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Tay S, Abdulnabi S, Saffaf O, Harroun N, Yang C, Semenkovich CF, Zayed MA. Comprehensive Assessment of Current Management Strategies for Patients With Diabetes and Chronic Limb-Threatening Ischemia. Clin Diabetes 2021; 39:358-388. [PMID: 34866779 PMCID: PMC8603325 DOI: 10.2337/cd21-0019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Chronic limb-threatening ischemia (CLTI) is the most severe form of peripheral artery disease. It is estimated that 60% of all nontraumatic lower-extremity amputations performed annually in the United States are in patients with diabetes and CLTI. The consequences of this condition are extraordinary, with substantial patient morbidity and mortality and high socioeconomic costs. Strategies that optimize the success of arterial revascularization in this unique patient population can have a substantial public health impact and improve patient outcomes. This article provides an up-to-date comprehensive assessment of management strategies for patients afflicted by both diabetes and CLTI.
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Affiliation(s)
- Shirli Tay
- Department of Surgery, Section of Vascular Surgery, Washington University School of Medicine, St. Louis, MO
| | - Sami Abdulnabi
- Department of Surgery, Section of Vascular Surgery, Washington University School of Medicine, St. Louis, MO
| | - Omar Saffaf
- Department of Surgery, Section of Vascular Surgery, Washington University School of Medicine, St. Louis, MO
| | - Nikolai Harroun
- Department of Surgery, Section of Vascular Surgery, Washington University School of Medicine, St. Louis, MO
| | - Chao Yang
- Department of Surgery, Section of Vascular Surgery, Washington University School of Medicine, St. Louis, MO
| | - Clay F. Semenkovich
- Department of Internal Medicine, Division of Endocrinology, Metabolism and Lipid Research, Washington University School of Medicine, St. Louis, MO
| | - Mohamed A. Zayed
- Department of Surgery, Section of Vascular Surgery, Washington University School of Medicine, St. Louis, MO
- Division of Molecular Cell Biology, Washington University School of Medicine, St. Louis, MO
- Department of Biomedical Engineering, Washington University McKelvey School of Engineering, St. Louis, MO
- Veterans Affairs St. Louis Health Care System, St. Louis, MO
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Humbarger O, Siracuse JJ, Rybin D, Stone DH, Goodney PP, Schermerhorn ML, Farber A, Jones DW. Broad variation in prosthetic conduit use for femoral-popliteal bypass is not justified on the basis of contemporary outcomes favoring autologous great saphenous vein. J Vasc Surg 2019; 70:1514-1523.e2. [DOI: 10.1016/j.jvs.2019.02.046] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 02/24/2019] [Indexed: 12/12/2022]
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Neufang A, Espinola-Klein C, Savvidis S, Schmiedt W, Poplawski A, Vahl CF, Dorweiler B. External polytetrafluoroethylene reinforcement of varicose autologous vein grafts in peripheral bypass surgery produces durable bypass function. J Vasc Surg 2018; 67:1778-1787. [DOI: 10.1016/j.jvs.2017.09.039] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 09/13/2017] [Indexed: 11/15/2022]
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Neufang A. Indikationen und Ergebnisse der Bypasschirurgie bei kritischer Extremitätenischämie (CLI). GEFASSCHIRURGIE 2015. [DOI: 10.1007/s00772-015-0024-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Vauclair F, Haller C, Marques-Vidal P, Déglise S, Haesler E, Corpataux JM, Saucy F. Infrainguinal Bypass for Peripheral Arterial Occlusive Disease: When Arms Save Legs. Eur J Vasc Endovasc Surg 2012; 43:48-53. [DOI: 10.1016/j.ejvs.2011.08.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2011] [Accepted: 08/06/2011] [Indexed: 11/25/2022]
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Eugster T, Marti R, Gurke L, Stierli P. Ten Years After Arterial Bypass Surgery for Claudication: Venous Bypass is the Primary Procedure for TASC C and D Lesions. World J Surg 2011; 35:2328-31. [DOI: 10.1007/s00268-011-1237-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Das TS, McNamara T, Gray B, Sedillo GJ, Turley BR, Kollmeyer K, Rogoff M, Aruny JE. Primary cryoplasty therapy provides durable support for limb salvage in critical limb ischemia patients with infrapopliteal lesions: 12-month follow-up results from the BTK Chill Trial. J Endovasc Ther 2009; 16:II19-30. [PMID: 19624073 DOI: 10.1583/08-2652.1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
PURPOSE To report the 12-month follow-up data from the prospective 16-center Below-the-Knee (BTK) Chill Trial, which examined the use of primary cryoplasty for BTK occlusive disease in patients with critical limb ischemia (CLI). METHODS The trial included 108 patients (77 men; mean age 73 +/- 11 years, range 41-101) with CLI (Rutherford categories 4-6) involving 111 limbs with 115 target infrapopliteal lesions. Angiographic inclusion criteria were reference vessel diameter > or = 2.5 mm and < or = 5.0 mm and target lesion stenosis > or = 50%. The primary study endpoints were acute technical success (the ability to achieve < or = 50% residual stenosis and continuous inline flow to the foot) and absence of major amputation of the target limb at 6 months. Secondary endpoints were serious adverse events specifically related to use of primary cryoplasty and absence of major amputation of the target limb at 1, 3, and 12 months. RESULTS Acute technical success was achieved in 108 (97.3%) of treated limbs, with only 1 clinically significant dissection (> or = type C) and 2 residual stenoses >50%; stent placement was required following cryoplasty in only 3 (2.7%) procedures. At 6 months and 1 year, major amputation was avoided in 93.4% (85/91) and 85.2% (69/81) of patients, respectively. Through 1 year, 21% (17/81) of patients underwent target limb revascularization. Rates of major amputation and death at 1 year were 0% for limbs of patients with initial Rutherford category 4; 11.4% and 0%, respectively, for initial category 5; and 40.0% and 31.8% for initial category 6. One-year rates of major amputation and death were 20.4% and 8.8%, respectively, for diabetics, versus 4.0% and 10.7% for non-diabetics. At 1 year, major amputation occurred in 16.7% (2/12) of limbs that were expected to be amputated at the time of treatment. CONCLUSION Cryoplasty therapy is a safe and effective method of treating infrapopliteal disease, providing excellent results and a high rate of limb salvage in patients with CLI. Study outcomes through 1 year support the use of cryoplasty as a primary treatment option for patients with CLI secondary to BTK occlusive disease.
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Affiliation(s)
- Tony S Das
- Cardiology & Interventional Vascular Associates, Presbyterian Heart Institute, 7150 Greenville Avenue, Suite 500, Dallas, TX 75231, USA.
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Loor G, Skelly CL, Wahlgren CM, Bassiouny HS, Piano G, Shaalan W, Desai TR. Is atherectomy the best first-line therapy for limb salvage in patients with critical limb ischemia? Vasc Endovascular Surg 2009; 43:542-50. [PMID: 19640919 DOI: 10.1177/1538574409334825] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE To determine the efficacy of atherectomy for limb salvage compared with open bypass in patients with critical limb ischemia. METHODS Ninety-nine consecutive bypass and atherectomy procedures performed for critical limb ischemia between January 2003 and October 2006 were reviewed. RESULTS A total of 99 cases involving TASC C (n = 43, 44%) and D (n = 56, 56%) lesions were treated with surgical bypass in 59 patients and atherectomy in 33 patients. Bypass and atherectomy achieved similar 1-year primary patency (64% vs 63%; P = .2). However, the 1-year limb salvage rate was greater in the bypass group (87% vs 69%; P = .004). In the tissue loss subgroup, there was a greater limb salvage rate for bypass patients versus atherectomy (79% vs 60%; P = .04). CONCLUSIONS Patients with critical limb ischemia may do better with open bypass compared with atherectomy as first-line therapy for limb salvage.
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Affiliation(s)
- Gabriel Loor
- Department of Vascular Surgery, University of Chicago, Chicago, Illinois, USA
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Slovut DP, Sullivan TM. Combined Endovascular and Open Revascularization. Ann Vasc Surg 2009; 23:414-24. [DOI: 10.1016/j.avsg.2008.12.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2008] [Accepted: 12/05/2008] [Indexed: 11/29/2022]
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Lantis J, Jensen M, Benvenisty A, Mendes D, Gendics C, Todd G. Outcomes of Combined Superficial Femoral Endovascular Revascularization and Popliteal to Distal Bypass for Patients with Tissue Loss. Ann Vasc Surg 2008; 22:366-71. [DOI: 10.1016/j.avsg.2007.09.016] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2007] [Revised: 09/17/2007] [Accepted: 09/19/2007] [Indexed: 11/29/2022]
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Das T, McNamara T, Gray B, Sedillo GJ, Turley BR, Kollmeyer K, Rogoff M, Aruny JE. Cryoplasty therapy for limb salvage in patients with critical limb ischemia. J Endovasc Ther 2008; 14:753-62. [PMID: 18052590 DOI: 10.1583/07-2147.1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
PURPOSE To report the 6-month outcomes from a prospective multicenter study investigating the use of cryoplasty (cold balloon angioplasty) to treat below-knee occlusive disease in patients with critical limb ischemia (CLI). METHODS Between August 2004 and October 2005, 108 patients (77 men; mean age 73+/-12 years, range 41-101) with CLI involving 111 limbs were enrolled in a prospective multicenter trial (Below-the-Knee Chill Study), which was conducted at 16 institutions. The primary study endpoints were acute technical success, defined as the ability to achieve < or =50% residual stenosis and continuous inline flow to the foot, and absence of major (above or below-knee) amputation of the target limb 180 days post procedure. RESULTS Acute technical success was achieved in 108 (97.3%) of the 111 limbs treated, with only 1 (0.9%) clinically significant dissection (> or =type C) and 2 residual stenoses >50%. During the 180-day follow-up, 15 (13.9%) of the initial 108 patients either withdrew or were lost to follow-up. Five (4.6%) deaths occurred, leaving 88 (81.5%) patients with 91 (82.0%) treated limbs available for 180-day assessment. The rate of freedom from major amputation at 180 days was 93.4%. Amputation-free survival was 89.3% at 180 days (5 deaths, 6 major amputations). Stratifying data by diabetics (n=71) versus non-diabetics (n=34), the 180-day death and amputation rates were 4.9% and 10.0%, respectively, for diabetics versus 6.7% and 0.0%, respectively, for non-diabetics. CONCLUSION Cryoplasty therapy is a safe and effective method of treating infrapopliteal disease, providing excellent acute outcomes and a high rate of limb salvage in patients with CLI. Study outcomes support the use of cryoplasty therapy as a primary treatment option for patients with CLI secondary to below- knee disease.
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Affiliation(s)
- Tony Das
- Cardiology & Interventional Vascular Associates, Presbyterian Heart Institute, Dallas, TX 75231, USA.
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Slovut DP, Demaioribus CA. Hybrid Revascularization Using Silverhawk Atherectomy and Infrapopliteal Bypass for Limb Salvage. Ann Vasc Surg 2007; 21:796-800. [PMID: 17728100 DOI: 10.1016/j.avsg.2007.07.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Patients with limb-threatening ischemia and a paucity of ipsilateral greater saphenous vein for conduit represent a challenge for lower extremity revascularization. We present four patients with limited autogenous conduit who underwent hybrid revascularization using the Silverhawk atherectomy device and infrapopliteal artery bypass for limb-threatening ischemia. All patients experienced complete wound healing in early follow-up. Hybrid revascularization appears safe, produces excellent short-term outcomes, and may be appropriate for patients with limited autogenous vein who require lower extremity revascularization.
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Affiliation(s)
- David P Slovut
- Department of Vascular Medicine, St. Mary's/Duluth Clinic, Duluth, MN, USA.
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Abou-Zamzam AM, Gomez NR, Molkara A, Banta JE, Teruya TH, Killeen JD, Bianchi C. A prospective analysis of critical limb ischemia: factors leading to major primary amputation versus revascularization. Ann Vasc Surg 2007; 21:458-63. [PMID: 17499967 DOI: 10.1016/j.avsg.2006.12.006] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2006] [Accepted: 12/18/2006] [Indexed: 01/11/2023]
Abstract
In our aging population, primary major amputations (AMP, below-knee or above-knee) continue to be performed despite advances in revascularization. We hypothesized that not only patient comorbidities but also the system of health-care delivery affected the treatment of patients with critical limb ischemia (CLI). A prospective analysis of patients presenting with CLI was undertaken to determine whether patient-specific factors or healthcare delivery factors (system-related) influenced treatment with primary AMP versus lower extremity revascularization (LER). The patient-specific factors age, gender, race/ethnicity, presence of coronary artery disease, cerebrovascular disease, tobacco use, diabetes mellitus (DM), dialysis dependence (end-stage renal disease, ESRD), hypertension, hyperlipidemia, stage of CLI (rest pain, minor or major tissue loss), history of revascularization, and functional status (living situation and ambulatory status) were recorded. The system-related factors time from onset of CLI to vascular surgery evaluation and type of insurance (managed care/other insurance) were also noted. The influence of patient-specific and system-related factors on the primary treatment modality (AMP versus LER) was determined with univariate and multivariate analyses. A total of 224 patients presented with CLI between March 1, 2001, and March 1, 2005. Patients were treated with primary major AMP in 97 cases (43%) and revascularization in 127 cases (57%). On univariate analysis, nonwhite race/ethnicity, DM, ESRD, major tissue loss, dependent living situation, and nonambulatory status were all significant predictors of AMP versus LER (all P < 0.01). On multivariate analysis, major tissue loss, ESRD, DM, and nonambulatory status remained independent predictors of AMP versus LER (all P < 0.05). The system-related factors of time to vascular surgery evaluation (mean 8.6 weeks, 7.1 vs. 9.3 weeks AMP versus LER, P = 0.60) and type of insurance (managed care, 17% vs. 24% AMP vs. LER, P = 0.15) had no influence on treatment. Fifty-four percent of all primary major AMPs were performed due to extensive gangrene or infection present at initial vascular evaluation which precluded limb salvage. Major tissue loss, ESRD, DM, and nonambulatory status are all independent predictors of treatment with primary AMP as opposed to revascularization. Treatment of CLI is determined by patient-specific factors and does not appear to be adversely influenced by system-related factors. Efforts toward improving limb salvage may be best directed at aggressive treatment of medical comorbidities to prevent the late complications of CLI. Earlier recognition of tissue loss and referral to the vascular specialist may lead to improved limb salvage.
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Affiliation(s)
- Ahmed M Abou-Zamzam
- Department of Surgery, Loma Linda University Medical Center, 11175 Campus Street, Loma Linda, CA 92354, USA.
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Schwarze ML, Sayla MA, Alexander GC. A comparison of patient and physician beliefs about infrainguinal bypass operation: What role should surgical optimism play? Surgery 2007; 141:239-44. [PMID: 17263981 DOI: 10.1016/j.surg.2006.07.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2005] [Revised: 07/10/2006] [Accepted: 07/12/2006] [Indexed: 10/24/2022]
Abstract
BACKGROUND Risk and outcomes of infrainguinal bypass operation vary by identifiable patient characteristics. Previously, we found that although patients appear willing to undertake considerable risk, they may have unrealistic expectations for operative benefits. Little is known about whether patients and physicians have similar beliefs regarding the risks and benefits of the operation. METHODS Cross-sectional paired surveys of 6 surgeons and 45 of their patients undergoing infrainguinal bypass operation at a large university medical center. RESULTS Similar proportions of physicians and patients reported risks associated with the operation. There was moderate agreement within patient-surgeon pairs regarding specific risks such as the likely need for additional operations or for amputation despite the procedure (agreement ranging from 60% to 69% of patient-physician pairs). In nearly two thirds (62%) of cases surgeons provided more optimistic prognostic estimates of 5-year mortality than is suggested by prior research (McNemar test, P < .001). In turn, patients tended to be more optimistic regarding their estimated 5-year survival than their surgeons, with 56% of patients estimating a lesser 5-year mortality than that predicted by their surgeon (McNemar test, P < .01). CONCLUSIONS Although surgeons and patients generally agree regarding the risks of infrainguinal bypass operation, both groups appear more optimistic regarding likely 5-year survival than the outcomes suggested by prior research. This optimism may play an important role in the decision to proceed with infraninguinal bypass operation, as well as the preservation of hope regarding the potential long-term benefits of such intervention.
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Affiliation(s)
- Margaret L Schwarze
- Department of Surgery, MacLean Center for Clinical Medical Ethics, University of Chicago, IL, USA.
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Schwarze ML, Sayla MA, Alexander GC. Exploring Patient Preferences for Infrainguinal Bypass Operation. J Am Coll Surg 2006; 202:445-52. [PMID: 16500249 DOI: 10.1016/j.jamcollsurg.2005.11.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2005] [Revised: 11/04/2005] [Accepted: 11/09/2005] [Indexed: 11/24/2022]
Abstract
BACKGROUND Surgical risk and outcomes for patients undergoing infrainguinal bypass operation vary by identifiable patient characteristics, yet little is known about whether patients understand the risks, benefits, and alternatives to operation. STUDY DESIGN Cross-sectional surveys administered to 50 patients undergoing infrainguinal bypass operation at one institution an average of 7 days (median 4 days) before operations. RESULTS Most patients rated their health as fair or poor (53%) or good (35%), and the majority reported their vascular disease was associated with difficulty doing activities they enjoyed (71%), leg pain (86%), and difficulty walking (98%). About one-half of patients (54%) thought they would require additional operations, 21% reported being at risk for postoperative myocardial infarction and 24% believed they would require a major amputation despite operations. Over two-thirds of patients (69%) believed their overall health would improve postoperatively, although more than four-fifths (80% to 86%) believed their ability to perform activities, leg pain, and walking would improve. Eighty-eight percent of patients reported willingness to have the operation even with a 10% postoperative mortality rate and 96% of patients reported a preference for operations if the chance of successful outcomes was only 75%. CONCLUSIONS Although patients appear to be willing to undertake considerable postoperative risk, expectations for benefits from infrainguinal bypass operation appear greater than outcomes suggested by earlier research. These findings, if confirmed in larger studies, challenge how patient preferences should optimally be used to inform decisions about whether to undertake infrainguinal bypass operations.
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Albers M, Romiti M, Brochado-Neto FC, Pereira CAB. Meta-analysis of alternate autologous vein bypass grafts to infrapopliteal arteries. J Vasc Surg 2005; 42:449-55. [PMID: 16171586 DOI: 10.1016/j.jvs.2005.05.031] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2005] [Accepted: 05/15/2005] [Indexed: 11/19/2022]
Abstract
BACKGROUND Several studies have described acceptable results for infrapopliteal bypass surgery that uses an autogenous vein other than the greater saphenous vein but is still no reliable prediction of outcomes. The objective of this study was to use meta-analysis to assess the long-term outcomes after infrapopliteal bypass grafting done with alternate autologous veins. METHODS Studies published from 1982 through 2004 were identified from electronic databases and pertinent original articles. Thirty-two series were selected, all of which had used survival analysis and had reported a 1-year graft patency rate, with at least 15 bypasses. An interval success rate was calculated for each month in each series of grafts by using data from life tables, survival curves, and texts. Monthly success rates were combined across series to obtain a pooled estimate of success for each month. Pooled survival curves were then constructed for graft patency and foot preservation. RESULTS The 5-year pooled estimates were 46.9% (95% confidence interval [CI] = 35.5%-58.3%) for primary patency, 66.5% (95% CI = 54.9%-78.2%) for secondary patency, and 76.4% (95% CI = 68.0%-84.8%) for foot preservation. These results were far superior to those reported for nonautologous grafts. Intensive duplex surveillance had a favorable impact on graft patency and foot preservation. No publication bias was detected. CONCLUSIONS When the greater saphenous vein is unavailable, alternate autologous veins are preferable to other graft materials in bypass surgery to infrapopliteal arteries.
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Affiliation(s)
- Maximiano Albers
- Vascular Surgery Section, Department of Surgery, Health and Medical Sciences Sector, Lusiada Foundation, Santos, SP, Brazil.
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Baldwin ZK, Pearce BJ, Curi MA, Desai TR, McKinsey JF, Bassiouny HS, Katz D, Gewertz BL, Schwartz LB. Limb salvage after infrainguinal bypass graft failure. J Vasc Surg 2004; 39:951-7. [PMID: 15111843 DOI: 10.1016/j.jvs.2004.01.027] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE The purpose of this study was to examine the outcome of patients in whom an infrainguinal bypass graft failed. METHODS This was a retrospective analysis of consecutive patients undergoing infrainguinal bypass grafting in a single institution over 8 years. RESULTS Six hundred thirty-one infrainguinal bypass grafts were placed in 578 limbs in 503 patients during the study period. The indication for surgery was limb-threatening ischemia in 533 patients (85%); nonautologous conduits were used in 259 patients (41%), and 144 (23%) were repeat operations. After a mean follow-up of 28 +/- 1 months (median, 23 months; range, 0-99 months), 167 grafts (26%) had failed secondarily. The rate of limb salvage in patients with graft failure was poor, only 50% +/- 5% at 2 years after failure. The 2-year limb salvage rate depended on the initial indication for bypass grafting: 100% in patients with claudication (n = 16), 55% +/- 8% in patients with rest pain (n = 49), and 34% +/- 6% in patients with tissue loss (n = 73; P <.001). The prospect for limb salvage also depended on the duration that the graft remained patent. Early graft failure (<30 days; n = 25) carried a poor prognosis, with 2-year limb salvage of only 25% +/- 10%; limb salvage was 53% +/- 5% after intermediate graft failure (<2 years, n = 110) and 79% +/- 10% after late failure (>2 years, n = 15; P =.04). Multivariate analysis revealed shorter patency interval before failure (P =.006), use of warfarin sodium (Coumadin) postoperatively (P =.006), and infrapopliteal distal anastomosis (P =.01) as significant predictors for ultimate limb loss. CONCLUSION The overall prognosis for limb salvage in patients with failed infrainguinal bypass grafts is poor, particularly in patients with grafts placed because of tissue loss and those with early graft failure.
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Affiliation(s)
- Zachary K Baldwin
- Section of Vascular Surgery, Department of Surgery, University of Chicago, Chicago, Ill, USA
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