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Antispasmodic agents for radial artery conduit.


- candidate number14778
- NTR NumberNTR3966
- ISRCTNISRCTN wordt niet meer aangevraagd.
- Date ISRCTN created
- date ISRCTN requested
- Date Registered NTR19-apr-2013
- Secondary IDsHIO2013 
- Public TitleAntispasmodic agents for radial artery conduit.
- Scientific TitleAntispasmodic agents for radial artery conduit.
- ACRONYMAntispasm Radial
- hypothesisOur hypothesis is that using nicardipine instead of verapamil in the vasodilation solution would increase the free flow.
- Healt Condition(s) or Problem(s) studiedCoronary Artery Bypass Grafting (CABG)
- Inclusion criteriaPatients undergoing isolated or combined CABG whereby the radial artery is used as a conduit with or without the use of other conduits.
- Exclusion criteriaEmergency Operation.
- mec approval receivedno
- multicenter trialno
- randomisedyes
- masking/blindingNone
- controlActive
- groupParallel
- Type2 or more arms, randomized
- Studytypeintervention
- planned startdate 1-jun-2013
- planned closingdate1-jun-2014
- Target number of participants40
- InterventionsThis is a prospective randomized non-blinded study containing two groups of patients. In one group, the radial artery will be treated topically with the solution used in our daily practice which contains verapamil. In the other group, the same solution is used after replacing verapamil with nicardipine. Topical application of either solutions takes place only after harvesting the radial artery and before performing the anastomoses. After measuring the flow manually, the surgeon may use the radial artery conduit in his own manner for performing the anastomoses.
- Primary outcomeComparison between verapamil and nicardipine in preventing spasm and increasing direct free flow through the radial artery conduit.
- Secondary outcomeEffect of the two drugs on the incidence of perioperative ischemia and infarction.
- TimepointsN/A
- Trial web siteN/A
- statusplanned
- CONTACT FOR PUBLIC QUERIESDr. I. Ozdemir
- CONTACT for SCIENTIFIC QUERIESDr. I. Ozdemir
- Sponsor/Initiator
- Funding
(Source(s) of Monetary or Material Support)
- PublicationsN/A
- Brief summaryRationale:
The use of local application of vasodilators such as calcium channel blockers and/or nitroglycerines leads to possible improvement of the blood flow via the radial artery conduit by avoiding perioperative spasm in comparison with the local application of saline solution.

Objective:
The main objective of the study is to investigate if the local application of vasodilators would improve the immediate flow through the prepared radial artery conduit.

Study design:
A prospective randomized non-blind mono-centre study.

Study population:
Patients who are scheduled for undergoing coronary artery bypass surgery with the use of the radial artery with or without other conduits.

Intervention:
After harvesting the radial artery and before performing the anastomoses, topical application of two different vasodilator solutions will be performed. One solution is being used in the standard practice of our department and contains 10 mg verapamil. In the other solution, verapamil is replaced by nicardipine (10 mg).

Main study parameters/endpoints:
The main endpoint of the study is the mean amount of free flow through the radial artery conduit. This is measured directly after harvesting the radial artery by allowing a free flow of both solution through the conduit into an empty bowl. The mean amount of the solution (in ml) collected in one minute is calculated. This is considered as the mean free flow (ml/min) through the conduit. Nature and extent of the burden and risks associated with participation: No risk is expected for patients who participate in this study. A possible benefit for the patients is the better antispastic action of nicardipine and therefore less incidence of perioperative ischemia.
- Main changes (audit trail)
- RECORD19-apr-2013 - 6-mei-2013


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