反复发作抑郁症患者前扣带回额叶执行功能的磁源性影像研究

目的 观察反复发作抑郁症患者前扣带回、额叶执行功能在时间空间序列的变化特征.方法 18例反复发作抑郁症患者及21名年龄、性别、受教育年匹配的健康对照入组,利用脑磁图检测受试者在完成Stroop字色干扰测试时前扣带回、额叶功能的实时改变.结果 1.与对照组相比,患者组完成Stroop字色干扰测试时激活增强的脑区依次为(t代表激活强度):(1)100～ 200ms:右前扣带回(t=1.81)、双侧额内侧同(t=l.91,t=1.86)、左额上回(t=1.79)、右额中回(t=1.82)、右额下回(t=1.82)(2)200～300ms:左前扣带回(t=1.82);(3)250 ～350 m:左前扣带同(t=2.67)、左额内侧同(t=2.43)、左额下回(t=1.91);(4)300～400ms:左前扣带回(t=2.26)、双侧额下回(t=1.97,t=2.66)、左额内侧回(t=2.35);(5)350 ～450ms:左前扣带回(t=2.02)、左额内侧回(t=2.00)、双侧额下回(t=1.74,t=1.78);(6)400 ～ 500 ms:左前扣带回(t=2.01)、左额内侧回(t=1.97);2.与对照组相比,患者组完成Stroop字色干扰测试时激活减弱的脑区为:200～300 ms左额中回(t=1.79)、左额上回(t=1.76).结论 反复发作抑郁症患者前扣带回、额叶脑区存在时间和空间序列双层次的激活紊乱.     

抑郁症患者脑抑制功能的磁源性影像学研究

目的 利用磁源性影像(Magnetic source imaging,MSI)技术观察复发单相抑郁症患者在完成Stroop字色干扰测试任务时脑抑制功能的实时变化.方法 利用脑磁图检测23例复发单相抑郁症患者及20名年龄、性别、受教育年限近似匹配的健康对照者完成Stronp字色干扰测试任务时脑抑制功能的改变.结果 与正常对照组相比.患者组完成Stroop字色干扰测试任务时,依次激活增强的区域有双侧丘脑(t=2.46,t=2.92)、右颞梭状回(t=1.81)、右颞中回(t=1.76)、右额下回(t=2.28)、左前扣带回(t=2.00)、左尾状核头(t=1.81)、中央前回(t=2.17)、右海马(t=2.04)、左颞上回(t=2.47);依次激活减弱的脑区有右额上回(t=1.76)、双侧额中回(t=1.95,t=2.09)、右枕楔叶(t=1.97)、扣带回(t=1.70,t=2.08)、中央后回(t=2.57,t=2.65)、左缘上回(t:2.16)、左豆状核壳核(t=2.39)、双侧颞中回(t=2.22,t=1.90)、左脑岛(t=1.81)、左颞上回(t=1.90)、右顶叶(t=3.26)等.结论 结果提示抑郁症患者完成Streop字色干扰测试任务时参与抑制功能的脑区功能较正常人存在异常,对字色的干扰信息的抑制能力减弱.

Abstract：

Objective To investigate the variation of brain inhibitory function of depressed patients during the processes of the Stroop color-word interference task with the Magnetic source imaging ( MSI) technology. Methods Twenty-three depressed patients and twenty age-,gender- and education- matched healthy controls were involved in the Stroop word-color interference test to detect the variation of brain inhibitory function by magnetoen-cephaloraphy scanning. Results Compared with the healthy controls,the abnormal activities in depressed patients during different time periods were separately as follows: increased activation in the bilateral thalamus( t = 2.46, t = 2.92 ) ,the right temple fusiform gyrus ( t = 1. 81) , the right middle temporal gyrus ( t = 1. 76) , the right inferior frontal gyrus( t = 2.28) , the left anterior cingulate( t = 2.00) , the left caudate head( t=1.81) ,the precentral gy-rus( t = 2.17) ,the right parahippocampal gyrus( t = 2.04) ,the left superior temporal gyrus(t = 2.47) ; decreased activation in the right superior temporal gyrus( t=1.76) ,the bilateral middle frontal gyrus(t=1.95, t = 2.09), the right cuneus( t=1.97) ,the cingulate gyrus( t=1.70, t = 2.08) ,the postcentral gyrus( t = 2.57, t = 2.65) , the left supramarginal gyrus( t = 2. 16) ,the left lentiform nucleus putamen( t = 2.39) ,the bilateral middle temporal gyrus (t = 2.22, t= 1.90) ,the left insula( t= 1. 81) ,the left superior temporal gyrus( t= 1.90) ,the right parietal lobe( t= 3.26). Conclusion The abnormal activation inefficiency in the brain regions related with inhibition function is reflected in depressed patients,and the ability against interference information declines.     

帕金森病伴疼痛患者接触性热痛刺激诱发的脑功能磁共振成像研究

目的:观察帕金森病伴疼痛患者(PDP)与帕金森病不伴疼痛患者(nPDP)在接触性热痛刺激(CHS)下的脑功能磁共振成像(fMRI)特点,探索PDP痛觉相关脑网络,为PD疼痛的病理生理机制、临床分型及治疗等提供参考.方法:收集11例PDP(PDP组)与15例nPDP(nPDP组),同期招募17名性别、年龄匹配的健康成年人为对照组(NC组).所有受试者均接受临床量表评估,右侧前臂背侧行51℃CHS同步fMRI扫描,观察三组间脑区激活差异.结果:与nPDP组相比,PDP组右小脑、右海马旁回、右舌回、右背外侧额上回、右眶部额上回脑区激活程度增强,双侧颞下回、双侧脑岛、左中央沟盖、左顶上回、左顶下缘角回脑区激活程度减弱(P<0.05).与NC组相比,PDP组双侧小脑、双侧中央前回、左颞下回、左中央后回、右海马旁回、右海马、右舌回、左丘脑、左颞上回、右脑岛、右中央沟盖、左颞上回、左补充运动区、右梭状回脑区激活程度增强(P<0.05),未见激活降低的脑区.与NC组相比,nPDP组双侧小脑、双侧中央沟盖、双侧梭状回、双侧脑岛、左顶下缘角回、右颞下回、右海马旁回、左丘脑、左颞上回、左中央前回、左中央后回、右海马、左补充运动区、左颞横回、左顶上回脑区激活程度增强(P<0.05),未见激活降低的脑区.结论:多个脑区共同参与痛觉形成及处理,存在复杂的痛觉相关脑网络.CHS-fMRI可为PD患者痛觉相关脑功能研究提供客观手段,PDP痛觉相关脑网络发生改变,对PDP疼痛的病理生理机制研究有一定价值,可能有助于为PD患者临床分型、疗效评定提供参考信息.     

首发与复发抑郁症患者识别悲伤面部表情的脑功能差异研究

目的 探讨首发和复发抑郁症患者识别悲伤面部表情时脑区功能的差异.方法 首发、复发重性抑郁症患者各11例,以及性别、年龄、受教育年限与患者匹配的健康对照11例入组,利用功能核磁共振成像检测受试者在识别悲伤及中性面部表情视频时的激活脑区.结果 与正常对照组相比,首发抑郁症患者识别悲伤面部表情(识别悲伤面部表情-识别中性面部表情)时活动增加的脑区有右楔叶、右梭状回、双侧额中回、左颞中回、左海马旁回(K值≥10,P<0.001),而活动降低的脑区有右颞上回、右海马旁回(K值≥10,P<0.001),复发抑郁症患者活动降低的脑区有右额下回、右颞上回(K值≥10,P<0.001),未发现活动增加的脑区;与首发抑郁症患者相比,复发抑郁症患者活动降低的脑区有右额中回、右颞上回、右中央前回、右丘脑、右屏状核(K值≥10,P<0.001),活动增高的脑区有右海马旁回、右屏状核、右岛叶(K值≥10,P<0.001).结论 抑郁症患者特别是首发抑郁症患者悲伤面部表情识别的神经基础与正常人存在差异,表现为更多的脑区参与情绪刺激的识别;复发抑郁症患者与首发抑郁症患者悲伤面部表情识别的神经基础也存在差异,表现为更多情绪识别相关脑区功能下降.     

注意缺陷多动障碍儿童静息功能磁共振低频振幅成像与症状评分相关研究

目的 运用功能磁共振(fMRI)静息态低频振幅(ALFF)方法 比较注意缺陷多动障碍(ADHD)儿童静息脑活动与正常儿童的差别;结合症状评分量表探讨ADHD症状严重程度与静息自发脑活动是否存在相关性.方法 学龄期ADHD32例,年龄及受教育程度匹配的正常儿童30名,分别采集两组儿童的静息状态fMRI脑血氧水平依赖(BOLD)信号,ALFF处理两组BOLD图像,进行双样本t检验获取显著性激活脑区图(P＜0.01).对ADHD组每个儿童症状评分量表(RS-Ⅳ)总分与提取的相应显著性脑区ALFF值进行相关分析获得相关显著脑区.结果 ADHD与正常组比较,ALFF值减低脑区:右额上回(BA9,t=-4.61),左额上回内侧(BA10,t=-3.63),左额中回(BA46,t=-4.09)及左前扣带回(BA24,t =-4.02).ALFF值增加脑区:左眶额叶内侧(BA11,t=3.52),右楔叶(t=3.93),右枕中回(BA19,t=3.82),右侧小脑(BA37,t=3.77),右颞中回(BA37,t=3.76),左旁中央小叶(BA6,t=3.77).ADHD组ALFF与RS-Ⅳ总分相关显著脑区:左额上回内侧(P=0.009,r=0.492),右楔叶(P=0.024,r=0.433).结论 静息状态下ADHD的前额叶自发活动水平低下,某些功能相关脑区活动增强可作为补偿机制;左额叶及右楔叶的静息自发活动水平与ADHD症状严重程度呈正相关.     

青年重性抑郁症患者弥散张量和静息 状态下的功能磁共振成像

目的：利用弥散张量成像（diffusion tensor imaging, DTI）和静息状态下功能磁共振成像（functional magnetic resonance imaging, fMRI) 技术,探讨抑郁症可能的病因和发病机制。方法：对16例青年重性抑郁症患者（抑郁症组）和16例性别年龄及受教育程度匹配的自愿者（对照组）进行DTI和静息状态fMRI研究,采用基于体素法（voxel-based method, VBA）分析全脑的分数各向异性 (fractional anisotropy, FA),局部一致性（regional homogeneity, ReHo）法处理fMRI数据,并进行两组比较。结果：抑郁症患者双侧额中回、双侧中央前回、左颞上回、右颞中回、左梭状回、右枕颞外侧回、左角回、左岛叶、左小脑后叶的FA值较对照组低（P＜0.01）。抑郁症患者双侧额上回、双侧额中回、双侧额叶内侧回、双侧中央旁小叶、双侧中央后回、右顶下小叶、右楔状叶、左枕中回、左语言中枢、左颞上回、右颞中回、右扣带回及右壳核ReHo值较对照组明显降低（P＜0.01）。结论：青年重性抑郁症患者存在广泛的脑白质微观结构损害和脑功能异常,多个脑区及它们之间的结构和功能连接失常可能是抑郁症发病的重要因素之一。     

抑郁症识别正性情绪的脑磁源性影像动态变化

目的 利用磁源性影像(Magnetic source imaging,MSI)技术观察抑郁症患者识别正性动态情绪的神经网络动态变化的特点.方法 利用脑磁图检测12例抑郁症患者及12名年龄、性别、受教育年限近似匹配的健康对照者识别正性动态情绪视频时的脑部反应.结果 与正常对照组相比,抑郁症组识别正性面部情绪时,活动减弱的脑区依次主要为右顶下小叶(t=3.94)、右缘上回(t=3.59)、双侧后扣带回(t=5.04,t=4.85)、左楔前叶(t=3.84)、左颞上回(t=3.58)等;活动增强的脑区依次主要为双侧海马回(t=2.13,t=2.56)、左侧杏仁核(t=2.41)、双侧钩回(t=2.33,t=2.44)、右前扣带回(t=2.15)、左梭状回(t=3.33)等.这些脑区在不同时间段有相应脑区激活异常.设P<0.05时,均差异具有显著性.结论 抑郁症患者的颞内侧皮质、顶叶功能减弱及边缘系统等功能增强与正性情绪识别功能减弱有关,其脑磁源性影像变化特征较正常人有很显著的差异.     

轻度认知障碍病人情景记忆与脑静息态功能连接关系

目的观察轻度认知障碍(MCI)病人情景记忆(EM)编码、提取与其脑静息态功能连接网络变化的关系。方法 MCI组24例,正常对照(NC)组24例,采用GE 3.0T MRI采集静息态脑血氧水平依赖信号,然后行EM编码、提取测试。EM编码和提取成绩与相应功能连接网络进行相关分析。结果与NC组比较,MCI组与后扣带回连接明显减弱脑区:胼胝体、左侧舌回、左侧额叶亚区、右侧颞中回、右侧颞上回、右侧舌回及左侧颞中回(t=-4.84～-3.73,P<0.05);连接增强脑区:小脑后叶、右侧颞下回、右侧额中回、左侧枕中回、左侧中央前回、左侧颞上回、右侧中央前回(t=3.49～4.72,P<0.05)。MCI组EM编码、提取成绩均明显低于NC组,差异均有显著性(t=4.60、3.53,P<0.05)。MCI组与EM编码呈显著正相关脑区为右侧颞上回(r=0.66,P<0.05);NC组无相关脑区。MCI组与EM提取呈显著正相关的脑区为右侧楔前叶(r=0.71,P<0.05),NC组为左侧眶部额中额下回(r=0.68,P<0.05)。结论 MCI病人双侧颞中回、右侧颞上回、双侧舌回与后扣带回功能连接显著减弱;小脑后叶、左侧颞上回、右侧颞下回、左侧枕中回、双侧中央前回、右侧额中回与PCC的功能连接增强。MCI病人EM编码、提取功能存在明显障碍,其中编码功能障碍与其右侧颞上回功能网络连接减弱密切相关。     

双相情感障碍患者抑郁发作期、缓解期静息态fMRI特点对比

目的比较双相情感障碍(bipolar disorder,BD)患者抑郁发作期、缓解期fMRI特点。方法 以2018年3月～2021年3月89例BD抑郁患者为研究对象,根据发病时期不同分为发作期组及缓解期组,并以临床招募志愿者30例为对照组,均给予静息态fMRI检查。应用DPARSF软件分析fMRI数据,并计算全脑的ReHo值、ALFF值,比较三组间的差异。结果 发作期组较对照组在右额内侧回、右颞上回、左顶下小叶、左脑岛、左丘脑、右小脑右叶ReHo增强,在右眶部额上回、右前扣带回、后扣带回、右项下小叶ReHo降低(P<0.05);发作期左额上回、右额上回、左顶下小叶、左丘脑、左小脑后叶ALFF增强,右舌回、右海马旁回、右颞中回、右项下小叶、右中央后回ALFF降低(P<0.05);缓解期组较对照组在右颞中回ReHo增强,右顶下小叶、楔前叶ReHo降低(P<0.05);缓解期较对照组在右额内侧回、左顶下小叶、左小脑后叶ALFF增强,右楔叶、右顶下小叶、右额中回ALFF降低(P<0.05);发作期组较缓解期组右颞上回、右颞下回、左颞中回、左额下回、左顶下小叶、左脑岛Re...     

动态面部表情情绪不明确识别的fMRI研究

目的 利用事件相关设计的功能核磁共振(fMRI)成像技术及性别识别实验范式,探讨面部表情情绪不明确识别的神经基础.方法 利用1.5T功能核磁共振成像系统检测26名健康女性受试者识别视频形式的悲伤、喜悦及中性面孔性别时的脑部反应.图像数据经SPM2软件处理和统计分析,获得脑区激活图.结果 与动态中性表情性别识别相比,动态喜悦表情性别识别激活右颞下回(BA37,26像素)及右颞中回(BA22,81像素)等脑区,而动态悲伤表情性别识别激活双侧额中回(BA10/6,37/23像素)、左扣带回(BA31,22像素)、右海马旁回(BA28,27像素)、右楔前叶(BA31,18像素)、右顶下小叶(BA40,22像素)、左顶上小叶(BA7,27像素)、左尾状核、左豆状核、左丘脑、双侧颞中回(BA21/22,238/56像素)等脑区(Z＞3.34;P＜0.001).结论 动态悲伤表情情绪不明确识别可能由一个包括额顶皮质和皮质下(如基底节、丘脑、边缘系统)等脑区的分布式神经网络所调控,而动态喜悦表情情绪不明确加工仅仅激活一些与面孔运动有关的脑区.     

Value of D-Dimers in patients with acute aortic dissection

Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P ＜ 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (＞0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P ＜0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P ＜ 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.     

Research of combined liver-kidney transplantation model in rats

Objective： To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods： SD rats served as both donors and recipients. 4℃ sodium lactate Ringer＇s was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava （IVC） inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results： Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion： This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.     

APPLICATION OF LORNOXICAM TO PATIENT-CONTROLLED ANALGESIA IN PATIENTS UNDERGOING ABDOMINAL SURGERIES

FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P＜ 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P＜ 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.     

Acupuncture Combined with Spinal Tui Na for Treatment of Primary Dysmenorrhea in 30 Cases

Objective: To observe the therapeutic effects in acupunture treatment of primary dysmenorrhea combined with spinal Tui Na, and study its mechanism. Methods: Thirty cases of the treatment group were treated by acupuncture combined with spinal Tui Na, and thirty cases in the control group were treated by routine acupuncture. Results: The total effective rate was 93.3% in the treatment group, and 73.3% in the control group, with a significant difference between the two groups (P<0.05). Conclusions: Acupuncture combined with spinal Tui Na has good prospects for treatment of primary dysmenorrhea.     

Luo Lingjie's Experience in Treating Chronic Nephropathy

In treating chronic nephropathy,Luo Lingjie,a chief physician,pays attention to regulating the balance between yin and yang,treating infection if present,and removing pathogenic factors.He prescribes gentle drugs and uses carefully strongly warming-tonifying ones,emphasizes the importance of persuading the patient to persist in treatment with medication and nurse one's health for recuperation,and is good at combined use of TCM and western medicine therapy and brings the merits of various therapies into full play,with obvious theraoeutic effects.     

Dr.Zhang Ren's Experience in the Acupuncture Treatment of Different Diseases with the Same Therapeutic Principle

Dr.Zhang Ren,the chief physician,is the chairman of Shanghai Acupuncture and Moxibustion Association.Having been engaged in medicine for about 40 years,he is experienced in treating various intractable diseases.In his long years of clinical practice,he advocates taking the TCM differentiation as the basis to seek for the acupuncture method for treatment of modern intractable diseases.The author of this essay had the fortune to follow Dr.Zhang in study.The following is a summary of Dr.Zhang's experience in the acupuncture treatment for different intractable diseases with the same therapeutic principle.     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

目的：评价使用安心颗粒对急诊经皮冠状动脉介入术（PPCI）术后生活质量的影响.方法：将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组（术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次）和对照组（仅接受基础药物治疗）.所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表（MIDAS）、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果：入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异（P＞0.05）;出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低（P＜0.05）;组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低（P＜0.05）.两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血（P＞0.05）.两组发生轻度血小板减少症的患者数比较无差异（P＞0.05）.结论：PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P＜0.01);the MAP decreased(P＜0.01)and the HR increased drastically(P＜0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.