[Comparison of cardiac output measured by pulseCO and that by vigilance during inferior vena cava clamping].
BACKGROUND
PulseCO is a low invasive apparatus to measure cardiac output continuously from arterial pulse waveform (PulseCCO). It is thought that the accuracy of PulseCCO measurement is clinically acceptable with stable hemodynamics. We measured and evaluated PulseCCO during inferior vena cava clamp (IVC clamp).


METHODS
Anesthesia was induced with propofol and vecuronium. After induction, an arterial catheter and a pulmonary artery catheter were inserted, and anesthesia was maintained with general anesthesia and continuous epidural anesthesia. At first IVC was clamped for five minutes and after an interval of five minutes IVC was clamped again. During IVC clamp maneuver, we measured PulseCCO and continuous cardiac output with Vigilance (VigilanceCCO).


RESULTS
At the time of the first IVC clamp and declamp, VigilanceCCO was unchanged, but Pulse CCO showed a marked change. After the second IVC clamp, both PulseCCO and VigilanceCCO decreased, but the change was slower with VigilanceCCO.


CONCLUSIONS
With IVC clamp maneuver which is thought to cause rapid change of cardiac output, PulseCCO showed more rapid change in comparison with VigilanceCCO. In the state where hemodynamics change rapidly, PulseCO can be a more useful monitor.
Tsujimoto
Yoshitaka
Y
Department of Anesthesiology, National Defense Medical College, Tokorozawa.
Tsutsui
Masato
M
Kazama
Tomiei
T
Ogura
Takahiro
T
Fukuda
Isao
I
D000368:Aged; D000369:Aged, 80 and over; D000767:Anesthesia, Epidural; D000768:Anesthesia, General; D002138:Calibration; D002302:Cardiac Output; D003250:Constriction; D006801:Humans; D008297:Male; D016343:Monitoring, Intraoperative / Q000379:methods*; D011674:Pulse; D012680:Sensitivity and Specificity; D013815:Thermodilution; D014682:Vena Cava, Inferior