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KMID : 0368120200500010038
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Korean Circulation Journal
2020 Volume.50 No. 1 p.38 ~ p.49
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Effect of Renal Denervation on Suppression of PVC and QT Prolongation in a Porcine Model of Acute Myocardial Infarction
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Kim Sung-Soo
Kim Hyun-Kuk
Park Hyung-Wook
Jeong Myung-Ho
Lim Kyung-Seob
Kee Hae-Jin
Ryu Yu-Hee
Kim Han-Byul
Na Joo-Young
Ki Young-Jae
Park Keun-Ho
Choi Dong-Hyun
Lee Ki-Hong
Yoon Nam-Sik
Cho Jeong-Gwan
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Abstract
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Background and Objectives: Antiarrhythmic effect of renal denervation (RDN) after acute myocardial infarction (AMI) remains unclear. The goal of this study was to evaluate the effect of RDN on ventricular arrhythmia (VA) after AMI in a porcine model.
Methods: Twenty pigs were randomly divided into 2 groups based on RDN (RDN, n=10; Sham, n=10). After implanting a loop recorder, AMI was induced by occlusion of the middle left anterior descending coronary artery. Catheter-based RDN was performed for each renal artery immediately after creating AMI. Sham procedure used the same method, but a radiofrequency current was not delivered. Electrocardiography was monitored for 1 hour to observe VA. One week later, the animals were euthanized and the loop recorder data were analyzed.
Results: Ventricular fibrillation event rate and the interval from AMI creation to first VA in acute phase were not different between the 2 groups. However, the incidence of premature ventricular complex (PVC) was lower in the RDN than in the Sham. Additionally, RDN inhibited prolongation of the corrected QT (QTc) interval after AMI. The frequency of non-sustained or sustained ventricular tachycardia, arrhythmic death was lower in the RDN group in the early period.
Conclusions: RDN reduced the incidence of PVC, inhibited prolongation of the QTc interval, and reduced VA in the early period following an AMI. These results suggest that RDN might be a therapeutic option in patients with electrical instability after AMI.
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KEYWORD
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Myocardial infarction, Cardiac arrhythmia, Autonomic denervation
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