Nonlinear analysis of heart rate variability during Qi therapy (external Qigong)

Heart rate variability (HRV) was compared in 30 subjects receiving external Qi therapy (EQT) or placebo control therapy, in a crossover design experiment. Subjects who received the EQT reported more pleasant and calm emotions than did the placebo group. Qi therapy reduced the heart rate and increased HRV as indicated by a reduced low frequency/high frequency power ratio of HRV. With nonlinear analysis, the Poincaré plot index of HRV and approximate entropy was greater in the EQT group than in the control group. These findings suggest that EQT stabilizes the sympathovagal function and cardiac autonomic nervous system by inducing more positive emotions than the placebo therapy. In conclusion, EQT may act by stabilizing both the autonomic nervous system and the emotional state.     

冠心病痰热证患者心率变异性分析

目的 通过对痰热证冠心病患者的心率变异性(HRV)进行分析,探讨此证型患者的心脏自主神经功能改变特点及临床意义.方法收集经冠状动脉造影或明确心肌梗死病史等确诊为冠心病的患者79例,辨证为痰热证组30例,血瘀证组30例,2组均进行动态心电图检查,分析HRV时域参数.结果 痰热证组HRV时域参数明显低于血瘀证组(P＜0.01).痰热证组HRV参数SDNN在不同降低程度(SDNN≤50 ms、100 ms＞SDNN＞50 ms)的发生率明显高于血瘀证组(P＜0.01).结论 冠心病痰热证患者HRV时域指标降低明显,提示自主神经损害严重,预示心血管事件中猝死风险增加.     

针刺神门穴与非穴对心率及心率变异性影响的比较研究

目的:运用Actiheart心电记录仪的短程记录,分析神门穴和非穴针刺对心率和心率变异性影响的差异,从而初步探讨神门穴的特异性。方法:60例健康受试者,为神门组和非穴组,分别针刺左侧神门穴和非穴,用Actiheart心电记录仪记录两穴针刺前10min,留针时10min和出针后10min的心率和心率变异性指标;采用SPSS13.0统计软件分析比较针刺神门穴和非穴对心率和心率变异性影响的差异。结果:(1)与针刺前比较,神门穴针刺留针时和出针后BPM下降幅度大(P均<0.01),出针后LF/HF升高幅度大(P<0.05);非穴组出针后lnHF明显增大,留针时和出针后HRV三角指数明显增大(P<0.01～0.05);(2)与留针时比较,2组出针后BPM上升幅度大(P均<0.01),神门穴针刺出针后lnHF降低幅度大,LF/HF升高幅度大(P均<0.01)。(3)与非穴组比较,神门穴针刺留针时BPM下降幅度大(P<0.01),RMSSD、lnLF上升幅度大(P<0.05);HRV三角指数两组在针刺前和出针后均有差异(P<0.05)。结论:本研究通过分析针刺神门穴与非穴对心率和心率变异性影响的差异,初步肯定了针刺神门穴可...     

卡维地洛对急性心肌梗死病人QT、JT离散度及心率变异性的影响

目的 研究卡维地洛对急性心肌梗死病人QT、JT离散度及心率变异性的影响.方法将115例急性心肌梗死病人随机分为卡维地洛组（65例）与对照组（50例）,两组均予常规治疗,卡维地洛组加用卡维地洛12.5 mg,2次/日,疗程4个月,并随访至半年.检测两组治疗前后QT离散度、JT离散度、心率变异性变化,并记录半年内的不良心血管事件发生情况.结果 经过4个月的治疗,两组QT离散度、JT离散度、心率变异性的时域及频域指标较治疗前均明显改善（P＆lt;0.01）,但卡维地洛组更为明显（P＆lt;0.01）.卡维地洛组半年内不良心血管事件发生率较对照组显著减少（P＆lt;0.05）.结论卡维地洛可显著减小急性心肌梗死病人QT、JT离散度及提高慢性心率变异性,减少心血管不良事件.     

Effects of Qi-training on heart rate variability

This study investigates changes in autonomic nervous function through Qi-training. The power spectrum of heart rate variability (HRV) was examined in 20 sedentary healthy subjects and 20 Qi-trainees. It was found that Qi-training in healthy young subjects during controlled respiration increases the high frequency (HF) power and decreases the low frequency/high frequency (LF/HF) power ratio of HRV. These results support the hypothesis that Qi-training increases cardiac parasympathetic tone. In addition, Qi-trainees were found to have higher parasympathetic heart modulation compared with their age-matched, sedentary counterparts. This augmented HRV in Qi-trainees provides further support for long-term Qi-training as a possible non-pharmacological cardio-protective maneuver. In conclusion, Qi-training may stabilize the autonomic nervous system by modulating the parasympathetic nervous system.     

耳穴压丸对正常人心率和心率变异性的影响

目的:观察比较正常人在耳穴压丸刺激前、刺激时和刺激后的心率及心率变异性变化的差异,初步探讨耳穴对人体生理状况调节的机制。方法:30例受试者用Actiheart心电记录仪记录耳穴刺激前10 min,刺激时20 min,刺激后20 min的心率和心率变异性指标;采用SPSS 13.0统计软件分析比较3个时间段心率和心率变异性影响的差异。结果:(1)与刺激前比较,耳穴压丸刺激时心率(BPM)值下降,NN间期标准差(SDNN),5 min SDNN(SDANN),心率变异性(HRV)三角函数,lnVLF(极低频功率)和LF/HF(低频功率/高频功率)值均升高(P<0.05),刺激后SDNN,SDANN,HRV三角函数,lnVLF,lnLF,LF/HF值均升高(P<0.05);(2)与刺激中比较,刺激后SDANN,LF/HF值均升高(P<0.05);(3)相邻期间差的平方根(RMSSD),lnHF 3个时间段比较均无统计学差异(P>0.05)。结论:耳穴压丸能调整自主神经的均衡性,增大HRV总体的大小,对自主神经系统有双向良性调节作用。     

硫辛酸治疗糖尿病心脏自主神经病变疗效分析

目的：评价硫辛酸对糖尿病患者心率变异性的影响。方法：收集糖尿病患者60例,分为治疗组和对照组,治疗组患者接受硫辛酸300mg＋100ml生理盐水静脉注射,每日1次治疗,连续2周,运用24小时动态心电图检测所有患者在治疗前后心率变异性指标的变化,明确硫辛酸治疗糖尿病心脏自主神经病变的疗效。结果：治疗组心率变异性各项指标治疗2周后较治疗前有显著提高,自主神经症状明显好转,与对照组比较有显著意义。结论：硫辛酸治疗糖尿痛心脏自主神经病变的疗效显著,可以改善患者心率变异性。     

急性冠脉综合征患者心率变异性特点及放松功干预的影响

目的观察急性冠脉综合征(ACS)患者心率变异性(HRV)特点及放松功对其影响。方法60例ACS患者随机分为放松功组和对照组,各30例。在常规西药治疗基础上,放松功组给予2周放松功训练,对照组在相应时间静卧休息。观察HRV时域指标变化及心率、血压和室性心律失常情况。结果两组患者都存在HRV降低;放松功能不同程度地提高ACS患者的HRV(P<0.01,P<0.05),减慢心率、降低血压(P<0.01),减少室性心律失常发生(P<0.01,P<0.05)。结论ACS患者存在HRV降低,放松功能不同程度地提高其HRV,减慢心率、降低血压,并能减少室性心律失常的发生。     

脑卒中患者睡眠结构与心率变异性的相关性研究

[摘要]目的观察脑卒中患者睡眠结构对心率变异性的影响,研究脑卒中患者睡眠结构与心率变异性的相关性。方法对确诊为脑卒中的5l例患者应用24h全信息动态心电图系统和多导睡眠图进行全夜监测,并与24名正常相同年龄范围人群对照。结果与对照组相比,脑卒中患者HRV时域参数各项指标均显著降低（P均〈0．01）;总睡眠时间（TST）、睡眠效率（SE）、REM期均明显减少（P均〈0．01）,而觉醒期（WASO）明显增加（P〈0．01）;与脑卒中后无睡眠结构紊乱组相比,脑卒中伴睡眠结构紊乱组SDNN、SDANN、RMSSD下降（P均〈0．05）。结论在脑卒中已存在交感神经激活的状态下,睡眠结构紊乱更增加了交感神经的张力,使人交感神经兴奋,影响自主神经功能导致猝死风险增大。     

血塞通过心率变异性及心室晚电位的干预

目的：探讨血塞通过心率变异性、心室晚电位的影响。方法：45例高血压病和／或冠心病患者注射血塞通注射液2周，600mg/d。治疗前后作高分辨率心电图检查。结果：治疗前心率变异性低下和心室晚电位阳性率分别是55．6％和37．8％。治疗2周后上述指标转阴率分别是52．2％和47．1％。结论：血塞通能调整心脏的植物神经支配失衡和心电不均一性，起到心电稳定作用。     

温阳活血解毒汤对男性阳气亏虚血瘀型慢性心力衰竭患者睾酮及心率变异性的影响

目的:观察温阳活血解毒汤对男性阳气亏虚血瘀型慢性心力衰竭患者睾酮及心率变异性(heart rate variability,HRV)的临床疗效,探讨温阳活血解毒汤对男性阳气亏虚血瘀型慢性心力衰竭患者睾酮及HRV的作用机制。方法:将110例男性慢性心力衰竭门诊或住院患者随机数字表分治疗组及对照组,各55例。对照组为规范化西药基础治疗加用参附汤,治疗组在西药基础治疗的基础上加用温阳活血解毒汤,两组疗程均为28 d。疗程结束后观察两组患者临床疗效,中医证候积分,6 min步行距离,明尼苏达生活质量评分,睾酮,左心室射血分数(LVEF),HRV等变化规律,同时记录治疗期间不良反应。结果:治疗组临床疗效总有效率(90.91%),优于对照组(84.45%)(P0.05),两组治疗后6 min步行距离,睾酮,LVEF,HRV较本组治疗前明显提高,明尼苏达生活质量评分,中医证候积分,N端前BNP(NT-pro BNP)明显下降,治疗后治疗组上述指标明显优于对照组(P0.05)。结论:男性阳气亏虚血瘀型慢性心力衰竭患者治疗前睾酮与HRV水平较低,温阳活血解毒汤使男性慢性心力衰竭患者阳气亏虚的程度得到纠正,心功能得到改善,生活质量提高,其作用机制可能与其抑制交感神经活性,提高血清睾酮水平、改善HRV有关,中药具有类激素样作用,具有整体治疗、多靶点干预等独特优势,可能正是中医药调节神经内分泌的特点和意义所在,值得进一步深入研究。     

血塞通对心率变异性及心室晚电位的干预

目的 :探讨血塞通对心率变异性、心室晚电位的影响。方法 :45例高血压病和 或冠心病患者注射血塞通注射液2周 ,6 0 0mg d。治疗前后作高分辨率心电图检查。结果 :治疗前心率变异性低下和心室晚电位阳性率分别是 5 5 .6 %和 37.8%。治疗 2周后上述指标转阴率分别是 5 2 .2 %和 47.1%。结论 :血塞通能调整心脏的植物神经支配失衡和心电不均一性 ,起到心电稳定作用。     

Effect of acupuncture on heart rate variability in primary dysmenorrheic women

Primary dysmenorrhea is a common gynecological complaint among young women that is related to an autonomic nervous system (ANS) disturbance. Acupuncture is one of several therapeutic approaches for primary dysmenorrhea, since it can modulate ANS function. The heart rate variability (HRV) parameters such as high frequency (HF), low frequency (LF) and LF/HF ratio are generally accepted tools to assess ANS activity. The purpose of this study was to investigate the effects of acupuncture applied at Hegu (LI4) and Sanyinjiao (SP6) points on HRV of women with primary dysmenorrhea during the late luteal phase. The experimental design was a crossover and patient-blinded procedure. All subjects participated in Sham (SA) and Real Acupuncture (RA) procedure, separated by one month, in a crossover sequence. The participants included 38 women (mean age 22.3 years; weight 53.8 kg; height 162.6 cm). HRV measurement was 15 min before and 15 min after an acupuncture procedure. The RA procedure was performed at two bilateral acupoints, but needles were inserted subcutaneously to the acupuncture points for the SA procedure. The RA induced a significant decrease in LF/HF ratio and a significant increase in the HF power, while SA treatment caused a significant increase only in the HF power. Manual acupuncture at bilateral acupoints of LI4 and SP6 may play a role in dysmenorrhea treatment with autonomic nervous system involvement.     

失眠的证候学特征及与心率变异分析相关性的临床研究

目的：寻找诊断和评估失眠的有效方法，研究失眠程度与中医临床症状之间的关系，明确心率变异分析在评估失眠中的作用。方法：①中医证候症状学调查；②依据匹兹堡睡眠质量量表（PSQI）对失眠程度进行评估、分析。③用心率变异分析仪测量有关数据，并对测量值与PSQI分数作相关性研究。结果：共观察102例，病程1月至50年。经PSQI评分，轻度睡眠障碍14例，占13．7％；中度46例，占45．1％；重度42例，占41．2％。心率变异分析结果，PSQI分值与低频功率与高频功率的比值（LF／HF）值之间不存在直线关系。结论：失眠见于多种疾病，女性和老年人发生率高。证候分类以心脾两虚型最多，临床上多虚实夹杂，以偏于虚证者最多见。根据PSQI评分结果，本次观察以中、重度失眠病例占主导。心率变异分析结果，PSQI分值增高并不能直接引发LF／HF值升高。心率的变化是交感神经（SNS）和副交感神经（PNS）拮抗作用的结果。     

参松养心胶囊及曲美他嗪联用对慢性心力衰竭合并窦性心动过缓患者心功能和HRV相关指标的影响

目的:研究参松养心胶囊与曲美他嗪联用对慢性心力衰竭合并窦性心动过缓患者心功能和HRV相关指标的影响。方法:选取2015年7月至2016年8月石景山医院收治的慢性心力衰竭合并窦性心动过缓患者94例。按照就诊顺序分为观察组与对照组,每组47例。对照组患者予以曲美他嗪治疗,观察组则在对照组的基础上加用参松养心胶囊治疗。分别比较2组临床疗效,治疗前后心功能、24 h动态心电图平均心率以及HRV相关指标变化情况。结果:观察组患者治疗总有效率为97.87%(46/47),显著高于对照组的85.11%(40/47)(P0.05)。治疗前2组患者各项心功能水平比较,差异无统计学意义,分别治疗后观察组患者LVEF、CO、SV、6 min步行距离分别为(53.6±4.1)%、(5.0±0.7)L/min、(46.1±6.9)mL/次、(394.2±60.4)m,均显著高于对照组的(49.2±3.9)%、(4.2±0.6)L/min、(41.4±5.7)mL/次、(363.6±58.2)m(均P0.05)。治疗后观察组与对照组患者24 h动态心电图平均心率分别为(66.8±6.1)次/min、(55.2±6.7)次/min,均显著高于治疗前,而观察组又显著高于对照组(均P0.05)。治疗后观察组患者SDANN、SDNN、r MSSD、PNN50水平分别为(112.6±20.1)ms、(129.2±21.5)ms、(25.2±5.7)ms、(6.0±0.8)%,均显著高于对照组的(85.7±19.2)ms、(94.1±14.5)ms、(20.1±5.8)ms、(2.8±0.7)%(均P0.05)。结论:参松养心胶囊与曲美他嗪联合治疗慢性心力衰竭合并窦性心动过缓的疗效显著,可有效改善患者心功能以及HRV相关指标,有利于促进患者早日康复。     

丹参多酚对急性心肌梗死患者心率变异性的影响

目的：观察丹参多酚对急性心肌梗死患者心率变异性的影响。方法：将60例在本院心内科住院经经皮冠状动脉治疗（PCI）的急性心肌梗死患者,按随机数字表法分为常规组和丹参多酚组各30例。常规组PCI后即用双重抗血小板、抗凝、稳定斑块等常规治疗,丹参多酚纽在常规组基础上加用丹参多酚静脉滴注。分别做动态心电图测定2纽心率变异（HRV）的时域参数与频域参数。结果：2组HRV各指标比较,差异均有显著性意义（P〈O．05）。结论：丹参多酚对急性心肌梗死患者心率变异性有明显改善作用。     

Effects of electrical acupuncture on acupoint BL15 evaluated in terms of heart rate variability, pulse rate variability and skin conductance response

In this research, heart rate variability (HRV), pulse rate variability (PRV) and human skin conductance (SC) of all acupoints on Heart Meridian were used to evaluate the effects of electrical acupuncture (EA) on acupoint BL15 (Bladder Meridian). Ten healthy volunteers (aged 23 +/- 6) were selected as the control group on the first day, and then used again as the experimental group on the second day. The control group received sham EA during the study, while subjects of the experimental group were stimulated by 2 Hz EA on acupoint BL15 for 10 minutes. Electrocardiogram (ECG), wrist blood pressure pulse meter and skin conductance response (SCR) device were used to measure and analyze HRV, PRV and SCR for the two groups before and after stimulation. From the spectrum analysis of ECG and pulse pressure graph, we found that the EA applied on BL15 could induce a significant increase in the normalized high frequency power (nHFP) component of HRV and PRV, as well as a significant decrease in the normalized low frequency power (nLFP) part (p < 0.05). Moreover, both the heart rate and pulse rate were reduced in the analysis of the time domain of ECG and PRV. Furthermore, most of the SCR values at acupoints were decreased after stimulation. These results also indicate that the stimulation of BL15 by EA could cause relaxation, calmness and reduce feeling of tension or distress.     

血塞通注射液对糖尿病性心肌病患者心率变异性的影响

目的观察血塞通注射液对糖尿病性心肌病(DCM)患者心率变异性(HRV)的影响。方法将80例DCM患者随机分为治疗组40例和对照组40例。对照组均给予二甲双胍及单硝酸异山梨酯口服,治疗组在对照组治疗基础上加用血塞通注射液静脉滴注,观察2组临床疗效及治疗前后HRV时域及频域指标的变化。结果治疗组总有效率82.5%,对照组总有效率62.5%,2组总有效率比较差异有统计学意义(P0.05)。治疗组心率变异性时域及频域指标较本组治疗前及对照组治疗后比较差异均有统计学意义(P0.05,P0.01)。结论血塞通注射液能明显减轻DCM患者临床症状,对DCM患者心率变异性有明显影响。     

不同剂量卡维地洛对急性心肌梗死患者QT、JT离散度及心率变异性的影响

目的 研究不同剂量卡维地洛对急性心肌梗死患者QT、JT离散度及心率变异性的影响.方法 80例急性心肌梗死患者纳入研究,接受为期3个月的治疗.根据卡维地洛用量将患者随机分均为小剂量组（3.125 mg～6.25 mg,每天2次）和大剂量组（12.5 mg～25 mg,每天3次）.治疗前后所有患者均接受长程心电图检查.记录QT、JT离散度及心率变异性的时域、频域指标.所有患者随访半年.结果经过3个月的治疗,两组QT、JT离散度、心率变异性时域及频域指标较治疗前明显改善,大剂量组更为明显（P〈0.05）.两组半年内不良心血管事件发生率无统计学意义（P〉0.05）.结论与小剂量相比,大剂量卡维地洛能进一步减小急性心肌梗死患者QT、JT离散度,提高慢性心率变异性,但不降低半年内不良心血管事件.     

针刺疗法对冠心病患者心率变异性的影响

采用心率变异频域法测试２０例冠心病患者针刺前后心率变异性的情况。结果表明：内关手法组、电针内关组针刺前后心率变异频谱中的低频成分都有显著性差异，对照组变化不显著。各组的高频成分针刺前后比较无显著性变化。低频／高频比值只有电针组有统计学意义。