NCT05732025

Brief Summary

Calcified coronary lesions often run through various complex lesions, which increases the difficulty of coronary intervention, is one of the main challenges faced by interventional cardiovascular physicians. Severely calcified lesions, or severely calcified lesions with twisted, angulated, diffused, significantly increase rates of immediate complications and early and late major adverse cardiovascular events. Correctly identifying and evaluating calcified lesions, and selecting the most appropriate treatment strategy according to the degree of coronary artery calcification are very important for improving the success rate of intervention, reducing complications, and improving the short-term and long-term prognosis of patients.

Trial Health

35
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
12

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started May 2023

Shorter than P25 for not_applicable

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

February 7, 2023

Completed
9 days until next milestone

First Posted

Study publicly available on registry

February 16, 2023

Completed
2 months until next milestone

Study Start

First participant enrolled

May 1, 2023

Completed
5 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

October 1, 2023

Completed
2 months until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2023

Completed
Last Updated

February 16, 2023

Status Verified

July 1, 2022

Enrollment Period

5 months

First QC Date

February 7, 2023

Last Update Submit

February 7, 2023

Conditions

Keywords

Calcified coronary lesionsRotary atherectomyElectrohydraulic shock wave lithotripsyOptical coherence tomography (OCT)

Outcome Measures

Primary Outcomes (1)

  • Stent expansion rate using OCT

    Stent expansion rate=Minimum lumen area in the stent/(distal reference vessel area + proximal reference vessel area)\*1/2

    Immediately after surgery

Secondary Outcomes (8)

  • Angiography success rate

    Immediately after surgery

  • Minimum stent area (MSA) immediately after surgery

    Immediately after surgery

  • Minimum lumen diameter MLD immediately after operation

    Immediately after surgery

  • The diameter of the lumen immediately after operation

    Immediately after surgery

  • Obtained lumen area immediately after operation

    Immediately after surgery

  • +3 more secondary outcomes

Study Arms (2)

Electrohydraulic shock wave lithotripsy

EXPERIMENTAL

Pre-treatment of severe calcified coronary lesions with electrohydraulic shock wave lithotripsy

Device: Electrohydraulic shock wave lithotripsy

Rotary atherectomy

ACTIVE COMPARATOR

Pre-treatment of severe calcified coronary lesions with Rotary atherectomy

Device: Rotary atherectomy

Interventions

Pre-treatment of severe calcified coronary lesions with electrohydraulic shock wave lithotripsy

Electrohydraulic shock wave lithotripsy

Pre-treatment of severe calcified coronary lesions with rotary atherectomy

Rotary atherectomy

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Clinical Criteria:
  • Age ≥ 18 years old
  • Evidence of asymptomatic ischemia, stable or unstable angina
  • Patients who can understand the purpose of the trial, voluntarily participate and sign the informed consent, and are willing to accept angiography, OCT examination and clinical follow-up.
  • Angiographic Criteria:
  • The target lesion is primary and in situ coronary artery lesion
  • The length of the target lesion is ≤60mm, and the diameter of the target lesion is 2.5-4.0mm (visually)
  • The stenosis rate of the target lesion diameter is ≥70%, and the doctor judges that it is necessary to implant a stent (visual inspection method) to meet one of the following:
  • Diameter stenosis ≥ 70%, \< 100%
  • ≥50%, \<70% with evidence of ischemia
  • The lesion allows a 0.014 guidewire to pass
  • Under multi-angle imaging conditions, calcified shadow lesions can be seen on both sides of the lesion vessel wall (the target lesion meets the definition of severe calcification)

You may not qualify if:

  • Clinical Criteria:
  • Acute myocardial infarction occurred within 30 days before operation
  • Use special balloons (chocolate balloons, scored balloons, spinous balloons, etc.) to treat lesions at the same time
  • Troponin is greater than 5 times the upper limit of laboratory normal value within one week before operation
  • Severe cardiac dysfunction (grade III or IV)
  • Left ventricular ejection fraction \<25%
  • The patient refuses emergency CABG surgery or does not have indications for emergency CABG surgery
  • Severe uncontrolled hypertension (systolic blood pressure \>180 mm Hg or diastolic blood pressure \>110 mm Hg)
  • Severe renal failure (serum creatinine \> 221 μmol/L)
  • Preoperative hemoglobin \<100g/L
  • Obvious coagulation dysfunction (platelet count\<100×109/L or INR\>1.7, INR is only required for patients who have taken warfarin orally within 2 weeks before enrollment)
  • Blood hypercoagulability diseases (such as polycythemia vera, platelet count \>750×109/L, etc.)
  • History of stroke or TIA within 3 months
  • History of active peptic ulcer or upper gastrointestinal bleeding within 6 months
  • The life expectancy of the patient is less than 12 months
  • +18 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Officials

  • Jian-an Wang, MD,PhD

    Second Affiliated Hospital of Zhejiang University, School of Medicine

    PRINCIPAL INVESTIGATOR

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

Study Record Dates

First Submitted

February 7, 2023

First Posted

February 16, 2023

Study Start

May 1, 2023

Primary Completion

October 1, 2023

Study Completion

December 1, 2023

Last Updated

February 16, 2023

Record last verified: 2022-07

Data Sharing

IPD Sharing
Will not share