Active clinical trials for "Shock, Septic"

Septic shock remains a significant clinical problem associated with high rates of mortality among neutropenic patient despite antimicrobial therapy and supportive care. Recently, mesenchymal stromal cells (MSC) have demonstrated remarkable potential effect in sepsis. MSC treatment significantly reduced mortality in septic mice receiving appropriate antimicrobial therapy. MSCs reduced systemic inflammatory cytokine levels in mice, down-regulated of inflammation and inflammation-related genes (such as interleukin-10, interleukin-6). Bacterial clearance was greater in MSC-treated mice. Thus, MSCs have beneficial effects on experimental sepsis and suggest that MSСs-therapy may be an effective adjunctive treatment to reduce sepsis-related mortality. The safety of MSCs is proved by Graft-versus-host disease treatment MSCs in patients after bone marrow transplantation. This study hypothesis is that MSCs reduce organ dysfunction/injury, systemic inflammation and mortality in patients with septic shock and severe neutropenia. The main goal of the study is to evaluate the impact of MSCs therapy on organ dysfunction/injury, systemic inflammation and 28-day mortality in patients with septic shock and severe neutropenia. All patients will be randomized in two groups: control group (standard treatment of septic shock) and MSCs-group (standard treatment of septic shock + MSCs infusion of 1-2 millions/kg/ day).

The ICU mortality rate of patients with septic shock was still high upto 54.1%.In first 6 hours of resuscitation, the goals of resuscitation in sepsis shock after adequate fluid resuscitation is MAP ≥65 mmHg. In refractory septic shock patient, prolong shock correlate with poor outcome due to multiple organ failure. Alternative vasopressor in septic shock with catecholamine resistance has been studied such as terlipressin, methylene blue Terlipressin (TP) mediate vasoconstriction via V1 receptors coupled to phospholipase C, and increases intracellular Ca2+ concentration Methylene blue (MB) directly inhibits nitric oxide synthase (NOS) by inhibit the enzyme guanylate cyclase (GC)

In guidelines norepinephrine is the first line vasopressor recommended in case of septic shock. Use of vasopressin is recommended when norepinephrine fails to maintain a mean arterial pressure above 65mmHg or in salvage. Several studies failed to show a superiority of vasopressin over norepinephrine but none evaluated the effect of an early association on organ failure. Terlipressin is a pro-drug of vasopressin which has the same vasoconstrictor effect. We hypothesize that the early association of terlipressin and norepinephrine during septic shock reduces organ failure. This bi centric, double-blinded, randomised, controlled versus placebo study includes 40 patients. Randomisation will be stratified between centers (two university affiliated intensive care units of Assistance-Publique-Hôpitaux de Marseille, Marseille, France). All patients with septic shock needing more than 0,5µg/kg/min of norepinephrine to reach PAM objectives are randomised, after hemodynamic evaluation and optimisation, to receive continuous infusions of terlipressin (0,01mg/kg/min) or placebo (physiologic serum). The 2 groups receive steroid therapy (continuous intravenous hydrocortisone perfusion) at this time. Clinicians are blinded of perfusion used. Use of terlipressin remains possible in salvage when patients need more of 1µg/kg/min of norepinephrine on physician's decision. Patients with acute ischemic or septic heart failure are excluded of the study. Primary objective is sepsis related Sequential Organ Failure Assessment (SOFA) score difference between the groups at day 3. Secondary objectives are mortality at day 28, lactates clearance in the first 48hours, renal function (evaluates with AKIN criteria) and use of renal replacement therapy.

The role of albumin in sepsis has been controversial for decades. Although hypoalbuminemia has been associated with worse outcomes in sepsis, definitive evidence does not exist that replacing albumin in these patients improves outcomes. However, subgroup analyses from large clinical trials indicate that albumin may reduce mortality in septic shock, and in particular, may reduce the time a patient requires vasopressor support. Given this background, we are conducting this study to evaluate the role of albumin replacement in the patient with resolving septic shock to determine if albumin administration reduces the time a patient requires vasopressor support, reduces the time required for central line, and ultimately whether any potential benefit in terms of reduction of vasopressor support is associated with ICU length of stay and other outcomes. The approach is unique from larger trials of albumin in that it is a septic shock study geared at a particular phenotype of the patient in septic shock and evaluating a specific intervention at a specific time point in the course of septic shock.

This research is being done to see if a protocol (a set of orders that determine how much and how quickly a drug/fluid is given) for fluid and drugs used to increase blood pressure (vasopressors) will work better then general clinical practices to improve outcomes in patients with septic shock.

Sepsis and septic shock are public health problems worldwide that represents an excessive cost for health systems. Despite the great technological and research advances, mortality can reach up to 80% in patients with multiple organ failure (FOM). Therapeutic studies focused on evaluating the usefulness of the use of antioxidants have shown different outcomes and results. This randomized clinical trial in patients with septic shock at two general intensive care units try to evaluate the usefulness of four different antioxidant therapies added to the conventional treatment, which includes: n-acetyl cysteine, vitamin C, vitamin E and melatonin. Measurement of parameters before and after treatment of oxidative stress includes nitrates and nitrites, lipid peroxidation, glutathione peroxidase, glutathione s transferase, extracellular activity of SOD, GSH concentration and evaluation of total antioxidant capacity. The investigators will also evaluate the clinical impact of antioxidant therapy with the SOFA score.

Septic shock is a major health problem, with several million cases annually worldwide and a mortality approaching 45%. Tachycardia is associated with excess mortality during septic shock. This pejorative effect could be related to the increase in cardiac metabolic demand, impaired cardiac diastolic function, and/or poorer tolerance of administered exogenous catecholamines. Recent studies suggest that controlling the heart rate with the use of beta blockers has beneficial effects on the morbidity and mortality of septic shock. However, the negative effects of beta-blockers on cardiac contractility and blood pressure complicate their use during septic shock, particularly because about one-half of patients exhibit a septic-associated systolic dysfunction, which often requires the use of inotropes. Ivabradine is a selective inhibitor of If channels in the sinoatrial node. It is a pure bradycardic agent with no deleterious effect on other aspects of cardiac function (contractility, conduction and repolarization) nor on blood pressure. Ivabradine can therefore alleviate sinus tachycardia without negative inotropic effects nor hypotension. Moreover, the improvement in diastolic function (ventricular filling) with ivabradine may increase stroke volume, even in case of severe impairment of systolic function. Controlling sinus tachycardia with ivabradine during septic shock would allow reducing cardiac metabolic demand (and potentially associated ischemic events) and improving the chronotropic tolerance of exogenous catecholamines. The effectiveness of ivabradine in controlling the heart rate was demonstrated in various clinical settings such as coronary artery disease, chronic heart failure and cardiogenic shock. Encouraging preliminary data are reported in critically ill patients.

Persistent hyperlactatemia has been traditionally considered as representing tissue hypoxia, and lactate normalization is recommended as a resuscitation target by the Surviving Sepsis Campaign (SSC). However, other sources contribute to hyperlactatemia such as sustained adrenergic activity and impaired lactate clearance. Only hypoperfusion-related hyperlactatemia might be reversed by optimizing systemic blood flow. Fluid resuscitation (FR) is used to improve cardiac output (CO) in septic shock to correct hypoperfusion. Nevertheless, if persistent hyperlactatemia is not hypoxia-related, excessive FR could lead to flow overload. In addition, kinetics of recovery of lactate is relatively slow, and thus it might be a suboptimal target for FR. Peripheral perfusion appears as a promising alternative target. Abnormal capillary refill time (CRT) is frequently used as trigger for FR in septic shock. Studies demonstrated the strong prognostic value of persistent abnormal peripheral perfusion, and some recent data suggest that targeting FR on CRT normalization could be associated with less fluid loading and organ dysfunctions. The excellent prognosis associated with CRT recovery, the rapid-response time to fluid loading, its simplicity, and its availability in resource-limited settings, constitute a strong background to promote studies evaluating its usefulness to guide FR . The study hypothesis is that a CRT-targeted FR is associated with less positive fluid balances, organ dysfunctions, and at least similar improvement of tissue hypoperfusion or hypoxia, when compared to a lactate-targeted FR. To test this hypothesis, the investigators designed a clinical physiological, randomized controlled trial in septic shock patients. Recruited patients will be randomized to FR aimed at normalizing CRT or normalizing or decreasing lactate >20% every 2 h during the study period. Fluid challenges (500 ml in 30 min intervals) will be repeated until perfusion target is achieved, or dynamic predictors of fluid responsiveness become negative, or a safety limit is reached. The design of our study is aimed at: a) determining if CRT targeted resuscitation is associated with less fluid resuscitation and fluid balances; b) determining if this strategy is associated with less organ dysfunctions; and c) if it results in similar improvement in markers of tissue hypoperfusion or hypoxia such as hepato-splanchnic blood flow or microcirculatory perfusion.

Prospective single centre study to assess the feasibility of fluid resuscitation guided by macrocirculatory and microcirculation parameters in patients in the early stages of septic shock. The investigators will utilise a novel point of care tool to assess microcirculatory sublingual perfusion in patients with septic shock. This, in combination with conventional haemodynamic monitoring will determine the timing and volume of resuscitative fluid administration. The feasibility of this technique will be determined prior to embarking on a pilot RCT.

Albumin is a key regulator of fluid distribution within the extracellular space and possesses several properties beyond its oncotic activity, including binding and transport of several endogenous molecules, anti-inflammatory and anti-oxidant actions, nitric oxide modulation, and buffer function. The accumulating evidence suggests that supplementation of albumin may provide survival advantages only when the insult is severe as in patients with septic shock. Prospective randomized trials on the possible impact of albumin replacement in these patients with septic shock are lacking. The aim of the study is to investigate whether the replacement with albumin and the maintenance of its serum levels at least at 30 g/l for 28 days improve survival in patients with septic shock compared to resuscitation and volume maintenance without albumin. In this prospective, multicenter, randomised trial, adult patients (≥18 years) with septic shock will be randomly assigned within a maximum of 24 hours after the onset of septic shock after obtaining informed consents to treatment or control groups. Patients assigned to the treatment group will receive a 60 g loading dose of human albumin 20% over 2-3 hours. Serum albumin levels will be maintained at least at 30 g/l in the ICU for a maximum of 28 days following randomization using 40-80 g human albumin 20% infusion. The control group will be treated according to the usual practice with crystalloids as the first choice for the resuscitation and maintenance phase of septic shock. The primary end point is 90 days mortality and secondary end points include 28-day, 60-day, ICU, and in-hospital mortality, organ dysfunction/failure, and length of ICU and hospital stay. In total 1412 patients need to be analyzed, 706 per group. Assuming a dropout rate of 15%, a total of 1662 patients need to be allocated.