Cryopreserved Saphenous Vein Allograft in Patients With Critical Limb Ischemia for Peripheral Revascularization

NCT ID: NCT01799811

Last Updated: 2024-08-19

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

30 participants

Study Classification

OBSERVATIONAL

Study Start Date

2013-02-28

Study Completion Date

2016-06-30

Brief Summary

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The objective Study is to evaluate the short- and long-term clinical outcomes of patients receiving the CryoVein cryopreserved saphenous vein allograft (CVA) as their primary open bypass conduit to assess if there is a quantifiable correlation to time of placement as a primary bypass graft and improved long-term clinical outcomes of patients with critical limb ischemia (CLI).

Detailed Description

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A minimum of 50 CVA will be implanted in enrolled patients at up to 6 participating sites. The Study will include prospective evaluations on these patients at discharge, 1, 3, 6, 9, 12, 18 and 24 months following surgery. The window for follow-up visits is ± 2 weeks for each time point. All Study patients will be expected to participate in all follow-up evaluations unless precluded by patient death.

Patient status and graft performance data will be collected on all patients consented and enrolled into the Study. The primary endpoint of the Study will be limb salvage. The secondary endpoints of the Study will include primary patency, secondary patency, morbidity and mortality per the same reporting standards.

Patient attributes (age, gender, etc.) and preoperative assessments (indication for surgery, medical history) will be summarized using descriptive statistics. Graft performance will be presented as freedom from an event endpoint (patient death, graft complication, amputation, graft explant) as calculated by the Kaplan-Meier method. Log Rank and Cox Regression will be utilized for comparison between subgroups of the patient population. Statistical software will be used to compile and analyze all submitted clinical data.

The method of data reporting may include, but is not limited to, a description of the sample population, frequency distributions of patient demographics, allograft statistics, and follow-up percentages, summary of event data, correlation analysis, and actuarial analysis

Conditions

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Critical Limb Ischemia Peripheral Arterial Disease

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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CLI patient's needing open bypass

Patients presenting with Rutherford Class 5 or 6 CLI that are being evaluated for open peripheral arterial revascularization.

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

* Patient is an acceptable candidate to receive primary open bypass on the limb receiving the CVA.
* CLI diagnosis of Rutherford Class 5 or 6.
* Tibio-peroneal trunk, Tibial or Peroneal outflow artery.
* Minimum of 1 patent run-off artery.
* Serum Creatinine \< 2.4 mg/dl.
* Life expectancy \> 2 years from consent.
* 18 years of age or older at the time of consent.
* Male or non-pregnant female.
* Ability to understand and provide written informed consent.
* Willing and able to attend and cooperate with the follow-up examinations.
* Able to follow Study required post-operative daily aspirin and/or other oral anticoagulation/antiplatelet regimen.

Exclusion Criteria

* Patient currently receiving hemodialysis for end stage renal disease.
* Known hypercoaguable state.
* Known heparin allergy.
* Patients with any condition which, in the opinion of the investigator could preclude evaluation of response or completion of follow-up or affect patient safety.
* Currently being treated with an investigational device or drug (within 3 months prior to surgery).
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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CryoLife, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Scott B Capps, MS

Role: STUDY_DIRECTOR

CryoLife, Inc.

Locations

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Arizona Heart Institue

Phoenix, Arizona, United States

Site Status

Veteran's Administration

Palo Alto, California, United States

Site Status

University of California at San Francisco

San Francisco, California, United States

Site Status

Sacred Heart Hospital

Pensacola, Florida, United States

Site Status

Carle Foundation Hospital

Urbana, Illinois, United States

Site Status

University of Texas Medical Branch

Galveston, Texas, United States

Site Status

Scott & White Memorial Hospital

Temple, Texas, United States

Site Status

Countries

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United States

References

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Walker PJ, Mitchell RS, McFadden PM, James DR, Mehigan JT. Early experience with cryopreserved saphenous vein allografts as a conduit for complex limb-salvage procedures. J Vasc Surg. 1993 Oct;18(4):561-8; discussion 568-9.

Reference Type BACKGROUND
PMID: 8411463 (View on PubMed)

Shah RM, Faggioli GL, Mangione S, Harris LM, Kane J, Taheri SA, Ricotta JJ. Early results with cryopreserved saphenous vein allografts for infrainguinal bypass. J Vasc Surg. 1993 Dec;18(6):965-9; discussion 969-71. doi: 10.1067/mva.1993.50617.

Reference Type BACKGROUND
PMID: 8264053 (View on PubMed)

Leseche G, Penna C, Bouttier S, Joubert S, Andreassian B. Femorodistal bypass using cryopreserved venous allografts for limb salvage. Ann Vasc Surg. 1997 May;11(3):230-6. doi: 10.1007/s100169900039.

Reference Type BACKGROUND
PMID: 9140596 (View on PubMed)

Martin RS 3rd, Edwards WH, Mulherin JL Jr, Edwards WH Jr, Jenkins JM, Hoff SJ. Cryopreserved saphenous vein allografts for below-knee lower extremity revascularization. Ann Surg. 1994 Jun;219(6):664-70; discussion 670-2. doi: 10.1097/00000658-199406000-00009.

Reference Type BACKGROUND
PMID: 8203975 (View on PubMed)

Farber A, Major K, Wagner WH, Cohen JL, Cossman DV, Lauterbach SR, Levin PM. Cryopreserved saphenous vein allografts in infrainguinal revascularization: analysis of 240 grafts. J Vasc Surg. 2003 Jul;38(1):15-21. doi: 10.1016/s0741-5214(03)00330-6.

Reference Type BACKGROUND
PMID: 12844083 (View on PubMed)

Bannazadeh M, Sarac TP, Bena J, Srivastava S, Ouriel K, Clair D. Reoperative lower extremity revascularization with cadaver vein for limb salvage. Ann Vasc Surg. 2009 Jan-Feb;23(1):24-31. doi: 10.1016/j.avsg.2008.04.011. Epub 2008 Jul 26.

Reference Type BACKGROUND
PMID: 18657383 (View on PubMed)

Buckley CJ, Abernathy S, Lee SD, Arko FR, Patterson DE, Manning LG. Suggested treatment protocol for improving patency of femoral-infrapopliteal cryopreserved saphenous vein allografts. J Vasc Surg. 2000 Oct;32(4):731-8. doi: 10.1067/mva.2000.110049.

Reference Type BACKGROUND
PMID: 11013037 (View on PubMed)

Zehr BP, Niblick CJ, Downey H, Ladowski JS. Limb salvage with CryoVein cadaver saphenous vein allografts used for peripheral arterial bypass: role of blood compatibility. Ann Vasc Surg. 2011 Feb;25(2):177-81. doi: 10.1016/j.avsg.2010.07.020.

Reference Type BACKGROUND
PMID: 20889296 (View on PubMed)

Randon C, Jacobs B, De Ryck F, Beele H, Vermassen F. Fifteen years of infrapopliteal arterial reconstructions with cryopreserved venous allografts for limb salvage. J Vasc Surg. 2010 Apr;51(4):869-77. doi: 10.1016/j.jvs.2009.11.062.

Reference Type BACKGROUND
PMID: 20347683 (View on PubMed)

Other Identifiers

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AVG1201.000-M

Identifier Type: -

Identifier Source: org_study_id

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