Clinical trial NCT01877252: Registry of First-line Treatments in Patients With Critical Limb Ischemia
Official title: National Registry Investigating the Effectiveness of Different First-line Treatment Strategies in Patients With Critical Limb Ischemia
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Critical Limb Ischemia
Keywords: critical limb ischemia
endovascular treatment
open surgical repair
diabetic foot
Lead sponsor: St. Franziskus Hospital
Sponsor class: OTHER
Collaborators: name: Deutsches Institut für Gefäßmedizinische Gesundheitsforschung gGmbH (DIGG)
name: Deutsche Gesellschaft für Gefäßchirurgie und Gefäßmedizin
First posted: 2013-06-13
Enrollment: 1200
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Observational model: COHORT
Time perspective: PROSPECTIVE
Sampling method: PROBABILITY_SAMPLE
Study population: The target population consists of patients suffering from critical limb ischemia lasting more than 2 weeks

Brief summary: The principal research question is which treatment modality between open surgical, endovascular and conservative therapy is the most effective in terms of limb salvage, survival and reinterventions in patients with critical limb ischemia

Detailed description: The target population consists of patients suffering from critical limb ischemia (CLI) lasting more than 2 weeks. CLI is defined as rest pain or tissue loss (Fontaine stages III-IV or Rutherford classes 4 to 6) and/or ankle-brachial index \< 0.40. Patient with acute limb-threatening ischemia, bone fractures in the relevant areas, nonatherosclerotic disease (e.g. arteriitis) and documented hypercoagulable diseases will be excluded from this study. There will be no experimental or control groups. The comparison groups will be:

Group 1: Best endovascular treatment (angioplasty +/- stent) Group 2: Best surgical treatment \[bypass (vein or prosthetic)\] Group 3: Femoral artery patchplasty +/- profundoplasty (+/- endovascular treatment) Group 4: Best conservative treatment

The proposed sample size amounts to 1200 patients.

To be assessed for eligibility (n=1200) To be allocated to trial (n=1000) To be analysed (n=900)

In CRITISCH registry, randomization or blinding is not feasible, because optimized standard care will be performed as established at each participating centre (best medical treatment). Data storage, validation, monitoring, update, backup and analysis will be performed centrally following established procedures. Web-based software will be used to develop a data model representing the data structure. The data validation will include standard data validation techniques such as the manual review of selected variables and the routine check of missing and outlying data points. Regional staff will be instructed and supervised by study nurse, who will perform the study monitoring. Assessment of relevant prognostic factors during the statistical analysis will prevent biased results due to the non-randomized design and the potential structural inequality.

Eligibility criteria: Inclusion Criteria:

* Rest pain or tissue loss (Fontaine stages III-IV or Rutherford classes 4 to 6) and/or ankle-brachial index \< 0.40

Exclusion Criteria:

* Acute limb-threatening ischemia
* Bone fractures in the relevant areas
* Non-atherosclerotic disease (e.g. arteriitis)
* Documented hypercoagulable diseases

Primary outcomes:
measure: Amputation-free survival
timeFrame: at 2 years
Secondary outcomes:
measure: Perioperative death
timeFrame: 30 days
measure: Major adverse limb event (MALE)
timeFrame: at 1 year, at 2 years
measure: Major adverse cardiovascular event (MACCE)
timeFrame: at 30 days, at 1 year, at 2 years
measure: Sustained clinical improvement
timeFrame: at 1 year, at 2 years
measure: Hemodynamic failure
timeFrame: at 30 days, at 1 year, at 2 years
Other outcomes:
Locations:
city: Muenster
country: Germany
facility: Department of Vascular Surgery, St. Franziskus Hospital
Study officials:
References:
citation: Setacci C, de Donato G, Teraa M, Moll FL, Ricco JB, Becker F, Robert-Ebadi H, Cao P, Eckstein HH, De Rango P, Diehm N, Schmidli J, Dick F, Davies AH, Lepantalo M, Apelqvist J. Chapter IV: Treatment of critical limb ischaemia. Eur J Vasc Endovasc Surg. 2011 Dec;42 Suppl 2:S43-59. doi: 10.1016/S1078-5884(11)60014-2.
citation: Becker F, Robert-Ebadi H, Ricco JB, Setacci C, Cao P, de Donato G, Eckstein HH, De Rango P, Diehm N, Schmidli J, Teraa M, Moll FL, Dick F, Davies AH, Lepantalo M, Apelqvist J. Chapter I: Definitions, epidemiology, clinical presentation and prognosis. Eur J Vasc Endovasc Surg. 2011 Dec;42 Suppl 2:S4-12. doi: 10.1016/S1078-5884(11)60009-9.
citation: Adam DJ, Beard JD, Cleveland T, Bell J, Bradbury AW, Forbes JF, Fowkes FG, Gillepsie I, Ruckley CV, Raab G, Storkey H; BASIL trial participants. Bypass versus angioplasty in severe ischaemia of the leg (BASIL): multicentre, randomised controlled trial. Lancet. 2005 Dec 3;366(9501):1925-34. doi: 10.1016/S0140-6736(05)67704-5.
citation: Bradbury AW, Adam DJ, Bell J, Forbes JF, Fowkes FG, Gillespie I, Ruckley CV, Raab GM; BASIL trial Participants. Bypass versus Angioplasty in Severe Ischaemia of the Leg (BASIL) trial: An intention-to-treat analysis of amputation-free and overall survival in patients randomized to a bypass surgery-first or a balloon angioplasty-first revascularization strategy. J Vasc Surg. 2010 May;51(5 Suppl):5S-17S. doi: 10.1016/j.jvs.2010.01.073.
citation: Conte MS, Geraghty PJ, Bradbury AW, Hevelone ND, Lipsitz SR, Moneta GL, Nehler MR, Powell RJ, Sidawy AN. Suggested objective performance goals and clinical trial design for evaluating catheter-based treatment of critical limb ischemia. J Vasc Surg. 2009 Dec;50(6):1462-73.e1-3. doi: 10.1016/j.jvs.2009.09.044. Epub 2009 Nov 7.
citation: Stavroulakis K, Borowski M, Torsello G, Bisdas T; CRITISCH Collaborators. One-Year Results of First-Line Treatment Strategies in Patients With Critical Limb Ischemia (CRITISCH Registry). J Endovasc Ther. 2018 Jun;25(3):320-329. doi: 10.1177/1526602818771383. Epub 2018 Apr 26.
citation: Meyer A, Fiessler C, Stavroulakis K, Torsello G, Bisdas T, Lang W; CRITISCH collaborators. Outcomes of dialysis patients with critical limb ischemia after revascularization compared with patients with normal renal function. J Vasc Surg. 2018 Sep;68(3):822-829.e1. doi: 10.1016/j.jvs.2017.12.048. Epub 2018 Mar 26.
citation: Stavroulakis K, Borowski M, Torsello G, Bisdas T; CRITISCH collaborators. Association between statin therapy and amputation-free survival in patients with critical limb ischemia in the CRITISCH registry. J Vasc Surg. 2017 Nov;66(5):1534-1542. doi: 10.1016/j.jvs.2017.05.115. Epub 2017 Aug 12.
citation: Uhl C, Steinbauer M, Torsello G, Bisdas T; The CRITISCH collaborators. Outcomes After Endovascular Revascularization in Octogenarians and Non-Octogenarians With Critical Limb Ischemia. J Endovasc Ther. 2017 Aug 1;24(4):471-477. doi: 10.1177/1526602817711424. Epub 2017 Jun 5.
citation: Bisdas T, Borowski M, Stavroulakis K, Torsello G; CRITISCH Collaborators. Endovascular Therapy Versus Bypass Surgery as First-Line Treatment Strategies for Critical Limb Ischemia: Results of the Interim Analysis of the CRITISCH Registry. JACC Cardiovasc Interv. 2016 Dec 26;9(24):2557-2565. doi: 10.1016/j.jcin.2016.09.039.
citation: Meyer A, Lang W, Borowski M, Torsello G, Bisdas T; CRITISCH collaborators. In-hospital outcomes in patients with critical limb ischemia and end-stage renal disease after revascularization. J Vasc Surg. 2016 Apr;63(4):966-73. doi: 10.1016/j.jvs.2015.10.009. Epub 2016 Feb 1.
citation: Bisdas T, Borowski M, Torsello G; First-Line Treatments in Patients With Critical Limb Ischemia (CRITISCH) Collaborators. Current practice of first-line treatment strategies in patients with critical limb ischemia. J Vasc Surg. 2015 Oct;62(4):965-973.e3. doi: 10.1016/j.jvs.2015.04.441. Epub 2015 Jul 14.