Clinical Trial Details
— Status: Completed
Administrative data
| NCT number |
NCT05131516 |
| Other study ID # |
IRBN902021/CHUSTE |
| Secondary ID |
|
| Status |
Completed |
| Phase |
|
| First received |
|
| Last updated |
|
| Start date |
January 10, 2022 |
| Est. completion date |
March 10, 2022 |
Study information
| Verified date |
March 2022 |
| Source |
Erasme University Hospital |
| Contact |
n/a |
| Is FDA regulated |
No |
| Health authority |
|
| Study type |
Observational
|
Clinical Trial Summary
The decision to give fluids or not should not be taken lightly. Indeed, excessive or
insufficient fluid administration is associated with increased morbidity and mortality.
Prediction of fluid responsiveness relies on the use of a hemodynamic variable to determine
how likely a patient is going to respond to a fluid bolus with a significant increase in
their cardiac output or stroke volume. Depending on the response to fluids, patients are
either responders or non-responders.
Today, we have many techniques to predict fluid responsiveness. However, almost all require
the use of an advanced hemodynamic monitoring device.
Description:
Predicting fluid responsiveness is important in the operating room in order to avoid
unnecessary fluid administration. Over the last 15 years, a number of dynamic tests have been
developed which are based on the principle of inducing short-term changes in cardiac preload,
using heart-lung interactions, the passive leg raise or by the infusion of small volumes of
fluid, and to observe the resulting effect on cardiac output or stroke volume. Pulse pressure
and stroke volume variations were first developed, but they are reliable only under strict
conditions. The variations in vena caval diameters share many limitations of pulse pressure
variations. The passive leg-raising test is now supported by solid evidence and is more
frequently used but not practical in the operating room. More recently, the end-expiratory
occlusion test has also been described, which is easily performed in ventilated patients.
Unlike the traditional fluid challenge, these dynamic tests do not lead to fluid overload.
The dynamic tests require the insertion of an arterial catheter linked to an advanced cardiac
output monitoring device which is costly and not applicable in lower risk patients without an
arterial line.
In the operating room, it is recommended to use alveolar recruitment maneuvers, consisting in
the transient administration of higher pressure levels, allowing to re-ventilate certain
pulmonary territories by re-expanding alveoli that would have collapsed under mechanical
ventilation. In daily practice, it is generally accepted that a patient presenting a
significant fall in stroke volume or mean arterial pressure during an alveolar recruitment
maneuver is preload dependent, but the scientific evidence in the literature remains
insufficient to date. A previous study has also demonstrated the ability to predict fluid
responsiveness via analysis of central venous pressure during a recruitment maneuver. By
extrapolation, we would like to evaluate the capacity of peripheral venous pressure to
predict this fluid responsiveness.