老年人清晨血压与全天血压相关性探讨

目的：探讨老年人清晨血压与全天血压之间的关系。方法根据动态血压监测结果,从我院2015年9至10月接受动态血压监测的体检老年人中选取全天血压均值升高的高血压患者和全天血压均值正常者各44例,分别为高血压组（A 组）和正常对照组（B 组）。比较两组的清晨血压与全天血压均值,并分析清晨收缩压／舒张压均值与全天血压收缩压／舒张压均值之间是否存在相关性。结果A 组的清晨和全天血压均值都高于 B 组。两组的清晨收缩压／舒张压均值与全天收缩压／舒张压均值之间呈正相关关系,且差异有统计学意义（P ＜0．001）。结论老年人清晨血压能在一定程度上反映全天血压水平,建议在老年人中积极推行清晨血压管理。     

老年原发性高血压患者血压晨峰与左心室肥厚的关系

目的探讨老年原发性高血压患者血压晨峰与左心室肥厚的关系。方法选择老年原发性高血压患者80例,根据24 h动态血压监测分为2组:血压晨峰值≥55 mm Hg(1 mm Hg=0.133 kPa)为晨峰组,血压晨峰值<55mm Hg为非晨峰组,每组40例,均常规行超声心动图检查,计算左心室重量指数(LVMI)。结果晨峰组24h、昼间、夜间收缩压及血压晨峰均明显高于非晨峰组(P<0.05),晨峰组LVMI明显高于非晨峰组;左心室肥厚比例明显高于非晨峰组(P<0.05)。结论老年原发性高血压患者血压晨峰与左心室肥厚密切相关。     

Ambulatory Arterial Stiffness Index Is Not Associated With Magnetic Resonance Imaging Markers of Cerebral Small Vessel Disease in Lacunar Stroke Patients

Ambulatory arterial stiffness index (AASI) is associated with microvascular damage in other organs, but the association with microvascular brain damage is unknown. The association of AASI with magnetic resonance imaging (MRI) markers of cerebral small vessel disease in 143 patients with lacunar stroke was investigated. We performed 24‐hour ambulatory blood pressure monitoring and scored the presence of lacunes, white matter hyperintensities, perivascular spaces, and cerebral microbleeds on brain MRI. In logistic regression analyses, AASI was associated with white matter hyperintensities, but, after adjustment for age and sex, this association lost significance. AASI was not associated with lacunes, microbleeds, or perivascular spaces. Systolic and diastolic 24‐hour blood pressure values were associated with lacunes, perivascular spaces, and microbleeds independent of age and sex. Despite its significance and growing interest as a possible prognostic and therapeutic target in (micro)vascular diseases, AASI seems to have no added value over standard 24‐hour blood pressure in cerebral small vessel disease.     

老年高血压患者血压节律变化与靶器官损害的关系

目的 探讨老年高血压患者血压节律变化与靶器官损害的关系. 方法 70例老年高血压患者均行24h动态血压检测、颈动脉超声和超声心动图检查,根据24 h动态血压检测结果分为2组:勺形组40例及非勺形组30例,并对2组颈动脉粥样硬化(CAS)、左室肥厚(LVH)及动态血压各参数进行比较. 结果 CAS及LVH检出率非勺形组均高于勺形组(P＜0.01);2组间24 h平均收缩压(24hSBP)及舒张压(24hDBP)、24 h收缩压和舒张压负荷值(24hSBPL、24hDBPL),差异无统计学意义(P＞0.05).勺形组白天平均收缩压(dSBP)及舒张压(dDBP)、白天收缩压和舒张压负荷值(dSBPL、dDBPL)高于非勺形组(P＜0.05).勺形组夜间平均收缩压(nSBP)及舒张压(nDBP)、夜间收缩压和舒张压负荷值(nSBPL、nDBPL)明显低于非勺形组(P＜0.01). 结论 老年高血压患者血压节律变化的消失与靶器官损害关系密切,高血压患者降压治疗的同时还需纠正紊乱的血压昼夜节律.     

Silent cerebrovascular disease in the elderly. Correlation with ambulatory pressure

Does the average daily blood pressure correlate with hypertensive cerebrovascular disease better than the casual pressure, as has been reported in other target organ involvement? We investigated the associations of two abnormal findings on brain magnetic resonance imaging suggestive of a vascular etiology, low intense foci (lacunae), and periventricular hyperintense lesions on T1- and T2-weighted images, with both office and average daily blood pressure values in a population of 73 healthy normotensive and hypertensive elderly individuals (70 +/- 6 years old). Lacunae were detected in 34 subjects (47%); the number per subject ranged from 0 to 19 and was significantly correlated with advancing age. Furthermore, these changes were supposedly related to the average of noninvasive ambulatory (24-hour and during awake and asleep periods) pressure recordings but not to office pressures. The grade of periventricular hyperintensity was also significantly associated with advancing age and the average of ambulatory systolic pressure recordings, particularly during sleep, but not with office blood pressure. In comparisons of normotensive, "office hypertensive," and hypertensive subgroups, abnormalities on magnetic resonance imaging were appropriate to the level of the 24-hour blood pressure measurements but not to that of clinic pressure. In hypertensive patients, the presence of electrocardiographic evidence of left ventricular hypertrophy was also associated with greater abnormalities on magnetic resonance imaging. We conclude that ambulatory blood pressure monitoring is superior to casual pressure measurements in predicting latent cerebrovascular disease, which is unexpectedly common in apparently healthy elderly subjects.     

动态血压监测在评价老年高血压靶器官损害中的临床价值

目的探讨动态血压监测在评价老年高血压靶器官损害中的临床价值。方法对206例老年高血压患者进行24小时动态血压监测,根据是否有靶器官损害分为单纯高血压组（A组）,合并心脏损害组（B组）,脑损害组（C组）,肾损害组（D组）,多脏器损害组（E组）,对各组动态血压值、血压昼夜节律、血压变异性及血压负荷值进行分析。结果合并脏器损害组的动态血压值、血压负荷值较单纯高血压组明显增高（P〈0．05或P〈0．01）,在多脏器损害组中收缩压变异性明显增大（P〈0．01）;靶器官损害组的血压昼夜节律异常明显增多（P〈0．01）。结论高血压患者24小时动态血压变化对预测高血压并发症的发生和指导合理治疗有重要意义。     

中老年男性高血压患者血压晨峰临床分析

目的 研究中老年男性高血压患者血压晨峰发生情况与血压变异性、降压药物的关系.方法 对2009年1月至2010年12月住院或体检的中老年军人进行问卷及体格检查、实验室检查及动态血压监测,并根据血压晨峰程度是否超过35 mm Hg(1 mm Hg =0.133 kPa)分为晨峰组(101例)和非晨峰组(420例)进行组间比较.结果 中老年男性高血压患者血压晨峰的发生率为19.4％,其中老年和超高龄患者血压晨峰患病率高于中年患者(18.9％、21.8％、5.6％,P＜0.01);与非晨峰组比较,晨峰组具有较高的日间平均收缩压[(132.8±13.3) mm Hg比(128.8±13.3)mm Hg]、空腹血糖水平[(5.96±1.59) mmol/L比(5.68±1.22) mmol/L,P＜0.05]以及24h血压变异性;服用利尿剂组晨峰发生率较未服用组高(27.4％比17.6％,P＜0.05).结论 老年高血压患者易出现血压晨峰现象,空腹血糖水平、24h血压变异性可能是血压晨峰的影响因素,利尿剂可能不利于血压晨峰的控制.     

Brain microbleeds are associated with ambulatory blood pressure levels in a hypertensive population

Brain microbleeds, indicative of cerebral small-vessel disease, may occur with increased frequency in patients with hypertension. However, little is known about the relation of these abnormalities with blood pressure levels. We assessed the relation between ambulatory measured blood pressure and the presence of microbleeds in a cohort of hypertensive patients without a history of cerebrovascular disease. A total of 218 participants (110 males, age 52.5+/-12.6 years) underwent 24-hour ambulatory blood pressure monitoring twice (off-medication) and brain MRI to detect microbleeds and coexisting white matter hyperintensities. We performed logistic regression analyses to relate the following blood pressure components (based on both recordings) to microbleeds: the mean 24-hour, awake, and asleep blood pressures; nocturnal hypertension (asleep pressure >or=120/70 mm Hg); nocturnal blood pressure dipping. Models were adjusted for age and sex, and additionally for cardiovascular risk factors and white matter hyperintensities. We detected microbleeds in 35 participants (16.1%; 95% confidence interval, 11.1% to 21.0%). On average, each standard deviation increment in blood pressure, whether 24-hour, awake, or asleep, was significantly and independently associated with a 1.8- to 1.9-fold higher likelihood for microbleeds (all models P<0.05). Similarly, the adjusted odds ratio for microbleeds was 5- to 6-fold higher in subjects diagnosed with nocturnal hypertension (all models P<0.05). Microbleeds were not associated with nocturnal dipping. In conclusion, brain microbleeds are frequently found in hypertensive patients without a history of cerebrovascular disease, and are independently associated with higher daytime as well as night-time blood pressure levels.     

老年高血压病患者左心室肥厚危险因素分析

目的　旨在探讨老年高血压病患者伴发左心室肥厚的危险因素。方法　15 5例老年男性高血压病患者分为高血压伴左心室肥厚组(45例)和高血压无左心室肥厚组(110例) ,比较两组患者2 4h血压监测各项指标、纤维蛋白原及血脂等浓度,用多元逐步回归分析,探讨左心室肥厚的可能影响因素。结果　两组患者之间年龄、体重指数、体表面积差异无显著性意义;但高血压病程、2 4h平均脉压、平均收缩压及纤维蛋白原差异有显著性意义;2 4h平均脉压升高可能为左心室肥厚的独立危险因素。结论　高血压伴发左心室肥厚是长期血压控制不良、代谢紊乱等多因素作用的结果,其中,脉压增大者更易出现左心室肥厚。     

老年高血压患者动态血压负荷和脉搏波传导速度的相关性研究

目的探讨老年高血压患者24 h动态血压负荷与颈桡动脉脉搏波传导速度(crPWV)的相关性。方法选取60～79岁的老年原发性高血压患者187例,对所有入选对象进行24 h动态血压监测,根据获取的24 h动态血压监测参数分为杓型组90例与非杓型组97例,选择同期体检人群82例为正常对照组。所有受试者行24 h动态血压监测,应用脉搏波速度测定仪测定crPWV,并进行分析。结果杓型组及非杓型组24 h、昼间及夜间收缩压、舒张压负荷均显著高于正常对照组(P<0.01)。非杓型组夜间血压负荷较杓型组升高(P<0.05)。杓型组及非杓型组crPWV均较正常对照组升高(P<0.05)。控制性别、年龄因素后,老年高血压患者24 h收缩压、夜间收缩压负荷、昼间舒张压负荷是crPWV影响的主要因素。结论老年高血压患者动态血压负荷升高,大动脉顺应性降低,其中24 h收缩压、夜间收缩压负荷、昼间舒张压负荷是影响大动脉顺应性的主要危险因素。     

老年代谢综合征患者认知功能与血压昼夜节律的关系

目的探讨老年代谢综合征(MS)患者认知功能与血压昼夜节律的关系。方法选择223例老年MS患者作为MS组,行24 h动态血压监测,根据夜间血压下降率,再将患者分为杓型组(血压下降率10%～20%,64例)、非杓型组(血压下降率<10%,53例)、超杓型组(血压下降率>20%,55例)和反杓型组(血压升高,51例)4个亚组;另选同期健康体检者100例为对照组。用简易智能状态检查量表(MMSE)对受试者进行认知功能调查,并进行比较。结果 MS组MMSE评分明显低于对照组(P<0.05)。非杓型组、超杓型组和反杓型组MMSE评分明显低于杓型组,超杓型组和反杓型组MMSE评分明显低于非杓型组(P<0.05),超杓型组与反杓型组MMSE评分差异无统计学意义(P>0.05)。结论老年MS患者认知功能下降,可能与血压昼夜节律减弱或消失有关。     

糖尿病对老年高血压患者动态血压及血压变异性的影响

目的探讨老年2型糖尿病患者中糖尿病对原发性高血压（高血压）患者的动态血压（ambulatory bloodpressure,ABP）及血压变异性（blood pressure variability,BPV）的影响。方法选取40例单纯高血压及42例65岁以上合并2型糖尿病的高血压患者,行24 h ABP监测,对2组患者的ABP及BPV进行对比分析。结果合并2型糖尿病的高血压患者日间平均收缩压（dmSBP）及夜间平均收缩压（nmSBP）高于单纯高血压患者,差异有统计学意义（P〈0.05或0.01）;合并2型糖尿病的高血压患者日间脉压（dmPP）、夜间脉压（nmPP）及24 h平均脉压差（24 h-mPP）均大于单纯高血压患者,差异有统计学意义（P〈0.05或0.01）;BPV方面,合并2型糖尿病的高血压患者日间收缩压标准差（dSBPSD）及日间收缩压标准差变异系数（dSBPCV）、夜间收缩压标准差（nSBPSD）及夜间收缩压标准差变异系数（nSBPCV）、24 h收缩压标准差（24 h-SBPSD）均显著高于单纯高血压患者,差异有统计学意义（P〈0.05或0.01）。结论年龄、高血压是老年2型糖尿病患者大血管病变的独立危险因素,2型糖尿病合并高血压时,ABP及BPV增大,心血管系统的结构与功能异常。改善糖代谢状况将有助于形成良好的代谢记忆,从而改善血流动力学,减少心血管并发症。     

原发性高血压患者动态血压和颈动脉斑块与认知功能相关性研究

目的探讨原发性高血压患者动态血压、颈动脉斑块对认知功能的影响。方法将594例高血压患者按24h血压节律及颈动脉斑块的有无分为4组,(1)杓型血压+无颈动脉斑块组(149例);(2)杓型血压+颈动脉斑块组(144例);(3)非杓型血压+无颈动脉斑块组(154例);(4)非杓型血压+颈动脉斑块组(147例)。所有患者进行24h动态血压检测。彩色电脑声像仪逐节段观察颈动脉管壁内膜情况及有无斑块形成。使用简易智能状态检查量表(MMSE)对所有患者进行认知功能调查。结果非杓型血压+颈动脉斑块组、杓型血压+颈动脉斑块组、非杓型血压+无颈动脉斑块组、杓型血压+无颈动脉斑块组MMSE分别为(26.2±1.2)分、(28.3±1.5)分、(28.2±1.5)分(、28.8±0.6)分,非杓型血压+颈动脉斑块组MMSE与其他3组比较,差异有统计学意义(P<0.05,P<0.01)。logMMSE与24 h平均收缩压、昼间平均收缩压、昼间平均脉压、夜间平均收缩压、夜间平均舒张压、夜间平均脉压及颈动脉斑块呈负相关,与收缩压夜间下降率及舒张压夜间下降率呈正相关。结论动态血压节律变化及颈动脉斑块的形成与原发性高血压患者的认知功能损害相关。     

高血压患者动态动脉僵硬指数与血压变异性的关系

目的探讨高血压患者动态动脉僵硬指数(AASI)与血压变异性(BPV)的关系。方法入选2009-03-2011-10中国医科大学附属第一医院就诊的高血压患者119例,所有患者均行24h动态血压监测。AASI定义为1减去24h舒张压和收缩压的回归系数。依据AASI水平,分为4组:AASI<0.30、0.30～<0.41、0.41～<0.52、≥0.52。结果相关性分析显示,AASI分别与年龄(r=0.301,P<0.01)、24h收缩压(r=0.276,P=0.001)、白昼收缩压(r=0.225,P=0.008)、夜间收缩压(r=0.366,P<0.01)、24h脉压(r=0.510,P<0.01)、24h收缩压标准差(r=0.297,P=0.001)呈正相关,而与24h舒张压标准差(r=-0.256,P=0.002)、24h平均心率标准差(r=-0.205,P=0.017)及24h平均动脉压标准差(r=-0.202,P=0.017)呈负相关。多元线性逐步回归分析显示,AASI与24h脉压和24h收缩压标准差呈正相关(β=0.321,β=0.725,均P<0.01),与24h舒张压标准差和24h平均动脉压标准差呈负相关(β=-0.428,β=-0.346,均P<0.01)。结论 AASI与BPV密切相关。     

老年高血压患者动态动脉硬化指数与估测肾小球滤过率的相关性

目的 观察老年高血压患者动态动脉硬化指数（ AASI）与估测肾小球滤过率（eGFR）的相关性,探讨以AASI大小反应的动脉硬化程度在老年高血压患者肾功能受损中的作用.方法 218例行24小时动态血压检测血肌酐水平基本正常的老年高血压患者,根据文献方法计算AASI,以AASI≤0.55或AASI＞ 0.55分为两组,比较各组间eGFR的差异,以及运用Pearson相关分析及多元线性回归分析eGFR与AASI及年龄、平均收缩压、平均舒张压、血肌酐水平等因素的相关性.结果 与AASI≤0.55组比较,在AASI＞ 0.55组中eGFR值明显降低（P＜0.001）.Pearson 相关分析显示,eGFR与AASI呈负相关（r=-0.624,P＜0.001）,控制年龄、平均收缩压、平均舒张压、平均脉压、血肌酐水平等因素后,偏相关分析显示,eGFR仍与AASI显著相关（r=-0.343,P＜0.001）.多元逐步回归分析显示,eGFR 与肌酐水平、AASI独立相关,标准化偏回归系数分别为-0.770、-0.240,P＜0.001.结论 在老年高血压患者,AASI与eGFR呈独立负相关,AASI值增加是老年高血压患者早期肾功减退的独立危险因素.     

Ambulatory blood pressure and left ventricular mass index in hypertensive children

To determine whether ambulatory blood pressure is more predictive of left ventricular hypertrophy than is casual blood pressure in hypertensive children, echocardiography and ambulatory blood pressure data from 37 untreated hypertensive children were analyzed. Left ventricular mass was calculated using the Devereux equation, left ventricular mass index was calculated as left ventricular mass (in grams)/height(2.7) (in meters), and left ventricular hypertrophy was defined as left ventricular mass index >51 g/m(2.7). Average blood pressure, blood pressure load, and blood pressure index (average blood pressure divided by pediatric ambulatory blood pressure 95th percentile) were calculated. Left ventricular mass index was strongly correlated with 24-hour systolic blood pressure index (r=0.43, P=0.008) and was also correlated with 24-hour systolic blood pressure (r=0.34, P=0.037), 24-hour systolic blood pressure load (r=0.38, P=0.020), wake systolic blood pressure load (r=0.37, P=0.025), sleep systolic blood pressure (r=0.33, P=0.048), and sleep systolic blood pressure load (r=0.38, P=0.021). Left ventricular mass index did not correlate with age, weight, clinic blood pressure, or ambulatory diastolic blood pressure. The overall prevalence of left ventricular hypertrophy was 27%. The prevalence of left ventricular hypertrophy was 47% (8 of 17) in patients with both systolic blood pressure load >50% and 24-hour systolic blood pressure index >1.0, compared with 10% (2 of 20) in patients without both criteria (P=0.015). These data suggest ambulatory blood pressure monitoring may be useful for the clinical assessment of hypertensive children by identifying those at high risk for the presence of end organ injury.     

老年高血压患者血压昼夜节律与颈动脉粥样硬化的相关性研究

目的探讨老年高血压患者血压昼夜节律与颈动脉粥样硬化的相关性。方法2003￣2004年来我院老年高血压患者共72例(男68例女4例),根据动态血压监测(ABPM)结果分为正常昼夜节律组,即杓型组(n=37,男35例女2例)和异常昼夜节律组,即非杓型组(n=35,男33例女2例)。对所有患者均行颈动脉超声检查,测定右侧颈总动脉(RCCA)、颈内动脉(RICA)内膜中层厚度(IMT)、管腔内径(D),并计算各自的IMT/D值,测定右侧颈动脉分叉处(RBIF)的IMT,观察并记录双侧颈动脉系统斑块的大小、数量。结果(1)两组年龄(Age)、体重指数(BMI)、总胆固醇(TC)、甘油三酯(TG)、全天平均收缩压(24hMSP)、全天平均舒张压(24hMDP)比较均无显著性差异(P>0.05)。(2)两组的RCCA及RICA的IMT、D、IMT/D比较均无显著性差异(P>0.05)。而右颈动脉分叉处IMT,非杓型组明显高于杓型组(P<0.001)。(3)两组总斑块检出率无显著差异,但多发性斑块检出率非杓型组显著高于杓型组(P<0.05)。结论老年高血压患者血压昼夜节律与颈动脉粥样硬化明显相关,异常的血压昼夜节律提示可能存在更严重的靶器官损害。     

男性高龄高血压患者腔隙性脑梗死与夜间血压下降幅度的相关性

目的探讨在男性高龄高血压患者中,24h动态血压及夜间血压下降幅度与腔隙性脑梗死(lacunar infarc-tion,LI)的相关性。方法以96例男性高龄高血压患者为对象,均行头颅MRI检查和动态血压监测,并同时收集患者的临床和实验室数据。根据LI的数目,将患者分为无/单发LI组25例和多发LI组71例。结果与无/单发LI组比较,多发LI组患者的夜间平均收缩压明显升高(P=0.01),夜间血压下降幅度明显增大,差异有统计学意义(P=0.00);2组患者的年龄、吸烟史、饮酒史、冠心病史、高血压病程、总蛋白、尿素、肌酐、尿酸、TC、TG、HDL-C、LDL-C、空腹血糖比较,差异无统计学意义(P>0.05);多发LI组患者非杓型血压的发生率显著升高(P=0.01)。结论在高龄高血压患者中,夜间血压异常升高及昼夜节律的异常可能在LI的发展过程中起重要作用。     

Daily life blood pressure changes are steeper in hypertensive than in normotensive subjects

Target organ damage in hypertensive patients is related to their increased average blood pressure and greater 24-hour blood pressure variability. Whether the rate of blood pressure changes is also greater in hypertension, producing a greater stress on arterial walls, is not known, however. Our study aimed at addressing this issue by computer analysis of 24-hour ambulatory intra-arterial blood pressure recordings in 34 subjects (29 males), 13 normotensive subjects and 21 uncomplicated hypertensive subjects (mean age+/-SD, 40.4+/-11.8 years). The number, slope (mm Hg/s), and length (beats) of systolic blood pressure ramps of 3 or more consecutive beats characterized by a progressive increase (+) or reduction (-) in systolic blood pressure of at least 1 mm Hg per beat were computed for each hour and for the whole 24-hour period. Twenty-four-hour average systolic blood pressure was 112.9+/-2.1 and 159.4+/-5.7 mm Hg in normotensive and hypertensive subjects, respectively. Over the 24 hours, the number and length of systolic blood pressure ramps were similar in both groups, whereas the slope was markedly different (24-hour mean+/-SE slope, 4.80+/-0.30 in normotensives and 6.50+/-0.40 mm Hg/s in hypertensives, P<0.05). Ramp slope was not influenced by age or reflex pulse interval changes, but it was greater for higher ramp initial systolic blood pressure values. Thus, in daily life, hypertensive subjects are characterized by steeper blood pressure changes than normotensives, and this, regardless of the mechanisms, may have clinical implications, because it may be associated with greater traumatic effect on the vessel walls of hypertensive patients.     

Diurnal variation of blood pressure in elderly patients with essential hypertension

Twenty-one elderly patients with essential hypertension, all over 65 years of age, were subjected to automated noninvasive 24-hour blood pressure measurement. Readings were obtained every 7.5 minutes throughout the day. The data were analyzed with respect to: correlation between office and ambulatory pressure measurements; possible differences in the circadian blood pressure pattern; and the existence of hypertensive or atherosclerotic cardiovascular complications. In all patients, the office systolic pressures were significantly higher than the ambulatory daytime pressures; diastolic pressures were similar. At night, two patterns of blood pressure emerged. In one there was a further fall in both systolic and diastolic pressures to normotensive levels, whereas the other pattern revealed no change in diastolic pressure, although systolic pressure increased significantly to similar levels as measured in the office. The prevalence of hypertensive or atherosclerotic cardiovascular complications in the patients with the first pattern was significantly less than in the group of patients with the second pattern (chi square, P less than 0.025). The data reported herein indicate that ambulatory blood pressure monitoring may help in the overall clinical evaluation of elderly patients with hypertension.