View clinical trials related to Shock.
Filter by:This project aims to determine the feasibility of conducting a randomized controlled trial investigating point of care ultrasound guided resuscitation compared with usual care in the management of shock at the Critical Care Trauma Centre (CCTC) in London Health Science Centre (LHSC).
Point-of-care ultrasound (POCUS) has been found to be useful for aiding in the prediction of fluid responsiveness. It is unknown if trainees can effectively utilize this tool to improve their assessment of fluid responsiveness. In this prospective, observational study, pulmonary and critical care fellows are asked to make 2 assessments of fluid responsiveness in adults with shock: (1) based on clinical exam alone (Clinical) and (2) after performing a POCUS (Clinical + US). The accuracy of their pre- and post-ultrasound assessments are compared using a bioreactance monitor and passive leg raise test as the gold standard of fluid responsiveness in this study.
Septic shock is responsible in 20% of cases of acute adrenal insufficiency and in 50% of cases of chronic 'slow' adrenal insufficiency. Given the unpredictable nature of the response to the ACTH stimulation test, it is recommended to systematically start steroid replacement therapy with hydrocortisone hemisuccinate (HCHS) in patients in septic shock who do not respond to fluid resuscitation and who continue to suffer from haemodynamic instability despite increasing doses of noradrenaline. The interest of this corticosteroid therapy lies in its ability to reduce the duration of treatment with catecholamines, though the results are conflicting with regard to an eventual benefit for mortality. Steroid replacement therapy may be deleterious. It may increase the risk of sepsis and secondary septic shock. It is also implicated in critical-illness polyneuropathy and blood glucose dysregulation. Today, there is no way to identify a population of patients who respond to corticosteroid therapy. From a pathophysiological viewpoint, HCHS, as well as its glucocorticoid effects, may also exert mineralocorticoid effects able to compensate for the impaired renin angiotensin aldosterone system (RAAS), which is responsible for the refractory aspects of septic shock. This hyperreninism-hypoaldosteronism is found with a prevalence of around 50% of cases and is defined by a plasma aldosterone/ plasma renin ratio < 2. It is associated with natriuresis >30 mmol/l. We hypothesise that natriuresis > 30 mmol/l will make it possible to identify patients who respond to steroid replacement therapy in terms of catecholamine use.
The aim of this work is to compare two protocols (ketamine-midazolam versus fentanyl-midazolam) for induction of anesthesia in patients with septic shock aiming to find the most safe protocol with regards to hemodynamic status of patients
The passive leg raising (PLR) test is a reversible preload challenge of around 300 mL of blood that can be repeated as frequently as required without infusing a drop of fluid. Two recent meta-analyses of many studies have confirmed the reliability of the PLR test to predict fluid responsiveness in patients with acute circulatory failure. Nevertheless, the effects of the PLR must be assessed by the direct measurement of cardiac output since changes in arterial pressure do not allow the assessment of the PLR hemodynamic effects with reliability. Moreover, cardiac output must be measured continuously and in real time. In clinical practice, cardiac output measurement can be difficult for different reasons such as the unavailability of the echocardiography machine, or the absence of any continuous cardiac output monitoring technique at the time of acute circulatory failure occurrence. Recently, it was shown that the decrease in pulse pressure variation (PPV) induced by the mini-fluid challenge (100 mL of colloid solution infused in 1 min) was able to predict fluid responsiveness with reliability in patients ventilated with low tidal volume (<8 mL/kg of ideal body weight). Therefore, the investigators hypothesize that the changes in PPV induced by PLR test could be able to predict fluid responsiveness with reliability in mechanically ventilated patients with acute circulatory failure.
Extra-corporeal membrane oxygenation (ECMO) life support system can provide both cardiac and respiratory support to patients with heart and respiratory failure. It can save time for these patients to regain organ function or to receive transplantation. Both the investigators' team and Ince et al. from the Netherland found that the microcirculatory dysfunction is more severe in ECMO non-survivors. The next step of research is to find out the key factors that affect microcirculation in ECMO patients. Because the blood flow supplied by the venoarterial ECMO (VA-ECMO) is directly related to macrocirculation, this study aims to investigate the effect of adjustment of VA-ECMO blood flow on microcirculation. The investigators hope that the results of this study can help the medical team to improve the quality of ECMO care.
Septic shock remains a major public health problem in industrialized countries, with a mortality rate as high as 50%, largely related to multiple organ dysfunction. In addition to dysregulated inflammatory response, the pathophysiology of organ failures in septic shock involves ischemia-reperfusion processes. Remote ischemic conditioning is a therapeutic strategy for protecting organs against the detrimental effects of ischemia-reperfusion injury. The objective of the present study is to determine whether remote ischemic conditioning can limit the severity of organ failure in patients with septic shock.
To conduct a multicenter observational cohort study to determine the variability in fluid resuscitation in shock in a broad range of areas in hospitals and treatment areas.
In the operating room, most intubation procedures (IP) are scheduled and performed on hemodynamically stable patients. In the ICU, IP is frequently performed in emergent patients, because of unstable hemodynamics and/or acute respiratory failure, and complicated by a subsequent cardiovascular collapse. Transthoracic echocardiography (TTE) has become readily available in most ICUs for several years. Echocardiography enables to perform a noninvasive hemodynamic evaluation (cardiac function and volemia status). We hypothesized that performing a TTE prior to IP may help to predict cardiovascular collapse and its components.
This is a randomised, double-blind, two-stage, placebo controlled study. It is designed to investigate the safety, tolerability, pharmacokinetics and pharmacodynamics of 3 doses of MOTREM versus placebo in adult patients with septic shock.