Determinants of outcome after endovascular therapy for critical limb ischemia with tissue loss

Andrew J. Meltzer, Gisberto Evangelisti, Ashley R. Graham, Peter H. Connolly, Douglas W. Jones, Harry L. Bush, John K Karwowski, Darren B. Schneider

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Background In this study we examine outcomes of endovascular therapy for critical limb ischemia with tissue loss and identify risk factors for failure of endovascular therapy across a panel of outcome metrics. Methods A retrospective review (2006-2010) of patients undergoing endovascular therapy for critical limb ischemia with tissue loss provided data for multivariate models of overall survival, amputation-free survival, limb salvage (LS), and wound healing. Results One hundred six patients underwent endovascular therapy for Rutherford class 5 (88%) or class 6 (12%) ischemia with ulceration and/or gangrene of the heel (15%), forefoot (16%), toe(s) (43%), calf/ankle (11%), or multiple locations (15%). Sustained limb salvage at 1 year was 87%. One-year overall survival and amputation-free survival were 65% and 49%, respectively. Multivariate regression models identified independent risk factors for reduced primary patency: Rutherford 6 ischemia (P = 0.008; HR 4.7 [95% confidence interval 1.5-14.8]) and infrapopliteal intervention (P = 0.03; HR 2.58 [95% CI 1.08-6.14]). Rutherford class 6 ischemia was independently associated with reduced assisted patency (P = 0.004; HR 5.39 [95% CI 1.74-16.73]). Wound healing was adversely affected by diabetes (P = 0.02; HR 7.0 [95% CI 1.4-36.2]), continued smoking (P = 0.04; HR 5.3 [95% CI 1.1-26.3]), and patency loss (P = 0.04; HR 4.8 [95% CI 1.1-22.30]). Rutherford class 6 ischemia was independently associated with reduced limb salvage (P < 0.0001; HR 35.1 [95% CI 5.4-231.2]) and amputation-free survival (P = 0.007; HR 3.61 [95% CI 1.4-9.18]), in addition to COPD (P = 0.01; 3.58 [95% 1.28-9.55]). Independent predictors of poor overall survival included end-stage renal disease (P = 0.03; HR 2.99 [95% CI 1.1-8.05]), history of angina (P = 0.02; HR 5.08 [95% CI 1.28-20.29]), and COPD (P = 0.001; HR 3.77 [95% CI 1.76-8.34]). Conclusions Both increasing severity of tissue loss as well as the presence of severe medical comorbidities are associated with poorer outcomes of endovascular therapy in these patients. Although sustained limb salvage in patients with tissue loss may be achieved with endovascular therapy, this is due to poor overall survival and a competing mortality hazard.

Original languageEnglish (US)
Pages (from-to)144-151
Number of pages8
JournalAnnals of Vascular Surgery
Volume28
Issue number1
DOIs
StatePublished - Jan 2014
Externally publishedYes

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Ischemia
Extremities
Limb Salvage
Survival
Amputation
Wound Healing
Chronic Obstructive Pulmonary Disease
Therapeutics
Gangrene
Heel
Toes
Ankle
Chronic Kidney Failure
Comorbidity
Smoking
Outcome Assessment (Health Care)
Confidence Intervals
Mortality

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Surgery

Cite this

Meltzer, A. J., Evangelisti, G., Graham, A. R., Connolly, P. H., Jones, D. W., Bush, H. L., ... Schneider, D. B. (2014). Determinants of outcome after endovascular therapy for critical limb ischemia with tissue loss. Annals of Vascular Surgery, 28(1), 144-151. https://doi.org/10.1016/j.avsg.2013.01.018

Determinants of outcome after endovascular therapy for critical limb ischemia with tissue loss. / Meltzer, Andrew J.; Evangelisti, Gisberto; Graham, Ashley R.; Connolly, Peter H.; Jones, Douglas W.; Bush, Harry L.; Karwowski, John K; Schneider, Darren B.

In: Annals of Vascular Surgery, Vol. 28, No. 1, 01.2014, p. 144-151.

Research output: Contribution to journalArticle

Meltzer, AJ, Evangelisti, G, Graham, AR, Connolly, PH, Jones, DW, Bush, HL, Karwowski, JK & Schneider, DB 2014, 'Determinants of outcome after endovascular therapy for critical limb ischemia with tissue loss', Annals of Vascular Surgery, vol. 28, no. 1, pp. 144-151. https://doi.org/10.1016/j.avsg.2013.01.018
Meltzer, Andrew J. ; Evangelisti, Gisberto ; Graham, Ashley R. ; Connolly, Peter H. ; Jones, Douglas W. ; Bush, Harry L. ; Karwowski, John K ; Schneider, Darren B. / Determinants of outcome after endovascular therapy for critical limb ischemia with tissue loss. In: Annals of Vascular Surgery. 2014 ; Vol. 28, No. 1. pp. 144-151.
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abstract = "Background In this study we examine outcomes of endovascular therapy for critical limb ischemia with tissue loss and identify risk factors for failure of endovascular therapy across a panel of outcome metrics. Methods A retrospective review (2006-2010) of patients undergoing endovascular therapy for critical limb ischemia with tissue loss provided data for multivariate models of overall survival, amputation-free survival, limb salvage (LS), and wound healing. Results One hundred six patients underwent endovascular therapy for Rutherford class 5 (88{\%}) or class 6 (12{\%}) ischemia with ulceration and/or gangrene of the heel (15{\%}), forefoot (16{\%}), toe(s) (43{\%}), calf/ankle (11{\%}), or multiple locations (15{\%}). Sustained limb salvage at 1 year was 87{\%}. One-year overall survival and amputation-free survival were 65{\%} and 49{\%}, respectively. Multivariate regression models identified independent risk factors for reduced primary patency: Rutherford 6 ischemia (P = 0.008; HR 4.7 [95{\%} confidence interval 1.5-14.8]) and infrapopliteal intervention (P = 0.03; HR 2.58 [95{\%} CI 1.08-6.14]). Rutherford class 6 ischemia was independently associated with reduced assisted patency (P = 0.004; HR 5.39 [95{\%} CI 1.74-16.73]). Wound healing was adversely affected by diabetes (P = 0.02; HR 7.0 [95{\%} CI 1.4-36.2]), continued smoking (P = 0.04; HR 5.3 [95{\%} CI 1.1-26.3]), and patency loss (P = 0.04; HR 4.8 [95{\%} CI 1.1-22.30]). Rutherford class 6 ischemia was independently associated with reduced limb salvage (P < 0.0001; HR 35.1 [95{\%} CI 5.4-231.2]) and amputation-free survival (P = 0.007; HR 3.61 [95{\%} CI 1.4-9.18]), in addition to COPD (P = 0.01; 3.58 [95{\%} 1.28-9.55]). Independent predictors of poor overall survival included end-stage renal disease (P = 0.03; HR 2.99 [95{\%} CI 1.1-8.05]), history of angina (P = 0.02; HR 5.08 [95{\%} CI 1.28-20.29]), and COPD (P = 0.001; HR 3.77 [95{\%} CI 1.76-8.34]). Conclusions Both increasing severity of tissue loss as well as the presence of severe medical comorbidities are associated with poorer outcomes of endovascular therapy in these patients. Although sustained limb salvage in patients with tissue loss may be achieved with endovascular therapy, this is due to poor overall survival and a competing mortality hazard.",
author = "Meltzer, {Andrew J.} and Gisberto Evangelisti and Graham, {Ashley R.} and Connolly, {Peter H.} and Jones, {Douglas W.} and Bush, {Harry L.} and Karwowski, {John K} and Schneider, {Darren B.}",
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T1 - Determinants of outcome after endovascular therapy for critical limb ischemia with tissue loss

AU - Meltzer, Andrew J.

AU - Evangelisti, Gisberto

AU - Graham, Ashley R.

AU - Connolly, Peter H.

AU - Jones, Douglas W.

AU - Bush, Harry L.

AU - Karwowski, John K

AU - Schneider, Darren B.

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N2 - Background In this study we examine outcomes of endovascular therapy for critical limb ischemia with tissue loss and identify risk factors for failure of endovascular therapy across a panel of outcome metrics. Methods A retrospective review (2006-2010) of patients undergoing endovascular therapy for critical limb ischemia with tissue loss provided data for multivariate models of overall survival, amputation-free survival, limb salvage (LS), and wound healing. Results One hundred six patients underwent endovascular therapy for Rutherford class 5 (88%) or class 6 (12%) ischemia with ulceration and/or gangrene of the heel (15%), forefoot (16%), toe(s) (43%), calf/ankle (11%), or multiple locations (15%). Sustained limb salvage at 1 year was 87%. One-year overall survival and amputation-free survival were 65% and 49%, respectively. Multivariate regression models identified independent risk factors for reduced primary patency: Rutherford 6 ischemia (P = 0.008; HR 4.7 [95% confidence interval 1.5-14.8]) and infrapopliteal intervention (P = 0.03; HR 2.58 [95% CI 1.08-6.14]). Rutherford class 6 ischemia was independently associated with reduced assisted patency (P = 0.004; HR 5.39 [95% CI 1.74-16.73]). Wound healing was adversely affected by diabetes (P = 0.02; HR 7.0 [95% CI 1.4-36.2]), continued smoking (P = 0.04; HR 5.3 [95% CI 1.1-26.3]), and patency loss (P = 0.04; HR 4.8 [95% CI 1.1-22.30]). Rutherford class 6 ischemia was independently associated with reduced limb salvage (P < 0.0001; HR 35.1 [95% CI 5.4-231.2]) and amputation-free survival (P = 0.007; HR 3.61 [95% CI 1.4-9.18]), in addition to COPD (P = 0.01; 3.58 [95% 1.28-9.55]). Independent predictors of poor overall survival included end-stage renal disease (P = 0.03; HR 2.99 [95% CI 1.1-8.05]), history of angina (P = 0.02; HR 5.08 [95% CI 1.28-20.29]), and COPD (P = 0.001; HR 3.77 [95% CI 1.76-8.34]). Conclusions Both increasing severity of tissue loss as well as the presence of severe medical comorbidities are associated with poorer outcomes of endovascular therapy in these patients. Although sustained limb salvage in patients with tissue loss may be achieved with endovascular therapy, this is due to poor overall survival and a competing mortality hazard.

AB - Background In this study we examine outcomes of endovascular therapy for critical limb ischemia with tissue loss and identify risk factors for failure of endovascular therapy across a panel of outcome metrics. Methods A retrospective review (2006-2010) of patients undergoing endovascular therapy for critical limb ischemia with tissue loss provided data for multivariate models of overall survival, amputation-free survival, limb salvage (LS), and wound healing. Results One hundred six patients underwent endovascular therapy for Rutherford class 5 (88%) or class 6 (12%) ischemia with ulceration and/or gangrene of the heel (15%), forefoot (16%), toe(s) (43%), calf/ankle (11%), or multiple locations (15%). Sustained limb salvage at 1 year was 87%. One-year overall survival and amputation-free survival were 65% and 49%, respectively. Multivariate regression models identified independent risk factors for reduced primary patency: Rutherford 6 ischemia (P = 0.008; HR 4.7 [95% confidence interval 1.5-14.8]) and infrapopliteal intervention (P = 0.03; HR 2.58 [95% CI 1.08-6.14]). Rutherford class 6 ischemia was independently associated with reduced assisted patency (P = 0.004; HR 5.39 [95% CI 1.74-16.73]). Wound healing was adversely affected by diabetes (P = 0.02; HR 7.0 [95% CI 1.4-36.2]), continued smoking (P = 0.04; HR 5.3 [95% CI 1.1-26.3]), and patency loss (P = 0.04; HR 4.8 [95% CI 1.1-22.30]). Rutherford class 6 ischemia was independently associated with reduced limb salvage (P < 0.0001; HR 35.1 [95% CI 5.4-231.2]) and amputation-free survival (P = 0.007; HR 3.61 [95% CI 1.4-9.18]), in addition to COPD (P = 0.01; 3.58 [95% 1.28-9.55]). Independent predictors of poor overall survival included end-stage renal disease (P = 0.03; HR 2.99 [95% CI 1.1-8.05]), history of angina (P = 0.02; HR 5.08 [95% CI 1.28-20.29]), and COPD (P = 0.001; HR 3.77 [95% CI 1.76-8.34]). Conclusions Both increasing severity of tissue loss as well as the presence of severe medical comorbidities are associated with poorer outcomes of endovascular therapy in these patients. Although sustained limb salvage in patients with tissue loss may be achieved with endovascular therapy, this is due to poor overall survival and a competing mortality hazard.

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