Shimamoto H, Kito H, Kawazoe K, Fujita T, Shimamoto Y
Department of Cardiovascular Surgery, National Cardiovascular Centre, Suita, Japan.
Br Heart J. 1992 Nov;68(5):510-5. doi: 10.1136/hrt.68.11.510.
To compare cardiac output measured by the transoesophageal Doppler and thermodilution techniques.
Prospective direct comparison of paired measurements by both techniques in each patient.
Intensive care unit in a cardiovascular centre.
65 patients after open heart surgery (mean (SD) age 53 (12) years).
Cardiac output was measured simultaneously by the transoesophageal Doppler and thermodilution techniques. Cardiac output was measured again after a mechanical intervention or volume loading.
The limits of agreement were -2.53 to +0.83 1.min-1 for cardiac output measured by the Doppler and thermodilution techniques. This suggests that the Doppler method alone would not be suitable for clinical use. The second measurement of cardiac output by thermodilution was compared with cardiac output estimated from the first and second Doppler measurements and the first thermodilution measurement. The limits of agreement (-0.55 to +0.51 1.min-1) were good enough for clinical use.
After cardiac output had been measured simultaneously by both the Doppler and thermodilution techniques, subsequent transoesophageal Doppler alone gave a clinically useful measurement of cardiac output.
比较经食管多普勒技术和热稀释技术测量的心输出量。
对每位患者同时采用两种技术进行配对测量的前瞻性直接比较。
心血管中心的重症监护病房。
65例心脏直视手术后患者（平均（标准差）年龄53（12）岁）。
同时采用经食管多普勒技术和热稀释技术测量心输出量。在进行机械干预或容量负荷后再次测量心输出量。
多普勒技术和热稀释技术测量心输出量的一致性界限为-2.53至+0.83升/分钟。这表明仅多普勒方法不适合临床应用。将热稀释法第二次测量的心输出量与根据第一次和第二次多普勒测量以及第一次热稀释测量估算的心输出量进行比较。一致性界限（-0.55至+0.5１升/分钟）足以用于临床。
在同时采用多普勒技术和热稀释技术测量心输出量后，随后单独使用经食管多普勒能得出临床上有用的心输出量测量值。
