Related Experiment Videos
Intraluminal milrinone for dilation of the radial artery graft
R García-Rinaldi1, E R Soltero, J Carballido
1The San Juan Group and the Department of Cardiovascular Surgery, Pavía Heart Institute, Puerto Rico 00910, USA.
Abstract:
There is renewed interest in the use of the radial artery as a conduit for coronary artery bypass surgery. The radial artery is, however, a very muscular artery, prone to vasospasm. Milrinone, a potent vasodilator, has demonstrated vasodilatory properties superior to those of papaverine. In this report, we describe our technique of radial artery harvesting and the adjunctive use of intraluminal milrinone as a vasodilator in the preparation of this conduit for coronary artery bypass grafting. We have used these techniques in 25 patients who have undergone coronary artery bypass grafting using the radial artery. No hand ischemic complications have been observed in this group. Intraluminal milrinone appears to dilate and relax the radial artery, rendering this large conduit spasm free and very easy to use. We recommend the skeletonization technique for radial artery harvesting and the use of intraluminal milrinone as a radial artery vasodilator in routine myocardial revascularization.
Insights
Radial artery grafts are useful for coronary artery bypass surgery. Using intraluminal milrinone (a vasodilator) prevents radial artery vasospasm, making grafts easy to use without complications.
Area of Science:
- Cardiovascular Surgery
- Vascular Biology
Background:
- Renewed interest exists in using the radial artery as a conduit for coronary artery bypass grafting (CABG).
- The radial artery's muscular nature predisposes it to vasospasm, potentially complicating its use.
- Milrinone is a potent vasodilator with superior properties compared to papaverine.
Purpose of the Study:
- To describe a technique for radial artery harvesting.
- To evaluate the adjunctive use of intraluminal milrinone in preparing the radial artery conduit for CABG.
- To assess the safety and efficacy of this method in preventing vasospasm.
Main Methods:
- Radial artery harvesting using a skeletonization technique.
- Administration of intraluminal milrinone to the harvested radial artery.
- Coronary artery bypass grafting in 25 patients utilizing the prepared radial artery conduit.
Main Results:
- The technique was successfully applied in 25 CABG patients.
- No instances of hand ischemic complications were observed in the patient cohort.
- Intraluminal milrinone effectively dilated and relaxed the radial artery, preventing spasm and facilitating graft use.
Conclusions:
- The described technique, including skeletonization and intraluminal milrinone, is effective for radial artery harvesting and preparation.
- Intraluminal milrinone is a safe and effective vasodilator for preventing radial artery vasospasm in CABG.
- This approach is recommended for routine myocardial revascularization procedures using radial artery grafts.