Short-term Safety and Efficiency of Cryoablation for Renal Sympathetic Denervation in a Swine Model

Short-term Safety and Efficiency of Cryoablation for Renal Sympathetic Denervation in a Swine

Model

Meng Ji;Li Shen;Yi-Zhe Wu;Zhi-Feng Yao;Jia-Sheng Yin;Jia-Hui Chen;Jian-Guo Jia

¡¾ÆÚ¿¯Ãû³Æ¡¿¡¶ÖлªÒ½Ñ§ÔÓÖ¾£¨Ó¢Îİ棩¡· ¡¾Äê(¾í),ÆÚ¡¿2015(128)006

¡¾ÕªÒª¡¿Background:Renal sympathetic nerves are involved in the reflective activation of the sympathetic nervous system in circulatory control.Catheter-based renal denervation (RDN) ameliorated treatment-resistant hypertension safely,but 10£¥-20£¥ of treated patients are nonresponders to radiofrequency denervation.The purpose of this study was to investigate the safety and efficiency of cryoablation for sympathetic denervation in a swine model and to explore a new way of RDN.Methods:Seven swines randomly assigned to two groups:Renal cryoablation (CR) group and control group.The control group underwent renal angiogram only.The CR group underwent renal angiogram plus bilateral renal cryoablation.Renal angiograms via femoral were performed before denervation,after denervation and prior to the sacrifice to access the diameter of renal arterial and the pressure of aorta abdominalis.Euthanasia of the swine was performed on 28-day to access norepinephrine (NE) changes of the renal cortex and the changes of renal nerves.Results:Cryoablation did not induce severe

complications at any time point.There was no significant change in diameter of renal artery.CR reduced systolic blood pressure (BP) from 145.50 ¡À 9.95 mmHg at baseline to 119.00 ¡À 14.09 mmHg.There was a slight but insignificant decrease in diastolic BP.The main nerve changes at 28-day consisted of necrosis with perineurial fibrosis at the site of CR exposure in conjunction with the nerve vacuolation.Compared with the control

group,renal

tissue

NE

of

CR

group

decreased

by

89.85£¥.Conclusions:Percutaneous catheter-based cryoablation of the renal artery is safe.CR could effectively reduce NE storing in the renal cortex,and the efficiency could be maintained 28-day at least. ¡¾×ÜÒ³Êý¡¿5Ò³(790-794) ¡¾¹Ø¼ü´Ê¡¿

¡¾×÷Õß¡¿Meng Ji;Li Shen;Yi-Zhe Wu;Zhi-Feng Yao;Jia-Sheng Yin;Jia-Hui Chen;Jian-Guo Jia

¡¾×÷Õßµ¥Î»¡¿Institutes of Biomedical Science, Fudan University, Shanghai 200032, China;Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai 200032, China;Department of Cardiology, Zhongshan

Hospital,

Fudan

University,

Shanghai

200032,

China;Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai 200032, China;Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai 200032, China;Department of Cardiology, Zhongshan

Hospital,

Fudan

University,

Shanghai

200032,

China;Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai 200032, China ¡¾ÕýÎÄÓïÖÖ¡¿Ó¢ÎÄ ¡¾ÖÐͼ·ÖÀà¡¿ ¡¾ÎÄÏ×À´Ô´¡¿

https://www.zhangqiaokeyan.com/academic-journal-cn_chinese-medical-journal_thesis/0201254289133.html ¡¾Ïà¹ØÎÄÏס¿

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