Cardiac allograft vasculopathy medical therapy: Difference between revisions

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==Overview==
==Overview==
Once CAV has developed, pharmacologic options to halt progression are limited. Moreover, outcomes resulting from available treatment have been disappointing. Retransplantation is the only definitive treatment of established CAV. Ideal regimen should not affect the lipid profile, blood pressures and renal function, and should have a positive impact on hemodynamics.
==Medical Therapy==
==Medical Therapy==
===Pharmacologic Management===
Treatment option for established CAV include:
 
{|class="wikitable" border="1"
===Nonpharmacologic Interventions===
|- align="center"
|'''Pharmacological Management'''
|'''Non-pharmacological Interventions'''
|- align="left"
|
* [[Sirolimus]]
* [[Everolimus]]
|
* Retransplantation
* Retransplantation
* [[Percutaneous coronary intervention]]s
* [[Percutaneous coronary intervention]]s
* [[Coronary artery bypass grafting]]
* [[Coronary artery bypass grafting]] ([[CABG]])
* [[Transmyocardial revascularization]]
* [[Transmyocardial revascularization]]
* Heparin induced/mediated extracorporeal LDL plasmapheresis (HELP)
* [[LDL apheresis|Heparin induced/mediated extracorporeal LDL plasmapheresis]] (HELP)
 
|}
====Retransplantation====
* Retransplantation is the only definitive treatment for CAV. It is associated with satisfactory survival in patients with CAV.
* About 60% of the repeat transplantation procedures performed are due to graft failure secondary to CAV <ref name="pmid16686747">{{cite journal| author=Mehra MR| title=Contemporary concepts in prevention and treatment of cardiac allograft vasculopathy. | journal=Am J Transplant | year= 2006 | volume= 6 | issue= 6 | pages= 1248-56 | pmid=16686747 | doi=10.1111/j.1600-6143.2006.01314.x | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=16686747  }} </ref>. It is a higher risk procedure and raises significant ethical concerns primarily because of scarcity of heart transplant donors <ref name="pmid12909465">{{cite journal| author=Radovancevic B, McGiffin DC, Kobashigawa JA, Cintron GB, Mullen GM, Pitts DE et al.| title=Retransplantation in 7,290 primary transplant patients: a 10-year multi-institutional study. | journal=J Heart Lung Transplant | year= 2003 | volume= 22 | issue= 8 | pages= 862-8 | pmid=12909465 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12909465  }} </ref>.
* Prognosis: One year survival has improved in recent years, but continues to be inferior compared to primary transplants (79% in re-transplant group compared to 85% in primary transplant group) <ref name="pmid10972218">{{cite journal| author=Srivastava R, Keck BM, Bennett LE, Hosenpud JD| title=The results of cardiac retransplantation: an analysis of the Joint International Society for Heart and Lung Transplantation/United Network for Organ Sharing Thoracic Registry. | journal=Transplantation | year= 2000 | volume= 70 | issue= 4 | pages= 606-12 | pmid=10972218 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=10972218  }} </ref>.
 
====Percutaneous Coronary Intervention====
* This procedure is limited only to a selected group of patients with focal disease in a single artery. Moreover, the number of patients who benefit are small.
* Incidence of re-stenosis is high, ranging from 20 to 60% as reported in various studies.
* [[Intracoronary stenting]] appears to have lower rate of re-stenosis as compared to [[coronary angioplasty]] alone.
* Concomitant use of high dose immunosuppressive therapy with [[azathioprine]] and [[mycophenolate]] have shown to significantly reduce the rate of re-stenosis <ref name="pmid15172400">{{cite journal| author=Benza RL, Zoghbi GJ, Tallaj J, Brown R, Kirklin JK, Hubbard M et al.| title=Palliation of allograft vasculopathy with transluminal angioplasty: a decade of experience. | journal=J Am Coll Cardiol | year= 2004 | volume= 43 | issue= 11 | pages= 1973-81 | pmid=15172400 | doi=10.1016/j.jacc.2004.02.045 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=15172400  }} </ref>.


===Pharmacologic Management===
====High Dose Immunosuppressive Therapy====
* Lamich and colleagues <ref name="pmid9708469">{{cite journal| author=Lamich R, Ballester M, Martí V, Brossa V, Aymat R, Carrió I et al.| title=Efficacy of augmented immunosuppressive therapy for early vasculopathy in heart transplantation. | journal=J Am Coll Cardiol | year= 1998 | volume= 32 | issue= 2 | pages= 413-9 | pmid=9708469 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=9708469  }} </ref> studied the effects of augmented immunosuppressive therapy on progression of established CAV in a prospective trial of 76 cardiac allograft recipients. They concluded that the likelihood of CAV regression is higher when treatment was instituted within one year of transplant (92%) compared to after one year (40%) (P=0.033).
* However, this is not routinely practiced as the risks of high dose immunosuppressive therapy outweighs the benefits.
==References==
==References==
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Latest revision as of 18:49, 20 December 2014

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Aarti Narayan, M.B.B.S [2]; Raviteja Guddeti, M.B.B.S. [3]

Overview

Once CAV has developed, pharmacologic options to halt progression are limited. Moreover, outcomes resulting from available treatment have been disappointing. Retransplantation is the only definitive treatment of established CAV. Ideal regimen should not affect the lipid profile, blood pressures and renal function, and should have a positive impact on hemodynamics.

Medical Therapy

Treatment option for established CAV include:

Pharmacological Management Non-pharmacological Interventions

Pharmacologic Management

High Dose Immunosuppressive Therapy

  • Lamich and colleagues [1] studied the effects of augmented immunosuppressive therapy on progression of established CAV in a prospective trial of 76 cardiac allograft recipients. They concluded that the likelihood of CAV regression is higher when treatment was instituted within one year of transplant (92%) compared to after one year (40%) (P=0.033).
  • However, this is not routinely practiced as the risks of high dose immunosuppressive therapy outweighs the benefits.

References

  1. Lamich R, Ballester M, Martí V, Brossa V, Aymat R, Carrió I; et al. (1998). "Efficacy of augmented immunosuppressive therapy for early vasculopathy in heart transplantation". J Am Coll Cardiol. 32 (2): 413–9. PMID 9708469.

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