Coronary Rotational Atherectomy Elective vs. Bailout in Severely Calcified Lesions and Chronic Renal Failure
CRATER
CRATER Trial: Coronary Rotational Atherectomy Elective vs. Bailout in Patients With Severely Calcified Lesions and Chronic Renal Failure
1 other identifier
interventional
124
1 country
1
Brief Summary
The current role of the rotational atherectomy is for non-dilatable coronary lesions and for severely calcified lesions that may interfere with optimal stent expansion. Severely calcified coronary lesions are associated with worse outcomes. In this regard, chronic kidney disease is associated with severely calcified coronary arteries. Some evidence suggests that elective rotational atherectomy used by experienced operators can be safe and effective, minimizing time and complications for patients with heavily calcified lesions. However, there is no direct randomized comparison between rotational atherectomy and angioplasty alone in the setting of chronic renal failure and with intravascular ultrasound assessment for detecting severely calcified coronary arteries.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P25-P50 for not_applicable coronary-artery-disease
Started Feb 2019
Typical duration for not_applicable coronary-artery-disease
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
February 2, 2019
CompletedFirst Submitted
Initial submission to the registry
April 6, 2022
CompletedFirst Posted
Study publicly available on registry
April 29, 2022
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 27, 2022
CompletedStudy Completion
Last participant's last visit for all outcomes
December 4, 2023
CompletedApril 29, 2022
April 1, 2022
3.9 years
April 6, 2022
April 25, 2022
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
The healthcare cost analysis between elective atherectomy and conventional atherectomy (bailout)
The costs included the items, supplies, and time used in the catheterization laboratory, and expenses caused by complications during hospital length of stay and 30 days after the procedure.
Periprocedural and 30 days after the procedure
Secondary Outcomes (8)
The healthcare cost analysis between elective atherectomy and conventional atherectomy (bailout)
Follow-up 5 years.
Contrast-induced nephropathy
48 hours after the procedure.
Stent placement success
Periprocedural
The amount of angioplasty balloons used in each group before stent deployment.
Periprocedural
Procedure and fluoroscopy times
Periprocedural
- +3 more secondary outcomes
Study Arms (2)
Elective Rotational Atherectomy
ACTIVE COMPARATOROperators can decide elective use of rotational atherectomy (RA) or conventional angioplasty according to the calcification patterns of the coronary lesion evaluated by Intravascular ultrasound (IVUS) or by angiography if the IVUS cannot cross the lesion. Procedure is performed with a Rotablator system, consisting of a rotating olive-shaped burr whose leading hemisphere is coated with microscopic diamond chips. The proximal end of the device has a housing unit containing the burr advancer, a fiberoptic tachometer cable, an irrigation port, and a nitrogen gas delivery hose, which permits the rapidly rotating of the burr. The RA catheter is introduced into the coronary artery over a stainless steel 0.09-inch wire to cross the lesion, then advanced with a slow pecking motion at a speed of 160,000 to 190,000 rpm with each ablation run \<15 seconds is performed. Burr size was with a burr/vessel ratio of 0.7. After RA, all patients received IVUS-guided percutaneous coronary intervention.
Bailout Rotational Atherectomy
ACTIVE COMPARATORThe operators began with conventional angioplasty (non-compliant balloon dilatation) regardless of the calcification patterns in the coronary lesion, and rotational atherectomy (RA) can be used only as a bailout.
Interventions
Optimal stent expansion by IVUS-guided PCI.
Eligibility Criteria
You may qualify if:
- Patients \>18 years.
- Glomerular filtration rate (GFR) \<60 mL/min/1.73 m2 for 3 months or more
- Stenosis ≥70% in a coronary artery with a diameter ≥2,5 mm.
- Severe angiographic calcification (affecting both sides of the arterial lumen)
- Any clinical scenario except acute myocardial infarction in the first seven days of evolution.
- Native coronary vessel or bypass graft.
You may not qualify if:
- Absence of informed consent.
- Acute myocardial infarction in the first 7 days of evolution.
- Lesion in a single patent vessel.
- Calcified lesions with an angulation \>60º, dissections, lesions with thrombus, and degenerated saphenous vein grafts.
- Hemodynamically unstable patients
- Patients with allergy to iodinated contrast media
- Patients with significant comorbidity and with a life expectancy of less than one year
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
La Paz University Hospital
Madrid, 28046, Spain
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Guillermo Galeote, PhD, MD
La Paz University Hospital
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR INVESTIGATOR
- PI Title
- Principal Investigator
Study Record Dates
First Submitted
April 6, 2022
First Posted
April 29, 2022
Study Start
February 2, 2019
Primary Completion
December 27, 2022
Study Completion
December 4, 2023
Last Updated
April 29, 2022
Record last verified: 2022-04