):305–12.

    Article  CAS  PubMed  Google Scholar 

  7. Patel JV, Lee KW, Tomson J, Dubb K, Hughes EA, Lip GY. Effects of omega-3 polyunsaturated fatty acids on metabolically active hormones in patients post myocardial infarction. Int J Cardiol 2006 (June 14). http://dx.doi.org./10.1016/j.ijcard.2006.04.004.

  8. Christensen JH, Gustenhoff P, Korup E, Aaroe J, Toft E, Moller J, et al. Effect of fish oil on heart rate variability in survivors of myocardial infarction: a double blind randomised controlled trial. BMJ 1996;312:677–8.

    CAS  PubMed  Google Scholar 

  9. Christensen JH, Korup E, Aaroe J, Toft E, Moller J, Rasmussen K, et al. Fish consumption, n-3 fatty acids in cell membranes, and heart rate variability in survivors of myocardial infarction with left ventricular dysfunction. Am J Cardiol 1997;79:1670–3.

    Article  CAS  PubMed  Google Scholar 

  10. Christensen JH, Dyerberg J, Schmidt EB. N-3 fatty acids and the risk of sudden cardiac death assessed by 24-hour heart rate variability (abstract). Lipids. 1999;34 Suppl S197.

  11. Christensen JH, Skou HA, Fog L, Hansen VE, Vesterlund T, Dyerberg J, et al. Marine n-3 fatty acids, wine intake and heart rate variability in patients referred for coronary angiography. Circulation 2001;103:651–7.

    CAS  PubMed  Google Scholar 

  12. Hamaad A, Lip GY, MacFadyen RJ. Unheralded sudden cardiac death: do autonomic tone and thrombosis interact as key factors in aetiology? Ann Med 2003;35:592–04.

    Article  PubMed  Google Scholar 

  13. Hull SS Jr, Evans AR, Vanoli E, Adamson PB, Stramba-Badiale M, Albert DE, et al. Heart rate variability before and after myocardial infarction in conscious dogs at high and low risk of sudden death. J Am Coll Cardiol 1990;66:978–85.

    Article  Google Scholar 

  14. Molgaard H, Sorensen KE, Bjerregaard P. Attentuated 24-h heart rate variability in apparently healthy subjects, subsequently suffering sudden cardiac death. Clin Auton Res 1991;1:233–7.

    Article  CAS  PubMed  Google Scholar 

  15. Scwartz PJ, La Rovere MT, Vanoli E. Autonomic nervous system and sudden cardiac death. Experimental basis and clinical observations for post-myocardial infarction risk stratification. Circulation. 1992;85:I77–91.

    Google Scholar 

  16. Kleiger RE, Miller JP, Bigger JT, Moss AJ. Decreased heart rate variability and it’s association with increased mortality after acute myocardial infarction. Am J Cardiol 1987;59:256–62.

    Article  CAS  PubMed  Google Scholar 

  17. Billman GE, Kang JX, Leaf A. Prevention of sudden death by dietary pure omega-3 polyunsaturated fatty acids in dogs. Circulation 1999;99:2452–7.

    CAS  PubMed  Google Scholar 

  18. Xiao YF, Kang JX, Morgan JP, Leaf A. Blocking effects of polyunsaturated fatty acids on Na+ channels of neonatal rat ventricular myocytes. Proc Natl Acad Sci USA 1995;92:11000–4.

    Article  CAS  PubMed  Google Scholar 

  19. Xiao YF, Gomez AM, Morgan JP, Lederer WJ, Leaf A. Suppression of voltage-gated L-type Ca2+ currents by polyunsaturated fatty acids in adult and neonatal rat cardiac myocytes. Proc Natl Acad Sci U S A 1997;94:4182–7.

    Article  CAS  PubMed  Google Scholar 

  20. Xiao Y-F, Wright SN, Wang GK, Morgan JP, Leaf A. Fatty acids suppress voltage-gated Na+ currents in HEK293t cells transfected with the α-subunit of the human cardiac Na+ channel. Proc Natl Acad Sci U S A 1998;95:2680–5.

    Article  CAS  PubMed  Google Scholar 

  21. Leaf A, Kang JX, Xiao Y-F, Billman GE. Dietary ω-3 fatty acids in the prevention of cardiac arrhythmias. Curr Opin Clin Nutr 1998;1:225–8.

    Article  CAS  Google Scholar 

  22. Christensen JH, Aaroe J, Knudsen N, Dideriksen K, Kornerup HJ, Dyerberg J, et al. Heart rate variability and n-3 fatty acids in patients with chronic renal failure—a pilot study. Clin Nephrol 1998;49:102–6.

    CAS  PubMed  Google Scholar 

  23. Christensen JH, Christensen MS, Dyerberg J, Scmidt EB. Heart rate variability and fatty acid content of blood cell membranes: a dose response study with n-3 fatty acids. Am J Clin Nutr 1999;70:331–7.

    CAS  PubMed  Google Scholar 

  24. Villa B, Calabresi L, Chiesa G, Rise P, Galli C, Sirtori CR. Omega-3 fatty acid ethyl esters increase heart rate variability in patients with coronary disease. Pharmacol Res 2002;45:475.

    Article  CAS  PubMed  Google Scholar 

  25. Geelan A, Zock PL, Swenne CA, Brouwer IA, Schouten EG, Katan MB. Effect of n-3 fatty acids on heart rate variability and baroreflex sensitivity in middle age subjects. Am Heart J 2003;146:E4.

    Google Scholar 

  26. Marchioli R, Barzi F, Bomba E, Chieffo C, Di Gregorio D, Di Mascio R, et al. Early protection against sudden death by n-3 polyunsaturated fatty acids after myocardial infarction: time-course analysis of the results of the Gruppo Italiano per lo Studio della Sopravvivenza nell’Infarto Miocardico (GISSI)-Prevenzione. Circulation 2002 Apr 23;105(16):1897–903.

    Article  CAS  PubMed  Google Scholar 

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Correspondence to Robert J. MacFadyen.

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Hamaad, A., Kaeng Lee, W., Lip, G.Y.H. et al. Oral Omega n3-PUFA Therapy (Omacor) Has No Impact on Indices of Heart Rate Variability in Stable Post Myocardial Infarction Patients. Cardiovasc Drugs Ther 20, 359–364 (2006). https://doi.org/10.1007/s10557-006-0295-z

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  • DOI: https://doi.org/10.1007/s10557-006-0295-z

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