Continuous cardiac output measurement with transesophageal Doppler echocardiography versus Swan Ganz catheter
- VernacularTitle:经食管超声多普勒与Swan-Ganz导管测定的连续心输出量相关性比较
- Author:
Yan RUI
;
Yun YUE
;
Jianjing LONG
- Publication Type:Journal Article
- Keywords:
Echocardiography, transesophageal;
Catheterization, Swan-Ganz;
Cardiac output
- From:
Chinese Journal of Anesthesiology
1995;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
ve Cardiac output is traditional measured by thermodilution technique. Recent advance in catheter technique has allowed continuous monitoring of cardiac output, but it is invasive and expensive. The new transesophageal Doppler echocardiography (HemosonicTM 100) can measure aortic blood flow (ABF) and ABF is closely related to cardiac output (CO) (CO= ABF/70%). The purpose of this study was to compare cardiac output continuously measured with transesophageal Doppler echocardiography and modified Swan-Ganz catheter. Methods Forty ASA II - III patients aged 40-65 yr undergoing elective coronary artery bypass (CAB) were included in this study. Premedication consisted of intramuscular diazepam 10 mg, morphine 10 mg and scopolamine 0.3 mg. Anesthesia was induced with midazolam 0.08 mg?kg-1, fentanyl 10?g?kg-1 and pipecuronium 0.1 mg?kg-1 and maintained with isoflurane inhalation, continuous infusion of propofol and intermittent boluses of fentanyl, midazolam and pipecuronium. The sensor of transesophageal Doppler echocardiograph (TDEE) was placed in the esophagus at the level of T5-6 vertebra after induction and tracheal intubation. The sensor faced backward toward descending aorta. Swan-Ganz catheter (CCO/Sv()2) was placed via right internal jugular vein. In addition intra-arterial BP, ECG, SpO2, PET CO2 and nasal temperature were monitored.Results Continuous cardiac output measured with TDEE and Swan-Ganz catheter (CCO/SvO2) were highly correlated (R = 0.801, P
