Goal-directed fluid therapy (GDFT) strategies based on cardiac output (CO) optimization have been shown to benefit moderate- to high-risk surgery patients and have recently been recommended by professional societies in the UK, in France, and in Europe. However, despite the growing evidence, these strategies are often not implemented in current practice. One of the reasons for this lack of implementation is that GDFT strategies, like any other complex clinical protocol, require significant provider attention and vigilance for consistent implementation and it is well known that even under study conditions protocol compliance rates are often not greater than 50%. To overpass this problem, our CO monitoring devices (EV1000, Edwards Lifesciences) have now an incorporated assisted fluid management software. This software determines fluid responsiveness by estimating the predicted change in stroke volume and suggests to the anesthesiologist when fluid is required .
The aim of this study was to assess an assisted fluid management strategy in a moderate-to-high risk surgical cohort and compare that cohort to matched patients who received manual GDFT. Our hypothesis was that the assisted fluid management system would result in higher mean percentage time spent during surgery with a SVV \< 13%
Study Type
OBSERVATIONAL
Enrollment
46
Erasme
Brussels, Belgium
percentage time spent with SVV < 13%
defined as preload independent state
Time frame: intraoperative period
amount of fluid administered
amount of cristalloid ( baseline ) AND fluid boluses (250 ml) received
Time frame: intraoperative period
amount of vasopressors required
amount of ephedrine, phenylephrine and norepinephrine
Time frame: intraoperative period
fluid balance
FLUID IN - FLUID OUT
Time frame: intraoperative period
incidence of major and minor complications
see study protocol NCT03039946 for the description of these complications
Time frame: until 30 days post surgery
PACU/ICU and hospital length of stay
time spent in ICU and PACU
Time frame: until 30 days post surgery
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