[热稀释法与经食管超声心动图在左心室功能良好患者心输出量测量中的比较]

[Thermodilution vs transesophageal echocardiography for cardiac output measurement in patients with good left ventricle function].

作者信息

Bródka Jarosław, Tułecki Łukasz, Ciurysek Magdalena, Gburek Tadeusz

机构信息

Oddział Kardiochirurgii SPSW w Zamościu.

出版信息

Anestezjol Intens Ter. 2010 Jan-Mar;42(1):15-8.

PMID:20608209

Abstract

BACKGROUND

Transesophageal echocardiography (TEE) has been regarded as a standard diagnostic method for assessment of cardiac output in aortic dissection, pulmonary embolism, atrial and ventricular septal defects, and acquired valvular defects. It is also a standard method of assessment of the adequacy of their surgical repair. It allows for on-line estimation of ejection fractions and stroke volumes, and calculation of cardiac output. In this prospective study, we compared the cardiac outputs estimated by aortic continuous-wave Doppler, and pulse wave Doppler via transgastric long-axis imaging plane TEE, with results obtained by thermodilution.

METHODS

Cardiac output was determined in thirty adult patients, of both sexes, with good left ventricular function, scheduled for off pump coronary artery bypass grafting. Aortic valve area was plotted from the transverse short-axis view of the valve assuming a triangular shape for the valve orifice.

RESULTS

Mean cardiac output measured by thermodilution [CO(S-G)] was 4.59 +/- 2.5 L min(-1), compared to 4.49 +/- 1.14 L min(-1) obtained from contour wave [CO(CW)] and 4.57 +/- 1.29 L min(-1) from continuous-wave [CO(PW)] analysis. The correlation coefficient (r) between CO(S-G) and CO(CW) was 0.939, (p < 0.001).The correlation coefficient (r) between CO(S-G) and CO(PW) was 0.912 (p < 0.001).

CONCLUSIONS

Results of cardiac output measurements, obtained from all three methods, were comparable.

摘要

背景

经食管超声心动图（TEE）一直被视为评估主动脉夹层、肺栓塞、房间隔和室间隔缺损以及后天性瓣膜缺损患者心输出量的标准诊断方法。它也是评估这些疾病手术修复效果是否充分的标准方法。该方法可在线估计射血分数和每搏量，并计算心输出量。在这项前瞻性研究中，我们比较了通过主动脉连续波多普勒以及经胃长轴成像平面TEE的脉冲波多普勒估计的心输出量与热稀释法获得的结果。

方法

对30例计划进行非体外循环冠状动脉搭桥术、左心室功能良好的成年男女患者测定心输出量。从瓣膜的横向短轴视图绘制主动脉瓣面积，假设瓣膜口为三角形。

结果

热稀释法测得的平均心输出量[CO（S-G）]为4.59±2.5 L·min⁻¹，相比之下，轮廓波[CO（CW）]测得的值为4.49±1.14 L·min⁻¹，连续波[CO（PW）]分析测得的值为4.57±1.29 L·min⁻¹。CO（S-G）与CO（CW）之间的相关系数（r）为0.939，（p<0.001）。CO（S-G）与CO（PW）之间的相关系数（r）为0.912（p<0.001）。