Active clinical trials for "Hypovolemia"

It is the purpose of the researchers to identify the variation in intravascular deficits which can have relevance in high risk patients for minor and medium sized surgery. The investigators will also estimate fluid deficit in healthy, non-fasting subjects for comparison.

Intraoperative hemodynamic management is important, since even mild variations in circulatory volume can be extremely damaging for patients. Minimally invasive hemodynamic monitoring are not always available or cost-effective, therefore management of fluids is challenging for anesthesiologists. This study aims to assess if, after performance of a lung recruitment maneuver (LRM), standard parameter's variation differs between hypovolemic and normovolemic patients. Patients' volemic state will be assessed with the Vigileo system. Standard monitoring values (heart rate, invasive blood pressure and saturation) will be registered before and after LRMs. A fluid challenge will be performed and the above mentioned parameters will be recorded again, after a second LRM. The study is a prospective observational study.

The elliptic shape of inferior vena cava (IVC) sections, while hindering the ultrasound measurement of IVC diameter, may provide a useful tool to estimate central venous pressure (CVP). Hypothetically, the higher is CVP and more the ratio R between minimum and maximum diameters approximates 1. The purpose of this study is to determine R values in four different sections before and after a fluid load test, in order to evaluate if R is affected by the test and at which level the variation is larger. The secondary endpoint is to search for the parameter best predictive of the positivity of the fluid load test among IVC minimum and maximum diameters, eccentricity, section area, and blood velocity at the level that presented the largest variations after the fluid load.

This prospective observational study aims to (i) asses intensive care doctors trigger for and the expected physiological response to a fluid bolus and (ii) evaluate the patient's actual physiological response to a single fluid bolus at one hour post-bolus for 100 adult patients admitted to the intensive care unit will be included in the study.

A prospective, 2-arm, single-blind, randomized controlled clinical feasibility trial design is planned. Forty CCI survivors will be randomized (1:1) to either the PS-PICS (peer support) intervention or usual care (control) group.

In high perioperative risk patients, guidelines suggest intraoperative haemodynamic optimization by measurement of stroke volume (SV) to guide fluid resucitation.This strategy requires an invasive monitoring and learning. Some studies tried to find SV surrogates based on haemodynamic usual parameters. In an experimental hemorrhagic shock, SV was correlated to the pulse pressure (PP) / heart rate (HR) ratio. The investigators hypothesized that SV variations (ΔSV) would be correlated to the PP/HR ratio variations (ΔPP / HR) during fluid challenge, and ΔPP / HR would be able to detect a ΔSV greater than 10%.

The aim of the study is to analyze if blood protein concentration variation during continuous renal replacement therapy (CRRT) with fluid removal can predict a decrease of 15 % of cardiac index in intensive care unit (ICU) patients. Blood protein concentration, clinical data describing hemodynamic status (providing data from Pulsion medical system PiCCO2 ® monitoring), including preload dependency evaluation with passive leg raising, are collected at different times: before initiation of fluid removal, and after the first episode of hypotension or one hour after initiation of fluid removal.

Fluid overload increases morbidity and mortality of pediatrics patients in intensive care unit (ICU). It could be interesting to predict the decrease in stroke volume when diuretics are prescribed. Nevertheless, no test predict a decrease of stroke volume in a context of a diuretics induced depletion. Abdominal compression (AC) coupled with echocardiographic measurement of the stroke volume can predict fluid responsiveness and is a good tool to assess preload dependency. Another point is that during depletion refilling can occur. We aim to assess the diagnostic accuracy of abdominal compression to predict a decrease of the stroke volume of 15 % during diuretic-induced depletion of 10 ml/kg of diuresis. Secondary outcome will assess the hemoconcentration during depletion to diagnose a decrease of stroke volume during diuretic induced depletion

The purpose of this study is to verify any existing relationship between mixed oxygen saturation (from central venous catheter) and urinary sodium, potassium, chloride in determining the volemic state and renal perfusion of patients undergoing major surgical interventions.

The purpose of this study is to verify any existing relationship between urinary parameters (such as excretion of sodium, chlorine, urinary partial CO2 pressure [PuCO2]) and general volemic indicators (such as PiCCO, ScvO2, O2 delivery) during liver transplant.