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CompletedNCT02921542REXUpdated Jul 18, 2019

An Evaluation of a Clinical Algorithm With Turbo-Power Following Treatment of Specific Morphologies

An observational study in Peripheral Arterial Disease, sponsored by Spectranetics Corporation. Completed at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2019-07-18.

Sponsored by Spectranetics Corporation · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
57
Ages
18 Years and older
Sex
All
01

Study summary

To evaluate vessel lumen quality (gain) and patient outcomes based on treatment with a predetermined laser treatment protocol in patients presenting with varying lesion types or morphologies: homogenous (plaques with a uniform texture-smooth and regular), heterogeneous (plaques with non-uniform texture-smooth and irregular surface), calcific (consisting of calcium) and restenotic (reoccurring narrowing of the vessel following prior treatment) associated with peripheral arterial disease (PAD).

Read the detailed description

Purpose: To evaluate vessel lumen quality (gain) and patient outcomes based on treatment with a predetermined laser treatment protocol in patients presenting with varying lesion types or morphologies: homogenous (plaques with a uniform texture-smooth and regular), heterogeneous (plaques with non-uniform texture-smooth and irregular surface), calcific (consisting of calcium) and restenotic (reoccurring narrowing of the vessel following prior treatment) associated with peripheral arterial disease (PAD).

Participants: 60 patients with PAD undergoing a revascularization procedure (treatment of a narrowed blood vessel) involving above the knee (ATK) lesion(s) eligible for treatment with laser atherectomy (a option for treatment of blocked blood vessels.)

Procedures (methods): Patients' qualifying lesions will be assessed with angiography (a test that uses a special dye and camera to take pictures of the blood flow in an artery) and intravascular ultrasound (IVUS) and categorized (homogenous, heterogeneous, calcific or restenotic) and determined to be treatable with laser atherectomy per standard of care. Qualified patients will undergo standard of care treatment with the Spectranetics Turbo-Power laser catheter for three passes with increasing settings 'low' (40/60), 'medium' (50/40) and 'high'(60/60), respectively. After each pass, assessments of lumen quality and residual stenosis (narrowing still present after treatment) will be determined by angiogram and IVUS. The operator may finish the procedure per standard of care/investigator discretion after the protocol defined laser passes are completed.

02

Conditions studied

03

In context

Peripheral Arterial Disease

1,542 studies on the registry are indexed under Peripheral Arterial Disease; 282 are open to participants now.

This study's enrollment of 57 is below the median of 190 across 410 observational studies indexed under Peripheral Arterial Disease.

Browse Peripheral Arterial Disease studies →

Lead sponsor

Spectranetics Corporation is the lead sponsor of 19 studies on the registry; none are open to participants now.

Of its 5 completed or terminated interventional studies of FDA-regulated products, 4 (80%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Consecutive patients with homogenous, heterogeneous, calcific, or restenotic with above the knee lesions eligible for treatment with laser atherectomy with Turbo-Power (target will be 15 patients enrolled in each category by lesions morphology).

Inclusion criteria

  1. Patient age at least 18 years.
  2. Patient has been informed of the nature of the study, agrees to participate and has signed an approved consent form.
  3. Rutherford category 1, 2, 3, or 4
  4. Subject Patient presents with clinical evidence of PAD requiring endovascular intervention.
  5. Target lesion access must use the femoral approach that will accommodate at least a 7Fr sheath.
  6. Angiographic evidence of significant restenosis (≥ 50% by visual estimate).

Exclusion criteria

Exclusion Criteria:

  1. Inability to obtain informed consent.
  2. Life expectancy \< 12 months.
  3. Pregnancy, suspected pregnancy, or breastfeeding during study period. (Patients of childbearing potential must have negative serum pregnancy test 7 days prior to treatment.
  4. Any evidence of hemodynamic instability prior to procedure/randomization
  5. Coagulopathy or clotting disorders.
  6. Present or suspected systemic infection or osteomyelitis affecting target limb.
  7. Contraindication to contrast media or any study-required medication (antiplatelets, anticoagulants, thrombolytic, etc).
05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
57 participants (actual)
Patient registry
No

Groups and cohorts

  • Homogenous Lesions

    Device: Laser Atherectomy

  • Heterogenous Lesions

    Device: Laser Atherectomy

  • Calcific Lesions

    Device: Laser Atherectomy

  • Restenotic Lesions

    Device: Laser Atherectomy

Interventions

  • DeviceLaser Atherectomy

    The Turbo-Power is laser atherectomy catheter designed for treatment of de novo or restenotic lesions in native infrainguinal arteries and for the treatment of femoropopliteal artery in-stent restenosis (ISR) in bare nitinol stents with adjunctive percutaneous transluminal angioplasty (PTA).

06

What researchers measure

Primary outcomes

  1. Reduction of stenosis

    1. Final reduction of stenosis post procedure, determined by angiogram and intravascular ultrasound (IVUS).

    Time frame: immediately post-procedure

07

Study locations

1 site
  • Rex Hospital
    Raleigh, North Carolina 27607, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 18, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02921542
Lead sponsor
Spectranetics Corporation
Responsible party
Sponsor
First posted
Oct 3, 2016
Start date
Aug 15, 2016
Primary completion
May 15, 2018
Completion
May 1, 2019
Last update
Jul 18, 2019

Study contacts

George Adams, MD
principal investigator · UNC Hospitals - REX

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jul 2019. You cannot join it, but the record below documents what was studied.

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