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机构地区:[1]武汉大学人民医院心内科,武汉大学心血管病研究所,心血管病湖北省重点实验室,湖北武汉430060
出 处:《中国心脏起搏与心电生理杂志》2017年第5期448-451,共4页Chinese Journal of Cardiac Pacing and Electrophysiology
基 金:国家自然科学基金(项目编号:81530011,81570463,81600395);湖北省自然科学基金(项目编号:2016CFA065,2016CFA048,2016CFB621)
摘 要:目的探讨高频刺激不同节段肾交感神经对右前心房自主神经节(ARGP)和右侧星状神经节(RSG)活性的影响。方法 18只成年犬随机分为肾动脉近端刺激组(n=6)、远端刺激组(n=6)和假刺激组(n=6)。在X线影像指导下,将3F刺激电极导管分别送至肾动脉的相应节段行高频电刺激或假刺激。分别在基础状态和高频刺激时测定心率、动脉血压、以及ARGP和RSG的放电频率和振幅。结果近端刺激组的犬在高频刺激时心率增加[(145±7)次/分vs(140±6)次/分,P<0.05]、动脉血压升高[(128±7)/(88±8)mmHg vs(115±5)/(78±6)mmHg,P<0.05],以及ARGP和RSG的放电频率[ARGP:(90±8)次/分vs(51±8)次/分;RSG:(64±13)次/分vs(31±8)次/分,P<0.05]和放电振幅[ARGP:(0.80±0.09)mV vs(0.47±0.06)mV;RSG:(0.65±0.07)mV vs(0.39±0.07)mV,P<0.05]也显著性增加;而远端刺激组和假刺激组的以上指标均无显著性改变(P>0.05)。结论肾动脉近端的交感神经对心脏自主神经系统影响最为显著。Objective To investigate the effects of different segment of renal sympathetic nerve stimulation on the neural activity of anterior right ganglinated plexi (ARGP) and right stellate ganglion (RSG). Methods Eighteen adult dogs were randomly divided into proximal stimulation group, distal stimulation group, and sham stimulation group (n = 6 for each group). A stimulation electrode was inserted into different segment of renal artery under fluo- roscopy for high frequency stimulation or sham stimulation. The heart rate, blood pressure, and the neural activity of ARGP and RSG were measured at baseline and during high frequency stimulation. Results Canines in the prox- imal stimulation group were associated with increased heart rate [ (145±7) bpm vs (140± 6) bpm, P 〈0.05], sys- tolic and diastolic blood pressure [(128±7)/(88±8) mmHg vs (115±5)/(78±6) mmHg, P〈0.05], and the neural activity of ARGP [-Amplitude: (0.80-±0.09) mV vs (0.47-±0.06) mV; Frequency: (90±8) impulses/rain vs (51±8) impulses/rain, P〈0.05] and RSG [Amplitude: (0.65±0.07) mV vs (0.39±0.07) mV; Frequency: (64 ±13) impulses/rain vs(3±8)impu[ses/min, P〈0.05] during high frequency stimulation. While these parameters were not significantly changed in distal stimulation group or sham stimulation group (P〉0.05). Conclusions Proximal renal sympathetic nerves play the most important role in the modulation of cardiac autonomic nervous system.
关 键 词:心血管病学 肾交感神经 右前神经节丛 右侧星状神经节 自主神经系统
分 类 号:R331.38[医药卫生—人体生理学]
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