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Clinical Trial Details — Status: Not yet recruiting

Administrative data

NCT number NCT06179329
Other study ID # 5723/23/125
Secondary ID
Status Not yet recruiting
Phase N/A
First received
Last updated
Start date January 1, 2024
Est. completion date July 1, 2025

Study information

Verified date December 2023
Source University of Sao Paulo General Hospital
Contact Omar A V Mejia, MD, PhD
Phone +551126615014
Email omarvmejia@incor.usp.br
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The use of a graft from the left internal thoracic artery to the left anterior descending artery has become the gold standard for the indication of coronary artery bypass grafting. However, choosing a graft for the second-best coronary artery, focusing on long-term patency, is still a challenge. The saphenous vein using the "no-touch" technique is an alternative to a radial artery graft, but there is little evidence, especially in women. This randomized clinical study aims to compare the patency of these grafts in the second-best coronary artery in women undergoing coronary artery bypass grafting.


Recruitment information / eligibility

Status Not yet recruiting
Enrollment 150
Est. completion date July 1, 2025
Est. primary completion date January 1, 2025
Accepts healthy volunteers No
Gender Female
Age group 18 Years to 70 Years
Eligibility Inclusion Criteria: Women aged 18 years or older and younger than 70 years, undergoing isolated and primary myocardial revascularization surgery, with triarterial coronary artery disease (three vessels involved) in vessels subject to surgical revascularization and left ventricular ejection fraction greater than 35%. The target coronary vessels of the study will be those in the territory of the left circumflex artery and the right coronary artery, which must have at least 1.5 mm in diameter, and with proximal obstructive lesions of at least 70%. Exclusion Criteria: 1. Preoperative conditions: 1. Lack of the patient's written informed consent. 2. Presence of poorly controlled diabetes, with a glycated hemoglobin value >7 mg/dl. 3. Emergency or salvage surgery, where the intervention needs to be performed quickly due to the critical clinical condition of the patient. 4. Renal failure with glomerular filtration rate (creatinine clearance) <30 mL/min. 2. Inability to use the saphenous and/or radial vein 1. Positive Allen test using a pulse oximeter 2. Presence of abnormal flow detected by means of a Doppler exam in one of the grafts to be used. 3. History of vasculitis or Raynaud's syndrome, varicose veins, or history of previous saphenous vein removal 3. Conditions that may affect patient follow-up 1. Presence of advanced peripheral arterial disease 2. Known contrast allergy: Presence of a documented allergy to the contrast agent used in radiological procedures. 3. Impossibility of tracking due to geographic inaccessibility. 4. Patients with lack of adherence to guidelines and/or prescribed medications.

Study Design


Related Conditions & MeSH terms


Intervention

Procedure:
Coronary artery bypass graft
Randomization will be performed for stratification according to the target coronary arteries and the randomly determined block size from 4 to 6. The randomization result will be delivered in a sealed envelope in the operating room (before the time out) for one of the two drawn strategies.

Locations

Country Name City State
Brazil Instituto do Coração do Hospital das Clínicas da Faculdade de Medicina de São Paulo São Paulo

Sponsors (6)

Lead Sponsor Collaborator
University of Sao Paulo General Hospital Hospital do Coração Alagoano Prof. Adib Jatene, Hospital do Coração de Messejana, Hospital Regional São Paulo, Hospital Unimed João Pessoa, Instituto Nacional de Cardiologia

Country where clinical trial is conducted

Brazil, 

Outcome

Type Measure Description Time frame Safety issue
Primary One Follow-up with angiography The primary endpoint will be the proportion of saphenous vein and radial artery grafts that were completely occluded on follow-up angiography One year after surgery
Secondary Evaluate in-hospital clinical outcomes 30 days after CABG Death from any cause, perioperative myocardial infarction (occurring between 0 and 30 days), late myocardial infarction (occurring between 31 days and 1 year), reoperation of surgical revascularization and/or coronary angioplasty.
Hand claudication and thenar paresthesia, complications potentially related to radial artery extraction, will be reported according to the specific diagnoses and confirmed with a consulting neurologist. As all patients will receive a radial artery graft, clinical events will be reported for the entire study population.
Thirty days after surgery
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