G. Rodig et al., Continuous cardiac output measurement: pulse contour analysis vs thermodilution technique in cardiac surgical patients, BR J ANAEST, 82(4), 1999, pp. 525-530
Citations number
27
Categorie Soggetti
Aneshtesia & Intensive Care","Medical Research Diagnosis & Treatment
We have analysed the clinical agreement between two methods of continuous c
ardiac output measurement: pulse contour analysis (PCCO) and a continuous t
hermodilution technique (CCO), were both compared with the intermittent bol
us thermodilution technique (BCO). Measurements were performed in 26 cardia
c surgical patients (groups 1 and 2, 13 patients each, with an ejection fra
ction >45% and <45%, respectively) at 12 selected times. During operation,
mean differences (bias) between PCCO-BCO and CCO-BCO did not differ in eith
er group. However, phenylephrine-induced increases in systemic vascular res
istance (SVR) by approximately 60% resulted in significant differences. Sig
nificantly higher absolute bias values of PCCO-BCO compared with CCO-BCO we
re also found early after operation in the ICU. Thus PCCO and CCO provided
comparable measurements during coronary bypass surgery. After marked change
s in SVR, further calibration of the PCCO device is necessary.