CAJ | 학술논문

目的：利用超声心动图定位右心房中心点在体表的位置，为用无创方法准确测定中心静脉压提供基准点。方法通过C T三维重建技术，对30例进行胸部C T检查的患者定位右心房中心点位置；依据空间几何原理，通过超声心动图定位右心房中心点，并标记于前胸壁；将超声定位点与CT 定位点对比，用二者间绝对距离、垂直距离、整个操作时间来评估测量的准确性和可行性。结果平均绝对距离为07．6cm（95％可信区间：06．2～08．1cm），平均垂直距离为01．6cm（95％可信区间：－00．2～03．4cm），平均操作时间为438．0 s （95％可信区间：400．1～474．0 s ）。结论依据空间几何原理的超声定位法可以准确、简便地定位右心房中心点在体表的位置，将有助于提高中心静脉压无创测定的准确性。
목적：이용초성심동도정위우심방중심점재체표적위치，위용무창방법준학측정중심정맥압제공기준점。방법통과C T삼유중건기술，대30례진행흉부C T검사적환자정위우심방중심점위치；의거공간궤하원리，통과초성심동도정위우심방중심점，병표기우전흉벽；장초성정위점여CT 정위점대비，용이자간절대거리、수직거리、정개조작시간래평고측량적준학성화가행성。결과평균절대거리위07．6cm（95％가신구간：06．2～08．1cm），평균수직거리위01．6cm（95％가신구간：－00．2～03．4cm），평균조작시간위438．0 s （95％가신구간：400．1～474．0 s ）。결론의거공간궤하원리적초성정위법가이준학、간편지정위우심방중심점재체표적위치，장유조우제고중심정맥압무창측정적준학성。
Objective To propose an accurate method of noninvasive determination of central venous pressure(CVP ) by locating the central point of right atrium (RA ) using echocardiography .Methods Through the 3D reconstruction ,the accurate positions of RA of 30 patients who had been examined by multislice 3‐dimensional computed tomography for chest imaging were recorded .Based on solid geometric principles ,the central point in RA was located by echocardiography and then compared with CT‐location point .The accuracy and feasibility were assessed by absolute distance (Da) ,vertical distance (Dv) and the whole time of location (T) between the two points .Results Mean Da ,Dv and T of the whole subjects were 07.6cm(95% CI:06.2to08.1cm),01.6cm(95% CI:-00.2to03.4cm),and438.0s(95% CI:400.1to 47 4.0 s) ,respectively .Conclusions The echocardiographic method on the basis of solid geometry proposed in this study could be used to locate the central point in RA accurately and simply .Thus it would be helpful to improve the accuracy of noninvasive determination of central venous pressure .