View clinical trials related to Fluid Responsiveness.
Filter by:Fluids are generally administered to patients in order to improve circulation. However, fluids do not always improve circulation and fluids have side effects. Unfortunately, it is difficult to predict whether fluid administration improves the circulation, i.e. it is difficult to predict fluid responsiveness The overall aim of this observational study is to investigate if analysis of spontaneously occuring extra systoles can give the answer: The second beat in the extra systole - the post ectopic beat - is a normal sinus beat but it has experienced the compensatory pause, i.e. this beat is associated with increased filling time and in turn associated with increased filling. As such, the post ectopic beat shows how the heart responds to increased filling. Therefore, the hypothesis of this study is that the hemodynamic response to the increased filling at the post ectopic beat (compared with sinus beats) can predict fluid responsiveness
NICOM® is a recently developed noninvasive cardiac output monitoring device, and indices derived from NICOM® such as SVV has been reported to predict fluid responsiveness in the previous studies. However, its usefulness in prone positioning has not been investigated. Thus, the aim of this prospective observational study is to evaluate the usefulness of stroke volume variation (SVV) derived from NICOM® to predict fluid responsiveness in prone patients undergoing spine surgery.
Appropriate indices to guide fluid therapy are essential for effective hemodynamic management during the perioperative period. Values derived from respiratory changes in arterial pressure waveform or plethysmographic waveform such as stroke volume variation and pleth variability index have been demonstrated to be able to predict fluid responsiveness in surgical or critically ill patients. Their ability to predict fluid responsiveness can be affected by factors that influence the arterial tone or the compliance of the respiratory system by position change. The aim of this prospective trial is to investigate the ability of stroke volume variation and pleth variability index to predict fluid responsiveness in the reverse trendelenberg position.
The aim of this study is to compare the accuracy of Pleth Variability Index (Radical 7 device) and of Pulse Pressure Variation (Nexfin device) with the Doppler measurement of stroke volume (esophageal Doppler) to detect the response to a fluid challenge.
The purpose of this study is to evaluate the ability of fluid responsiveness by stroke volume variation value of NICOM(Noninvasive cardiac output monitor)system during congenital cardiac surgery.
Fluid challenge is often carried out in critical ill patients. Its responsiveness usually requires invasive monitoring. To use non-invasive methods is very tempting. We hypothesize that transcutaneous pO2,transcutaneous pCO2 and Central Venous pO2 variations provide feasible estimation on fluid responsiveness in critical ill patients.
Optimal fluid management has been considered as crucial part to determine postoperative outcome and organ function. Recently developed, non invasive cardiac output measurement(NICOM, Cheetah Medical, Portland, OR)has enabled continuous cardiac output(CO) monitoring just by attaching electrode on chest wall. Moreover, CO and SSV derived from NICOM have been demonstrated as predictors of fluid responsiveness. Therefore, the aim of this study is to evaluate stroke volume variation derived from NICOM as a predictor of fluid responsiveness in neurosurgical patients. In addition, we plan to reveal inconclusive patients using gray zone approach.
A study to determine if echocardiographically derived parameters, plethysmographic variability index and pulse pressure variation predict fluid responsiveness in children on PICU.
The purpose of this study is to evaluate static and dynamic parameters, echocardiographic parameters, and pleth variability index for predicting fluid responsiveness in children. Children who need volume expansion will receive colloid 10 mL/kg. Blood pressure, heart rate, central venous pressure, systolic pressure variation, pulse pressure variation, delta down, aortic blood flow velocity variation, inferior vena cava diameter variation, and pleth variability index will be measure before and after volume expansion. Patients will be classified as responders to volume loading if stoke volume index increase by at least 15%.
Fluid administration is a daily intervention on the intensive care unit to improve cardiac output (CO) and stabilize circulation in critically ill patients. Simultaneously, the volume status of the patient is very difficult to assess. Too little volume leads to inadequate organ perfusion followed by ischemia and organ failure. Too much volume may worsen heart failure and cause pulmonary and peripheral edema and contribute to further tissue injury and organ dysfunction. Although dynamic indices have been shown to be more accurate predictors of fluid responsiveness, this relevant and complex task is usually guided by static clinical variables and the specialist's interpretation due to the fact that the interpretation of dynamic parameters is not fully developed and that they are not universally available. This lack of understanding is partially because of the complex interaction with mechanical ventilation. The investigators hypothesize that knowing the distribution of ventilatory pressures will make it possible to index dynamic parameters to tidal volume and improve their predictive value concerning the volume status of the patient. In addition, it would be of interest to be able to predict fluid responsiveness in a non-invasive way, especially in critically ill patients. Up to now, continuous non-invasive cardiac output monitoring using Nexfin in critically ill patients has not been validated and also not tested for its ability to predict fluid responsiveness. The present research proposal evaluates the possibility and accuracy of the model flow analysis obtained by non-invasive finger arterial pressure measurements to determine fluid responsiveness using passive leg raising. It will also be compared to a more invasive method (that is currently used in the clinic) to assess its ability to measure absolute CO levels accurately. It may make it possible to assess fluid responsiveness in a non-invasive and patient friendly way.