中华超声影像学杂志
中華超聲影像學雜誌
중화초성영상학잡지
CHINESE JOURNAL OF ULTRASONOGRAPHY
2015年
3期
185-190
,共6页
狄明雪%刘艳%徐明俊%蒋桂花%张运%张梅
狄明雪%劉豔%徐明俊%蔣桂花%張運%張梅
적명설%류염%서명준%장계화%장운%장매
超声心动描记术%高血压%心室功能,左%血流向量成像
超聲心動描記術%高血壓%心室功能,左%血流嚮量成像
초성심동묘기술%고혈압%심실공능,좌%혈류향량성상
Echocardiography%Hypertension%Ventricular function,left%Vector flow mapping
目的 应用血流向量成像(VFM)技术评价高血压患者左心室血流动力学变化,探讨血流改变与左心室功能的关系.方法 选取高血压组28例和正常对照组26例,分析速度向量图、流线图、涡量图的变化特征,定量测量各时相各节段涡量的演变规律及组间差异.利用双功能多普勒技术获取二尖瓣舒张早期峰值速度(E)、舒张晚期峰值速度(A)、E波减速时间(EDT)、二尖瓣环侧壁舒张早期峰值速度(e'),计算E/A、E/e',与涡量进行相关性分析.结果 ①与对照组比较,高血压组左心室收缩及舒张末容积增加(P＜0.05),速度向量图、流线图、涡量图均欠规则.③正常对照组舒张中期呈现中间段＞基底段＞心尖段的趋势(P＜0.05),高血压组舒张中期心尖段涡量最小(P＜0.05),但基底段与中间段差异无统计学意义(P＞0.05),两组其余时相由基底段到心尖段均逐渐降低(P＜0.01).④与正常对照组比较,高血压组心尖段舒张早期及舒张晚期、中间段收缩晚期涡量增大(P=0.045,P=0.004,P=0.015).⑤舒张晚期心尖段、中间段及基底段的涡量与E/A负相关(r=-0.310,-0.334,-0.333;P=0.028,0.020,0.021),等容收缩期心尖段涡量与E/e'正相关(r=0.348,P=0.016).结论 VFM技术可直观反映高血压病患者左室血流动力学变化,涡量与心脏舒张功能的评价指标相关.
目的 應用血流嚮量成像(VFM)技術評價高血壓患者左心室血流動力學變化,探討血流改變與左心室功能的關繫.方法 選取高血壓組28例和正常對照組26例,分析速度嚮量圖、流線圖、渦量圖的變化特徵,定量測量各時相各節段渦量的縯變規律及組間差異.利用雙功能多普勒技術穫取二尖瓣舒張早期峰值速度(E)、舒張晚期峰值速度(A)、E波減速時間(EDT)、二尖瓣環側壁舒張早期峰值速度(e'),計算E/A、E/e',與渦量進行相關性分析.結果 ①與對照組比較,高血壓組左心室收縮及舒張末容積增加(P＜0.05),速度嚮量圖、流線圖、渦量圖均欠規則.③正常對照組舒張中期呈現中間段＞基底段＞心尖段的趨勢(P＜0.05),高血壓組舒張中期心尖段渦量最小(P＜0.05),但基底段與中間段差異無統計學意義(P＞0.05),兩組其餘時相由基底段到心尖段均逐漸降低(P＜0.01).④與正常對照組比較,高血壓組心尖段舒張早期及舒張晚期、中間段收縮晚期渦量增大(P=0.045,P=0.004,P=0.015).⑤舒張晚期心尖段、中間段及基底段的渦量與E/A負相關(r=-0.310,-0.334,-0.333;P=0.028,0.020,0.021),等容收縮期心尖段渦量與E/e'正相關(r=0.348,P=0.016).結論 VFM技術可直觀反映高血壓病患者左室血流動力學變化,渦量與心髒舒張功能的評價指標相關.
목적 응용혈류향량성상(VFM)기술평개고혈압환자좌심실혈류동역학변화,탐토혈류개변여좌심실공능적관계.방법 선취고혈압조28례화정상대조조26례,분석속도향량도、류선도、와량도적변화특정,정량측량각시상각절단와량적연변규률급조간차이.이용쌍공능다보륵기술획취이첨판서장조기봉치속도(E)、서장만기봉치속도(A)、E파감속시간(EDT)、이첨판배측벽서장조기봉치속도(e'),계산E/A、E/e',여와량진행상관성분석.결과 ①여대조조비교,고혈압조좌심실수축급서장말용적증가(P＜0.05),속도향량도、류선도、와량도균흠규칙.③정상대조조서장중기정현중간단＞기저단＞심첨단적추세(P＜0.05),고혈압조서장중기심첨단와량최소(P＜0.05),단기저단여중간단차이무통계학의의(P＞0.05),량조기여시상유기저단도심첨단균축점강저(P＜0.01).④여정상대조조비교,고혈압조심첨단서장조기급서장만기、중간단수축만기와량증대(P=0.045,P=0.004,P=0.015).⑤서장만기심첨단、중간단급기저단적와량여E/A부상관(r=-0.310,-0.334,-0.333;P=0.028,0.020,0.021),등용수축기심첨단와량여E/e'정상관(r=0.348,P=0.016).결론 VFM기술가직관반영고혈압병환자좌실혈류동역학변화,와량여심장서장공능적평개지표상관.
Objective To investigate the left ventricular hemodynamic changes of patients with hypertension by echocardiography using vector flow mapping (VFM).Methods Twenty-eight patients with hypertension (hypertension group) and 26 normal subjects (control group) were involved.All the subjects underwent conventional transthoracic echocardiographic examination and VFM on apical 3 chambers view.The evolution of velocity distribution,stream line and vorticity line in left ventricle were observed.Left ventricle was divided into basal,mid and apical segments,in which vorticity parameter (Vmax) were quantitatively measured and analyzed.Its relations to conventional left ventricular parameters (E,A,E/A,EDT,E/e') were then analyzed.Results ①Compared with the control group,LV end-diastolic,end-systolic volumes and E/e' significantly increased.The evolution of velocity distribution,stream line and vorticity in the hypertension group was slightly irregular.② In mid-diastole phase,vorticity of the control group showed the trend (middle＞ base ＞ apex)(P ＜0.05),which wasn't shown in hypertension group.In other phases,vorticity of both groups decreased from base to apex (P ＜0.05).③There were statistically differences in vorticity between the two groups in early diastolic phase,late diastolic phase of apex and late systolic phase of middle (P =0.045,0.004,0.015,respectively).④ There were negative correlations between Vmax in late diastolic phase of every segment and E/A (from basal segment to apex:r =-0.310,-0.334,-0.333;P =0.028,0.020,0.021).There was positive correlation between Vmax in isovolumic contraction time and E/e' (r =0.348,P =0.016).Conclusions VFM can be utilized to analyze left ventricular hemodynamics quantitatively and it may be a good supplement for assessing cardiac diastolic function.
