原发性高血压患者左心室功能障碍与血清脑利钠肽水平的研究

目的　探讨原发性高血压 (EH)患者左心室功能障碍 (LVD)与血清脑利钠肽 (BNP)水平的关系。方法用酶联免疫吸附法 (ELISA)方法检测 65例EH患者的血清BNP 3 2浓度 ,分为 4组 ,第 1组 :左心室功能正常且无左心室肥厚 (LVH) 18例 ;第 2组 :左心室功能正常但有LVH 16例 ;第 3组 :有LVD但无LVH 15例 ;第 4组 :即有LVH也有LVD 16例 ;并与健康成人3 0例作为正常对照组。结果　 (1) 1～ 4组、对照组的BNP水平分别为 (112 .8± 3 6 5)ng/L、(114 8± 41 2 )ng/L、(82 5 6±3 16 8)ng/L、(83 9 6± 3 4 2 4)ng/L和 (10 9 3± 3 7 6)ng/L。 3组和 4组的BNP水平分别显著高于 1组、2组与对照组 ,差异有显著性 (P <0 0 1) ;1组和 2组与对照组、1组与 2组、3组与 4组比较差异无显著性 (P >0 0 5)。 (2 )LVD患者中BNP水平在心功能不同分级之间有显著差异 ,与NYHA分级呈正相关 (r=0 73 5,P <0 0 1)。 (3 )血清BNP水平与EH患者年龄、性别、收缩压、舒张压、脉压、左室重量指数之间无明显相关。结论　高血压病合并左心室功能障碍的病人血清BNP水平显著升高而且与心功能分级呈正相关 ,而与左心室肥厚无关     

原发性高血压患者左心室功能障碍与血清脑利钠肽水平的研究

目的探讨原发性高血压(EH)患者左心室功能障碍(LVD)与血清脑利钠肽(BNP)水平的关系.方法用酶联免疫吸附法(ELISA)方法检测65例EH患者的血清BNP-32浓度,分为4组,第1组左心室功能正常且无左心室肥厚(LVH)18例;第2组左心室功能正常但有LVH 16例;第3组有LVD但无LVH 15例;第4组即有LVH也有LVD 16例;并与健康成人30例作为正常对照组.结果 (1)1～4组、对照组的BNP水平分别为(112.8±36.5) ng/L、(114.8±41.2)ng/L、(825.6±316.8)ng/L、(839.6±342.4)ng/L和(109.3±37.6)ng/L.3组和4组的BNP水平分别显著高于1组、2组与对照组,差异有显著性(P<0.01);1组和2组与对照组、1组与2组、3组与4组比较差异无显著性(P>0.05).(2)LVD患者中BNP水平在心功能不同分级之间有显著差异,与NYHA分级呈正相关(r=0.735,P<0.01).(3)血清BNP水平与EH患者年龄、性别、收缩压、舒张压、脉压、左室重量指数之间无明显相关.结论高血压病合并左心室功能障碍的病人血清BNP水平显著升高而且与心功能分级呈正相关,而与左心室肥厚无关.     

急性心肌梗死后螺内酯干预对左室重构的影响

目的　探讨急性心肌梗死(AMI)患者应用螺内酯干预对于左室重构(LVRM)的影响。方法　4家医院共入选AMI患者88例,采用多中心、随机、对照的方法,对46例AMI患者在常规治疗的基础上加用螺内酯40mg/d(螺内酯组),对照组(n=42)常规治疗。在6个月干预期内检测两组血清Ⅲ型前胶原氨基端肽(PⅢNP)、脑钠肽(BNP)及超声心动图,以评价左室纤维化、左室功能和左室容积。结果　88例中,急性前壁心肌梗死患者43例,螺内酯组23例、对照组20例;急性下壁心肌梗死患者45例,螺内酯组23例、对照组22例。急性前壁心肌梗死组在治疗3、6个月时螺内酯组与对照组相比,血清PⅢNP和BNP明显降低[PⅢNP分别为( 260 .2±59. 9 )ng/L比( 328 .0±70 .3 )ng/L, P=0 .001, ( 197 .1±46 .3 )ng/L比( 266. 7±52 .4 )ng/L, P<0. 001 ,BNP分别为( 347 .4±84 .0)ng/L比(430 .1±62 .9)ng/L, P<0 .001, (243 .7±79. 7)ng/L比(334. 6±62. 8)ng/L, P<0. 001]。治疗6个月时螺内酯组较对照组左室舒张末期内径、左室收缩末期内径明显降低[分别为(51. 0±5 .5)mm比(55. 6±4 .5)mm, P=0 .005, (35 .7±4 .6)mm比(39 .1±5 .6)mm, P=0 .046]。急性下壁心肌梗死组在治疗6个月时螺内酯组与对照组相比血清PⅢNP、BNP水平无统计学意义,(P>0 05),并且左     

左心室舒张功能不全血清脑钠肽的改变及缬沙坦干预的作用

目的　探讨左心室(左室)舒张功能不全患者血清脑钠肽(BNP)水平改变和诊断价值,以及缬沙坦干预的作用。方法　用酶联免疫法测定30例单纯左室舒张功能不全患者(LVDD组)、20例左室收缩功能不全伴或不伴舒张功能不全患者(LVSD组)、20例心功能正常者(对照组)以及LVDD组缬沙坦干预10周后的血清BNP浓度。结果　LVDD组BNP水平明显高于对照组(186. 9pg/ml±125. 1pg/ml对68. 9pg/ml±29. 3pg/ml,P<0. 05),但明显低于LVSD组(186. 9pg/ml±125. 1pg/ml对879. 3pg/ml±453. 2pg/ml,P>0. 05 )。若左室收缩功能正常,BNP>120pg/ml判断单纯LVDD的敏感度为86. 7%,特异度为95%,阳性预告值为96. 3%,阴性预告值为82. 6%。缬沙坦治疗LVDD10周对BNP水平尚无明显影响(150. 1pg/ml±87. 5pg/ml对145. 9pg/ml±80. 2pg/ml,P>0. 05)。结论　血清BNP浓度在单纯LVDD患者亦明显升高,并有较好的诊断价值,缬沙坦治疗LVDD患者10周对BNP水平尚无明显影响。     

冠心病不同类型间斑块稳定性相关指标的比较研究

目的　比较血清抗氧化低密度脂蛋白 (oxLDL)抗体、细胞间黏附分子 1(ICAM 1)、血管细胞黏附分子 1(VCAM 1)和E 选择素水平对不同类型冠心病斑块稳定性的评价意义。方法　用酶联免疫吸附法 (ELISA)检测了 10 0例冠心病患者 (17例急性心肌梗死 ,4 1例不稳定性心绞痛 ,4 2例稳定性心绞痛 )及 31例正常健康对照者血清ICAM 1、VCAM 1、E 选择素和血清抗oxLDL抗体水平 ,并比较上述各指标水平与不同类型冠心病斑块稳定性之间的关系。结果　血清ICAM 1水平在急性心肌梗死组 (76 4± 111)ng/ml和不稳定性心绞痛组 (70 9± 10 0 )ng/ml明显高于稳定性心绞痛组 (6 0 7± 83)ng/ml,和正常对照组 (6 0 3± 90 )ng/ml,P <0 0 1;血清VCAM 1水平在急性心肌梗死组 (185 5± 6 6 6 )ng/ml和不稳定性心绞痛组 (172 4± 5 5 5 )ng/ml明显高于稳定性心绞痛组 (136 0± 36 0 )ng/ml,和正常对照组 (10 39± 319)ng/ml,P <0 0 1;血清E 选择素水平在急性心肌梗死组 (5 4± 19)ng/ml和不稳定性心绞痛组 (5 3± 2 2 )ng/ml明显高于稳定性心绞痛组 (39± 19)ng/ml,和正常对照组 (38± 14 )ng/ml,P <0 0 5 ;血清抗oxLDL抗体水平在急性心肌梗死组 (1 39± 0 6 8)和不稳定性心绞痛组 (1 35± 0 6 2 )明显高于稳定性心绞痛组 (0     

血浆B型钠尿肽对高血压病左心室重构的影响

目的初步观察高血压不同左心室构型与血浆B型钠尿肽水平的关系,探讨高血压病左心室重构的可能机制。方法150例未经正规治疗的高血压患者根据超声心动图检查结果分为4个亚组:(1)正常构型组(29例);(2)向心性重构型组(44例);(3)向心性肥厚型组(42例);(4)离心性肥厚型组(35例),另设对照组(30例)。干式快速免疫荧光法测定BNP浓度。结果(1)高血压病组的BNP水平显著高于正常对照组〔(80±46)pg/m l,(53±29)pg/m l,P<0.05)〕;向心性与离心性肥厚组的BNP水平均明显升高,且显著高于其他三组(P<0.05),但两肥厚组间无统计学差异(P>0.05);高血压正常构型与向心性重构型组的BNP水平虽高于正常对照组,但无统计学差异(P>0.05)。(2)血浆BNP与左室质量指数(LVM I)、左心室室壁相对厚度(RWT)、室间隔厚度(IVST)和左室后壁舒张末期厚度(LVPWT)呈显著正相关。结论BNP参与高血压病左心室重构形成,BNP水平可为高血压病左室肥厚的诊断和逆转提供客观的指标。     

多普勒超声心肌作功指数评价氯沙坦钾对老年高血压患者左室功能的作用

目的 :应用多普勒超声指标心肌作功指数 (MPI)评价氯沙坦钾对老年原发性高血压 (EH)患者左室功能的作用。方法 :38例老年EH患者 ,按照超声心动图左室肥厚 (LVH)的诊断标准分成无LVH(2 8例 )和LVH(10例 )两组 ,给予氯沙坦钾 5 0mg每日 1次口服 ,疗程 2 4周。治疗前后多普勒超声心动图测定左室室壁厚度和收缩、舒张功能 ,根据等容舒张期时间 (IRT)和等容收缩期时间 (ICT)之和与射血时间 (ET)的比值计算MPI。结果 :LVH组患者经氯沙坦钾治疗后左室重量指数 (LVMI)降低 ,但差异无统计学意义。两组患者射血分数 (EF)治疗前后均在正常范围 ,经氯沙坦钾治疗后IRT均显著缩短 [(12 0 .4 6± 2 3.84 )ms∶(96 .4 6± 2 3.19)ms;(12 5 .4 0± 2 5 .81)ms∶(92 .5 6± 2 9.98)ms,P <0 .0 1],MPI降低 [(0 .6 1± 0 .14 )∶(0 .4 4± 0 .12 ) ,P <0 .0 1;(0 .6 0± 0 .14 )∶(0 .4 7± 0 .13) ,P <0 .0 5 ]。MPI与IRT呈正相关 (r =0 .80 ,P <0 .0 1) ,与LVMI不相关 (r =- 0 .0 95 ,P >0 .0 5 )。结论 :氯沙坦钾能提高老年EH患者的左室功能。MPI综合反映心脏的收缩和舒张功能 ,其不受左室构型的影响 ,在高血压患者收缩功能正常的情况下是反映早期左心功能不全的指标。     

原发性高血压患者血清基质金属蛋白酶9及其抑制因子水平

目的　研究原发性高血压患者血清中基质金属蛋白酶 9(MMP— 9)及其抑制剂 ,金属蛋白酶组织抑制因子 1(TIMP— 1)水平的变化和左室肥厚的关系。方法　用酶联免疫吸附法对 4 0例经治疗或未治疗的原发性高血压患者进行血清MMP— 9和TIMP— 1水平测定 ,与 2 8例健康对照组进行比较。并对高血压患者进行心脏彩色多谱勒检查 ,计算左室重量指数。结果　 1、高血压组血清MMP - 9较正常对照组明显降低(2 96 38± 15 9 2 3ng ml-1、4 99 6 2± 334 80ng ml-1,P <0 0 0 1)而TIMP - 1水平较正常对照组明显升高 (35 5 99± 114 95ng ml-1、2 0 5 4 5± 38 77ng ml-1,P <0 0 0 1) ;2、高血压心肌肥厚组与无肥厚组MMP - 9无显著性差异(332 71± 186 70ng ml-1、2 82 5 9± 14 9 10ng ml-1,P >0 0 5 ) ,但TIMP - 1水平心肌肥厚组明显升高 (491 2 7±75 0 3ng ml-1,2 98 4 7± 4 2 98ng ml-1P <0 0 0 1)。结论　原发性高血压患者存在基质金属蛋白酶 - 9及其抑制剂 - 1代谢异常 ,血清TIMP - 1水平可能成为反映高血压左室肥厚的指标。     

老年冠心病和扩张型心肌病患者心力衰竭时血清可溶性细胞间黏附分子的检测

目的　观察老年冠心病和扩张型心肌病患者心力衰竭时血清黏附分子的变化。方法　采用固相酶联免疫吸附试验的夹心法 ,分别测定 38例冠心病心力衰竭和 16例扩张型心肌病 (DCM)心力衰竭时血清可溶性细胞间黏附分子 1(sICAM 1)和E 选择素。同时以同期 33例健康者作为对照组。结果　血清sICAM 1在冠心病组 (5 .6 0±0 .78)ng ml和DCM组 (5 .5 3± 0 .74 )ng ml均高于健康对照组 (4.0 1± 0 .39)ng ml;血清E 选择素在冠心病组 (44 .2 1±2 9.31)ng ml和DCM组 (43.80± 2 5 .6 6 )ng ml亦高于健康对照组 (2 3.4 2± 15 .84 )ng ml ,且心功能Ⅳ级组血清sICAM 1和E 选择性水平均高于心功能Ⅱ级组。结论　血清sICAM 1和E 选择素水平在心力衰竭时均升高 ,可能与动脉粥样硬化无明显相关 ;但可预示心力衰竭的严重性     

高血压病人不同左心室构型与血浆B型钠尿肽及Ⅲ型前胶原的相关性

目的研究血浆B型钠尿肽(BNP)及血清Ⅲ型前胶原(PCⅢ)对高血压病左心室重构不同构型的影响。方法入选高血压病组127例,血压正常对照组30例,高血压病组根据超声心动图检查结果分为4个亚组:(1)正常构型组(25例);(2)向心性重构型组(38例);(3)向心性肥厚型组(36例);(4)离心性肥厚型组(28例)。用放免法测定PCⅢ浓度,干式快速免疫荧光法测定BNP浓度。结果(1)高血压病组的BNP和PCⅢ水平均显著高于正常对照组[BNP:(80±44比53±29)pg/mL;PCⅢ:(99·9±47·4比76·4±31·6)μg/L,P<0·05];高血压病4个亚组的BNP与PCⅢ水平分别为:BNP:(61±27,64±26,102±54,93±43)pg/mL;PCⅢ:(82·6±35·1,86·1±32·5,113·7±58·8,116·2±49·5)μg/L。向心性与离心性肥厚组的BNP与PCⅢ水平均明显升高,显著高于正常对照组、高血压正常构型组和向心性重构型组(均P<0·05);(2)血浆BNP与血清PCⅢ、左室质量指数(LVMI)、左心室室壁相对厚度(RWT)、室间隔厚度(IVST)和左室后壁舒张末期厚度(LVPWT)显著正相关;血清PCⅢ与LVMI、RWT、IVST和LVPWT亦显著正相关。结论血清PCⅢ和血浆BNP水平升高均与高血压病左心室重构有关,临床上检测PCⅢ和BNP水平有助于尽早发现高血压病左室肥厚,并为左室肥厚提供客观的监测指标。     

脑钠肽与高血压左室重塑、左室功能的关系

目的:探讨原发性高血压(EH)患者脑钠肽(BNP)水平与左室几何构型、左室功能的关系。方法:应用荧光免疫法快速测定EH组(106例)和对照组(46例)的血浆BNP浓度,根据心脏彩色超声检测结果,依照左室重量指数(LVMI)、相对室壁厚度(RWT)将106例EH患者分为:正常构型亚组(12例)、向心性重构亚组(9例)、离心性肥厚亚组(64例)、向心性肥厚亚组(21例)。应用相关性分析了解EH组LVMI、RWT、年龄、血压、体质指数(BMI)、左室射血分数(LVEF)等因素与BNP关系。结果:在EH各构型亚组中LVMI以离心性肥厚亚组最高,向心性肥厚亚组、离心性肥厚亚组BNP水平较对照组升高明显。EH组LVMI与BNP具有明显的正相关性(r=0.605,P<0.01),RWT与BNP具有明显的负相关(r=-0.266,P<0.01),LVEF与BNP呈负相关(r=-0.552,P<0.01),LVMI、RWT与血压、BMI之间无明显相关性。结论:EH组中不同的左室几何构型对BNP水平产生不同影响,具有更高的LVMI值和更低的LVEF、RWT值患者,BNP水平更高,而年龄、血压、BMI与BNP、LVMI、RWT无明显相关性。     

Relationship between left ventricular geometry and brain natriuretic peptide levels in elderly subjects

BACKGROUND: The plasma brain natriuretic peptide (BNP) level in elderly patients is elevated, but the mechanism of this increase is not clear. OBJECTIVE: To examine the relationship between left ventricular geometry and BNP levels in elderly subjects. METHODS: We investigated the effects of left ventricular (LV) geometry on plasma BNP levels by measuring these levels in elderly patients with or without LV hypertrophy. Patients were classified into 4 groups based on echocardiographic data: normal geometry; concentric remodeling; eccentric hypertrophy (EH), and concentric hypertrophy (CH). The samples were analyzed for BNP and endothelin-1 (ET-1). RESULTS: Among the 4 groups, there were no differences in plasma ET-1 levels, ejection fraction, percent fractional shortening, or indices of diastolic function. Plasma BNP levels in EH and CH were higher than those in the normal geometry and concentric remodeling groups. There was a good correlation between plasma BNP levels and the relative wall thickness in EH, and between plasma BNP levels and the posterior wall thickness in CH (r = -0.474, r = 0.396, respectively, both p < 0.05). There were also good correlations between plasma BNP levels and LV mass index (LVMI). A stepwise multiple regression analysis showed that age and LVMI were significant independent contributors to plasma BNP levels. CONCLUSIONS: These results suggest that aging, increased wall stress and the extent of cardiac hypertrophy contribute to elevated BNP levels in the elderly.     

氯沙坦对高血压左室肥厚患者血浆脑钠肽的影响

目的：研究氯沙坦干预对高血压伴左室肥厚患者脑钠肽（BNP）的影响及意义。方法：选择100例左室射血分数正常范围的高血压患者,其中58例伴左室肥厚,42例不伴左室肥厚,另选50例健康者作为健康对照组,比较三组间血浆BNP水平。左室肥厚组给予氯沙坦治疗6个月,比较治疗前后BNP、左室质量指数（LVMI）的变化。结果：①高血压伴左室肥厚患者BNP浓度显著高于不伴左室肥厚组及健康对照组[（62．21±9．70）pg／ml比（39．35±10．57）pg／ml比（13．89±5．34）pg／ml,P〈0．01];②BNP的浓度与LVMI呈正相关（r=0．44,P〈0．05）;③与治疗前比较,氯沙坦治疗高血压伴左室肥厚6个月后,血浆BNP[（62．21±9．70）pg／ml比（38．78±7．94）pg／m1]、LVMI[（128．71±12．64）g／m。比（107．36±11．32）g／m。]均显著降低（P〈o．01）。结论：氯沙坦可明显降低高血压伴左室肥厚患者脑钠肽水平,逆转左室肥厚。     

Correlation between serum miR-122 and myocardial damage and ventricular function in patients with essential hypertension

BackgroundMyocardial damage and decreased ventricular function are risk factors leading to a bad prognosis in patients with essential hypertension (EH). MicroRNAs play important roles in myocardial function impairment in patients with hypertension. The purpose of our research was to investigate the correlation between serum miR-122 and myocardial damage and ventricular functions in EH patients.MethodsThe clinic data of EH patients (group A, n=60) and healthy individuals (group B, n=60) from December 2016 to December 2019 in our hospital were collected and analyzed. Serum miR-122, myocardial damage markers [B-type brain natriuretic peptide (BNP), homocysteine (Hcy), cardiac troponin T (cTnT) and creatine kinase MB isoenzyme (CK-MB)] and cardiac function indicators [ejection fraction (EF), left ventricular septal thickness (IVST), left ventricular isovolumic relaxation time (IVRT), left ventricular end-diastolic diameter (LVEDD), left ventricular posterior wall thickness (LVPWT), and left ventricular end-systolic diameter (LVESD)] were assessed in both groups. The correlation between serum miR-122 and myocardial damage markers and ventricular function indicators was analyzed.Results(I) The mean serum miR-122 concentration in group A and group B was 6.86±1.23 and 3.36±1.87 µmol/L, respectively. The serum miR-122 concentration in group A was evidently increased compared with that in group B. (II) The levels of BNP, Hcy, cTnT, and CK-MB in the peripheral blood in group A were evidently increased compared with those in group B (P<0.05). (III) EF and IVRT were evidently decreased in group A compared with that in group B (P<0.05). (IV) Serum miR-122 concentration was positively correlated with the myocardial damage markers BNP, Hcy, cTnT and CK-MB, and serum miR-122 concentration was negatively correlated with the ventricular function indicators EF and IVRT but not significantly correlated with other ventricular function indicators (IVST, LVEDD, LVPWT and LVESD).ConclusionsThe serum miR-122 concentration in EH patients was higher than that in healthy individuals, and miR-122 concentration was positively correlated with myocardial damage markers. Serum miR-122 level was negatively correlated with the ventricular function indicators EF and IVRT but was not significantly correlated with other ventricular function indicators (IVST, LVEDD, LVPWT, and LVESD).     

高血压患者左室构型改变与左心舒张功能

目的探讨高血压患者不同左室构型改变与左心舒张功能的关系。方法应用超声心动图和定量组织速度成像技术检测109例原发性高血压患者和26例对照组左心结构及舒张功能各项指标。按照Ganau分类法将高血压患者左室构型分为正常左室构型(A)、向心性重构(B)、向心性肥厚(C)、离心性肥大(D)4种构型,并与对照组(N)比较,对各项指标进行单因素方差分析。结果高血压B、C、D组等容舒张时间(IVRT)延长,后间隔基底段(PS Bas)[N:(84.8±23.4),B:(118.9±34.6),C:(133.1±34.6),D:(161.9±62.5)ms,P<0.05];等容舒张期峰值速度(VIR)B、C组和A组的多数节段高于对照组;对照组16.3%节段出现等容舒张期正向波,83.7%为负向波,高血压组64%节段出现等容舒张期正向波,36%为负向波;快速充盈期心肌沿长轴的峰值速度(Ve)高血压组均低于对照组;B、C两组Ve/Va减低。高血压组左房径均大于对照组,B、C、D组逐渐增大。二尖瓣口血流频谱B、C两组VE/VA<1,而在D组VE/VA>1。结论不同左心室构型高血压患者的左心舒张功能均有减低。应用QTVI能够检出二尖瓣血流频谱VE/VA正常的舒张功能异常,并能检测出等容舒张期局部心肌的异常活动,较频谱多普勒更加敏感。     

高血压左心室肥厚患者结缔组织生长因子和B型钠尿肽的变化及临床意义

目的观察原发性高血压左心室肥厚(left ventricular hypertrophy,LVH)患者结缔组织生长因子(CTGF)及B型钠尿肽(BNP)含量的变化并探讨其临床意义。方法选择120例高血压患者,分为LVH组62例和未合并LVH组(NLVH组)58例,另选择健康体检者30例为对照组。采用酶联免疫吸附法测定血清CTGF和血浆BNP的含量。采用彩色多普勒超声检查各组心脏舒张期室间隔厚度、左心室后壁厚度、左心室舒张末内径及LVEF。结果与对照组比较,NLVH组患者左心室质量指数明显升高(P<0.01),血清CTGF和血浆BNP比较,差异无统计学意义(P>0.05);LVH组血清CTGF和血浆BNP含量及左心室质量指数均明显升高,差异有统计学意义(P<0.01),且血清CTGF和血浆BNP含量与左心室质量指数呈正相关(r=0.51,r=0.64,P<0.01),NLVH组血清CTGF和血浆BNP含量与左心室质量指数比较差异无统计学意义(P>0.05)。结论血清CTGF和血浆BNP含量监测,对高血压LVH患者的诊治和预后判断具有重要临床意义。     

B型脑利钠肽和Tei指数在高血压早期左心室舒张功能不全诊断中的意义

目的探讨B型脑利钠肽(BNP)与Tei指数在评价原发性高血压左心室舒张功能不全中的意义。方法选择高血压患者83例,分为高血压伴左心室舒张功能不全组(DHF组,35例),高血压无心力衰竭组(NHF组,48例),另选健康体检者20例作为对照组。化学发光法检测BNP,超声心动图检测各个参数,并计算左心室Tei值。结果DHF组Tei指数、BNP明显高于NHF组和对照组(P<0.01),NHF组Tei指数、BNP也明显高于对照组(P<0.05,P<0.01)。BNP法诊断敏感性、特异性明显好于Tei指数法,差异有统计学意义(P<0.05)。结论BNP和Tei指数均为诊断高血压早期舒张功能不全的敏感指标,且BNP法较Tei指数法更为高效、准确。     

QT dispersion and left ventricular geometry in hypertensive patients

It has been shown that increased QT dispersion (QTd) reflects electrical inhomogeneity of the myocardium and is associated with high incidence of ventricular arrhythmias. In some cases increased QTd has also been found in some hypertensive patients with left ventricular hypertrophy. The aim of the study was to investigate the relation between QTd and left ventricular (LV) geometry in hypertensive patients (pts). Studied group consisted of 80 pts aged 52.5 +/- 12.6 yrs with mild, moderate and severe hypertension. Nineteen healthy subjects aged 50.5 +/- 9.6 yrs served as control group. QTd was calculated as a difference between the longest QT and shortest QT from the 12-leads of the standard electrocardiogram. Each subject underwent echocardiographic study to determine the pattern of LV geometry divided into: normal (NG), concentric remodeling (CR), excentric hypertrophy (EH) and concentric hypertrophy (CH). Significantly higher QTd was found out in pts with CH and EH as compared to CG (respectively 61 +/- 10 ms, 69 +/- 15 ms vs 46 +/- 14 ms, p < 0.01). Moreover, pts with CH had higher QTd than NG (69 +/- 15 ms vs 55 +/- 15 ms, p < 0.01). CONCLUSION: QTd is related to the pattern of LV geometry. As compared to healthy subjects it is increased in hypertensive pts with concentric and eccentric hypertrophy. In pts with CH QTd is significantly greater than in hypertensive pts with normal geometry.     

原发性高血压患者动态血压节律异常对利钠肽及左室质量的影响

目的:评价原发性高血压(EH)患者动态血压节律异常对利钠肽及左室质量的影响.方法:根据24 h动态血压结果将65例EH患者分为杓形高血压组与非杓形高血压组,分别进行了血心房利钠肽(ANP)、脑钠肽(BNP)及超声心动图测定.结果:杓形高血压组与非杓形高血压组的ANP、BNP及左室质量指数(LVMI)均显著高于对照组(P<0 01);其中非杓形高血压组显著高于杓形高血压组(P<0 01);且ANP、BNP浓度与LVMI呈正相关(R=0 45,0 67;P< 0 01).结论:EH患者血压昼夜节律异常者,心脏ANP分泌增加,与LVMI呈正相关性.     

细胞因子与高血压病患者左室构型的相关性研究

目的观察高血压病患者细胞因子的变化及与左室构型改变的相关性。方法采用酶联免疫吸附测定法检测60例高血压病患者(高血压组)和20例正常对照组血清炎性细胞因子浓度,并应用彩色多普勒超声心动图测定其左心室重量指数(LVMI)、相对室壁厚度(RWT)分析左室构型改变与细胞因子相关性。结果与正常对照组比较,高血压组左室不同构型组的血清细胞因子含量明显升高,高血压组中正常构型组与其他构型组的血清细胞因子含量比较也有明显差异,高血压组LVMI与肿瘤坏死因子α(TNFα)、白细胞介素6呈正相关,RWT与TNFα呈正相关。结论细胞因子的过度激活与高血压病患者左室构型改变密切相关,在心肌重构发生发展中起着重要的作用。