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全自动无创性的动态血压监测方法

时间:2023-03-16 理论教育 版权反馈
【摘要】:无创性全自动动态血压监测技术可用于简便的BPV研究。ABPM监测仪器在临床已经普及,已成为临床进行血压动态监测最常用的方法之一。采用标准袖带,常规缚于上肢,定时给袖带充气,测量肱动脉血压,并与动态血压监测仪连接,自动存储数据。1.标准差方法 此方法以测定的24h血压平均值为基准,把各实测血压值与该基准值间的标准差作为血压波动的值。受试者可以在日常活动不受影响的情况下,动态监测24h血压的变化。

无创性全自动动态血压监测技术(ambluatory blood pressure monitoring,ABPM)可用于简便的BPV研究。即采用每半小时或20min测一次血压的方法,监测24h血压,算出粗略的BPV数据,也有一定的参考价值。ABPM监测仪器在临床已经普及,已成为临床进行血压动态监测最常用的方法之一。

(一)血压监测方法

采用标准袖带,常规缚于上肢,定时给袖带充气,测量肱动脉血压,并与动态血压监测仪连接,自动存储数据。在24h内可以存储200多个血压值。目前临床最常用的方法是,白天(从6:00~22:00)每隔15~30min测一次血压,夜间(从22:00至次日6:00)每隔30~60min测定一次血压。这样24h可以测定36~72次收缩压、舒张压等指标。

(二)用ABPM监测数据计算BPV的方法

1.标准差方法 此方法以测定的24h血压平均值为基准,把各实测血压值与该基准值间的标准差作为血压波动的值。缺点是:不能区分具有相同振幅、相同平均值的血压平滑曲线和齿状曲线。即无法将生理性的血压昼夜节律变化与那些突发性、无规律的血压波动区分开。由于该方法操作简单,且安装在ABPM的操作系统中,是目前临床最常用的方法。

2.加权标准差法 考虑到血压昼夜节律变化和日、夜间血压对BPV所占的比重及其测量时间上的差异,在标准差法的基础上,通过加权计算,人为将日、夜间血压波动进行比例分配,将血压变化的标准值分为日间和夜间两个标准值,同时去除血压晨峰现象最常出现的6:00~8:00(2h)和夜间血压下降明显的时间段22:00~24:00(2h),以减少血压日高夜低和晨峰现象对血压波动的影响。采用公式

进行BPV计算。

3.平均血压变化测定法 该方法是用数学公式:

来计算血压波动的方法。

4.血压快速波动测量法 近来应用数学平滑曲线方法,通过公式:

对所测血压数据进行处理,首先获得符合每一个体血压变化的“趋势曲线”,随后计算实际测定的血压值与其趋势曲线间标准差的值来表示血压波动的大小的方法。

(三)评价

受试者可以在日常活动不受影响的情况下,动态监测24h血压的变化。与偶测血压相比,它能反映各个测量时间点的血压状况,可以对血压昼夜变化的规律、突发的、无规则的血压变化有所记录。由于袖带频繁充气、放气,会影响患者休息和被测肢体的活动,所测肢体的位置不当也会干扰测量结果,导致测量数值不准确。该方法只能每隔一段时间进行测量,不能反映连续、不间断的血压变化情况。

(段俊丽 苏定冯)

参考文献

[1] Collins R,Peto R,MacMahon S,et al.Blood pressure,stroke,and coronary heart disease.Part 2,Short-term reductions in blood pressure:overview of randomised drug trials in their epidemiological context.Lancet,1990,335:827-838

[2] SHEP Cooperative Research Group.Prevention of stroke by antihypertensive drug treatment in older persons with isolated systolic hypertension.Final results of the Systolic Hypertension in the Elderly Program(SHEP).JAMA,1991,265:3255-3264

[3] Staessen JA,Fagard R,Thijs L,et al.Randomised double-blind comparison of placebo and active treatment for older patients with isolated systolic hypertension.Lancet,1997,350:757-764

[4] Wang JG,Staessen JA,Gong L,et al.Chinese trial on isolated systolic hypertension in the elderly.Arch Intern Med,2000,160:211-220

[5] Staessen JA,Gasowski J,Wang JG,et al.Risks of untreated and treated isolated systolic hypertension in the elderly:meta-analysis of outcome trials.Lancet,2000,355:865-872

[6] Blacher J,Staessen JA,Girerd X,et al.Pulse pressure not mean pressure determines cardiovascular risk in older hypertensive patients.Arch Intern Med,2000,160:1085-1089

[7] Franklin SS,Larson MG,Khan SA,Wong ND,Leip EP,Kannel WB,Levy D.Does the relation of blood pressure to coronary heart disease risk change with aging?The Framingham Heart Study.Circulation,2001,103:1245-1249

[8] Lewington S,Clarke R,Qizilbash N,et al.Age-specific relevance of usual blood pressure to vascular mortality:a meta-analysis of individual data for one million adults in 61prospective studies.Lancet,2002,360:1903-1913

[9] Miura K,Soyama Y,Morikawa Y,et al.Comparison of four blood pressure indexes for the prediction of 10-year stroke risk in middle-aged and older Asians.Hypertension,2004,44:715-720

[10]Williams B,Lindholm LH,Sever P.Systolic pressure is all that matters.Lancet,2008,371:2219-2221

[11]Franklin SS,Lopez VA,Wong ND,et al.Single versus combined blood pressure components and risk for cardiovascular disease.The Framingham Heart Study.Circulation,2009,119:243-250

[12]Messerli FH,Mancia G,Conti CR,et al.Dogma disputed:Can aggressively lowering blood pressure in hypertensive patients with coronary artery disease be dangerous?Ann Intern Med,2006,144:884-893

[13] Berl T,Hunsicker LG,Lewis JB,et al.Impact of achieved blood pressure on cardiovascular outcomes in the Irbesartan Diabetic Nephropathy Trial.J Am Soc Nephrol,2005,16:2170-2179

[14]Rosendorff C,Black HR,Cannon CP,et al.Treatment of hypertension in the prevention and management of ischemic heart disease:a scientific statement from the American Heart Association Council for High Blood Pressure Research and the Councils on Clinical Cardiology and Epidemiology and Prevention.Circulation,2007,115:2761-2788

[15]Bevan AT,Honour AJ,Stott FH.Direct arterial pressure recording in unrestricted man.Clin Sci,1969,36:329

[16]Parati G,Pomidossi G,Albini F,et al.Relationship of 24hblood pressure mean and variability to severity of target organ damage.J Hypertens,1987,5:93

[17]Su DF,Miao CY.Blood pressure variability and organ damage.Clin Exp Pharmacol Physiol,2001,28:709

[18]苏定冯,程勇.血压波动性的神经体液调控.生理科学进展,1991,22:271-272

[19]Mancia G,Parati G,Hennig M,et al.Relation between blood pressure variability and carotid artery damage in hypertension:baseline data from the European Lacidipine Study on Atherosclerosis.J Hypertens,2001,19:1981

[20]Parati G,Bosi S,Castellano M,et al.Guidelines for 24hnoninvasive ambulatory blood pressure monitoring.Report from a working group of the Italian Society of Hypertension.High Blood Press,1995,4:168

[21]Astrup AS,Nielsen FS,Rossing P,et al.Predictors of mortality in patients with type 2 diabetes with or without diabetic nephropathy:a follow-up study.J Hypertens,2007,25:2479

[22]Imai Y,Aihara A,Ohkubo T,et al.Factors that affect blood pressure variability.A community-based study in Ohasama,Japan.Am J Hypertens,1997,10:1281

[23]Su DF,Miao CY.Reduction of blood pressure variability:a new strategy for the treatment of hypertension.Trends Pharmacol Sci,2005,26:388

[24]Biloa G,Giglio A,Styczkiewicz K,et al.A new method for assessing 24hblood pressure variability after excluding the contribution of nocturnal blood pressure fall.J Hypertens,2007,25:2058

[25]Sakai M,Tanaka Y.Analysis of factors that affect short-term blood pressure variability in patients with chronic renal failure.Clin Exp hypertens,2005,27:139

[26]Frattola A,Parati G,Cuspidi C,et al.Prognostic value of 24-hour blood pressure variability.J Hypertens,1993,11:1133

[27]Sander D,Kukla C,Klingelhofer J,et al.Relationship between circadian blood pressure patterns and progression of early carotid atherosclerosis:A 3-year follow-up study.Circulation,2000,102:1536

[28]Voogel AJ,van Montfrans GA.Reproducibility of twenty-four-hour finger arterial blood pressure,variability and systemic hemodynamics.J Hypertens,1997,15:1761

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