View clinical trials related to Hypovolemia.
Filter by:The purpose of this study is to evaluate predictability of an abdominal compression-induced change of blood pressure for fluid responsiveness in children.
The investigators hypothesize that analysis of blood pressure will allow doctors to predict whether or not blood flow from the heart (cardiac output) increases after intravenous fluids are given.
The purpose of this study is to determine whether the value of analgesia nociception index (ANI) is influenced by variations of systemic venous return (cardiac preload) under general anaesthesia.
Induced hypovolemia is known to improve surgical field during living donor hepatectomy. This procedure is conventionally guided by monitoring the central venous pressure (CVP). Stroke volume variation (SVV) is a novel method to substitute with CVP to monitor cardiac preload. The investigators try to evaluate the relationship between CVP and SVV during CVP-guided vasodilator induced hypovolemia (validation study). Then, feasibility of vasodilator induced hypovolemia using the SVV calculated from the validation study will be tested (feasibility study).
The aim of this study is to evaluate the correlation of capnography with non-invasive measurement of cardiac output with the FloTrac/EV1000 following a reversible fluid challenge, a passive leg raising maneuver, using thermodilution as the gold standard. The main hypothesis is a correlation of 0.8 between the increasing of ETCO2 and the increasing of ejection volume measured by FloTrac/EV1000 following a passive leg raising maneuver.
Fluid expansion during cardiocirculatory insufficiency was helped by cardiac output monitoring. However, the goal of fluid expansion was to increase the oxygen delivery, which consider cardiac output, but also Haemoglobin which decrease during a fluid challenge. The maximalization of cardiac output could decrease the oxygen delivery if the haemodilution was too wide. The aim of this study was to describe the oxygen delivery during a fluid expansion conducted for cardiac output maximalization, following actual guidelines.
Preoperative fasting can evoke a hypovolemia which may cause a hemodynamic instability during introduction of anesthesia. The purpose of this study is to test the hypothesis that a defined preoperative volume substitution compared to standard procedure will result in a reduced incidence of hemodynamic instabilities during introduction of anesthesia in elective surgery patients.
The purpose of this study is to understand and document measurements in heart stroke volume (the volume or amount of blood pumped per heart beat) and cardiac output (the volume or amount of blood pumped by your heart per minute) during a passive leg raise maneuver (elevation of the legs), and to determine if these measurements can predict changes in the same as a result of fluid or blood product administration.
Monitoring could secure management for patient but stay invasive. The purpose of this study was to compare,after cardiac surgery, the cardiac output measurement between transpulmonary thermodilution(reference method) and digital photoplethysmography (non invasive) for absolute value and dynamics changes before and after fluid expansion for patients with indication of fluid challenge.
The aim of volume replacement is to compensate a reduction in the intravascular volume e.g. during surgery and to counteract hypovolemia in order to maintain hemodynamics and vital functions. To achieve this, different plasma substitutes are available: Albumin, dextran, hydroxyethylstarches and gelatine. The aim of this study is to demonstrate that acid-base alterations during elective abdominal surgery can be reduced by the use of a new gelatine solution.