Active clinical trials for "Shock"

Fluid resuscitation is important in shock therapy, but the choice of fluids, especially the choice of crystalloid is under debate. It is said that normal saline is related to hyperchloremia， which might lead to acute kidney injury. Thus the hypothesis of the study is to explicit whether balanced salt solution could reduce the incidence of acute kidney injury when compared with normal saline.

Septic shock is common in intensive care and its mortality remains high. While new treatments have not improved survival, optimization of known and widely used techniques has allowed reduction in mortality. Thus improving care given to patients starts with making better use of existing resuscitation techniques. Among these practices, mechanical ventilation is widespread in the management of patients with septic shock. In large studies published in recent years in Europe and North America, 40 to 85% of patients receive invasive mechanical ventilation. It therefore appears that a significant proportion of patients are never intubated during treatment and management of their septic shock. There is no specific recommendation from critical care societies concerning mechanical ventilation in the treatment of septic shock. Apart from indisputable situations such as impaired consciousness or acute respiratoire distress, the decision whether to ventilate mechanically or not is left to the discretion of the physician. The aim of this study is to analyze intubation practice in septic shock patients and its impact on 28-day survival. This multicentric and observational study will be conducted in 30 French ICUs.

Fluid responsiveness in a context of circulatory failure can be assessed by different way. Microcirculatory evaluation to assess fluid responsiveness could be interesting, but the available device are expensive and the analysis are delayed. Capillary refill time (CRT) is hampered by its variability. The investigators have developed a method to standardize the pressure, the length of compression and a computerized analysis to calculate the capillary refill time. This method enables accurate measure of CRT. The investigators will study if CRT variation induced by a passive leg raising (PLR) can predict CRT after a 500 ml Fluid Load. About thirty patients in circulatory failure with a continuous cardiac output monitoring for whom, the attending physician has decided a fluid load, will be included. hemodynamic parameters (arterial pressure, venous pressure, cardiac output), metabolic parameters (arterial and venous blood gas and lactate), microcirculatory parameters (assessed by sublingual video-microscopy) and capillary refill time measured on the thorax and on the gingival area will be recorded. Data collection will be made before and after a passive leg raising and after a 500 ml fluid load of crystalloids. Patients will be aposteriori sorted in two groups: responders and non responders, defined by the reduction of CRT after the fluid load. The diagnosis ability of the CRT variation after PLR to predict in which group each patient is classified will be investigate and receiver operative characteristic curve will be built. These results will be compared to the metabolic response, the macrocirculatory response, and the microcirculatory response.

To investigate changes in the concentration of glucose, lactate, pyruvate and glycerol in the extracellular fluid of the skeletal muscle following Dexmedetomidine administration in patients with septic shock.

Cirrhotic patients have a poor outcome in intensive care unit (ICU). Septic shock is a leading cause of ICU admission and death in this specific population. We performed a monocentric retrospective study; all cirrhotic patients admitted in the ICU with septic shock from 2002 to 2013 were included. The aim of the study was to identify prognostic factors for both short- and long-term mortality in these patients. Demographic, clinical and biological data, organ supports, and outcomes were collected. Univariate and multivariate analysis were carried out regarding both ICU and one-year mortality.

Background: It is predicted that the nasal tip support will decrease with aging due to weakening of cartilage and connective tissues. However, there is no consensus on the age at which this change began. It is quite difficult to evaluate the nasal tip support, while the ideal nasal tip support pressure is also not known. The aim of this study is to determine the nasal tip support pressure alterations in various age groups, by measuring nasal tip support with a Newton meter, according to age and gender. Methods: This prospective clinical study was conducted between January 2019 and April 2019 at a tertiary health facility. Nasal tip resistances in 4 different age groups, as 20-29, 30-39, 40-64 and 65 years and older, were measured with a digital Newton meter. A total number of 159 patients with a minimum of 36 patients in each age group were included in the study. Nasal tip resistance measurements were compared among nasal tip displacement distances of 2mm, 3mm and 4mm, according to age groups and gender.

Transthoracic echocardiography (TTE) has been used as a reference technique for CO measurement and its accuracy has been adequate for many clinical uses. TTE is painless, safe and non-invasive. Some drawbacks of TTE are being expensive, bulky and needs advanced training. Currently, due to increased interest in minimally invasive hemodynamic monitoring, multiple new methods have become commercially available to assess CO: the arterial pulse aortic flow, bioreactance, and bioimpedance. One of these new devices is LiDCOrapid (LiDCO Ltd, Cambridge, UK). It is a new, minimally invasive monitor which estimates beat-by-beat CO and fluid responsiveness from the arterial waveform. It has been validated after vascular, urological and thoracic surgery and shows good agreement with the PA catheter in swine, in patients with normal left ventricular systolic function and in patients with vasodilatation. However, LiDCO has not yet been validated in patients with septic shock. Therefore, the aim of this study is to validate LiDCOrapid parameters in septic shock patients using TTE derived parameters as the non-invasive reference.

Predicting arterial lactate and blood gas values with sufficient accuracy by simply analyzing central venous blood would be interesting in intensive care unit patients in whom the insertion of an arterial catheter or arterial punctures could be avoided. This prospective study aims at externally validating published mathematical models built to predict arterial values from central venous blood analysis.

Sepsis is the result of a complex pathological process which involves an intravascular inflammatory state, loss of vascular tone, endothelial injury, extravascular leakage, and often inefficient myocardial contractility. These affect the cardiovascular homeostasis as well as the regional perfusion and tissue oxygenation of patient. The importance of early cardiovascular support in septic patients is the reason why, for about fifteen years, the implementation of standardized resuscitation protocols has been emphasized. The Surviving Sepsis Campaign Guidelines (SSG) recommend an initial fluid resuscitation followed by use of a vasoactive agent such as norepinephrine for the treatment of patients with septic shock. To understand the impact of the hemodynamic support provided by the resuscitation strategy, the assessment of surrogate clinical parameters is pivotal. According to the current guidelines, the increase of mean arterial pressure (MAP) above 65 mmHg represents the threshold in defining patients as "stable". Although this strategy has been well established, its impact on the actual hemodynamic profile of the septic patient, remains a subject of ongoing controversy. In this scenario, the transpulmonary thermodilution technique (TPTD) allows invasive assessment of the patient hemodynamic profile in terms of fluid responsiveness, vasomotor status, or global cardiac efficiency. By using this technique, several studies highlighted a wide variability in the individual response of patients undergoing cardiovascular stabilization guided by SSG. This suggests that the implementation of a "customized" resuscitation protocol based TPTD derived parameters rather than resuscitation strategy guided by a fixed mathematic model, could be preferred. However, in daily clinical practice, the use of this advanced hemodynamic monitoring system in not routinely used, though it is often reserved in case of failure of the initial SSG-resuscitation protocol. The investigators supposed that, even if the initial resuscitative efforts were successful in achieving the SSG targets i.e. by restoring the MAP > 65 mmHg, this could still be inadequate in some patients. Accordingly, the investigators hereby will report the hemodynamic profile of patients with septic shock admitted in ICU.

The main objective of this study is to evaluate in a population of patients with septic shock receiving 500 ml crystalloid over 10 minutes, the proportion of patients classified as "responders" to the fluid challenge (increase of at least 15% of ITV in aortic) at the end of vascular filling (T10) and becoming "non-responders" 20 minutes after the end of the fluid challenge (T30) and whether this proportion is greater than 10 points.