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hyperoxia/emorragia

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Pagina 1 a partire dal 143 risultati

PbtO2 monitoring in normobaric hyperoxia targeted therapy in acute subarachnoidal hemorrhage.

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UNASSIGNED Low brain tissue oxygen tension (PbtO2), or brain hypoxia, is an independent predictor of poor outcome. Increasing inspirational fraction of oxygen could have a significant influence on treating lower PbtO2. Combined PbtO2 therapy, compared to the approach that focus only on regulation of

Resuscitative effect of hyperoxia fluid on high-altitude hemorrhagic shock in rats and antishock mechanisms.

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Pathophysiological characteristics of hemorrhagic shock at high altitude are different from that at plain which involve severe injury, high mortality, difficult treatment and compromised liquid tolerance. High-altitude pulmonary/cerebral edema and multiple-organ dysfunction render the conventional

Cardiac Effects of Hyperoxia During Resuscitation from Hemorrhagic Shock in Swine.

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Hyperoxia (ventilation with FIO2 = 1.0) has vasoconstrictor properties, in particular in the coronary vascular bed, and, hence, may promote cardiac dysfunction. However, we previously showed that hyperoxia attenuated myocardial injury during resuscitation from hemorrhage in swine with coronary
In recent decades, there is increasing evidence suggesting that hyperoxia and hypocapnia are associated with poor outcomes in critically ill patients with cardiac arrest or traumatic brain injury. Yet, the impact of hyperoxia and hypocapnia on neurological outcome in patients with subarachnoid
The development of cerebral vasospasm in subarachnoid hemorrhage (SAH) due to cerebral aneurysms rupture results in cerebral circulation disturbances. Application of normobaric hyperoxia can be an effective way for improving of oxygen delivery to injured brain tissues. The purpose of this study was
BACKGROUND Hypotension and hypoxemia worsen traumatic brain injury outcomes. Hyperoxic resuscitation is controversial. The authors proposed that hyperoxia would improve hemodynamics and neuronal survival by augmenting oxygen delivery despite increased oxidative stress and neuroinflammation in
OBJECTIVE To compare the cardiorespiratory responses underlying the beneficial effects of hyperoxia during blood loss between normotensive (WKY) and hypertensive (SHR) rats. METHODS Experiments were carried out in anesthetized animals with both carotid bifurcations either innervated or denervated.

Application of normobaric hyperoxia therapy for amelioration of haemorrhagic shock-induced acute renal failure.

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BACKGROUND Hypoxia resultant from haemorrhagic shock is the primary cause of kidney damage. Application of normobaric hyperoxia therapy (NHT) is an acceptable treatment for acute haemorrhagic shock. We investigated the effect of NHT on amelioration of haemorrhagic shock-induced rat renal
Perfluorocarbon (PFC) emulsions are intravascular oxygen therapeutics that temporarily enhance tissue oxygenation in dilutional anemia. However, PFC emulsions are not resuscitation fluids because PFCs only work optimally in the presence of high O2 partial pressure (hyperoxia); moreover, because they
Experiments were conducted on rats to study systemic hemodynamics, microcirculation, and oxygen regimen in the organism in replacement of massive blood loss with albumin solution in normo- and hyperoxia. The results suggest that in breathing oxygen conditions are created in the organism for fuller

Hyperoxia or Therapeutic Hypothermia During Resuscitation from Non-Lethal Hemorrhagic Shock in Swine.

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We previously demonstrated beneficial effects of 22 h of hyperoxia following near-lethal porcine hemorrhagic shock, whereas therapeutic hypothermia was detrimental. Therefore, we investigated whether shorter exposure to hyperoxia (12 h) would still improve organ function, and whether 12 h of
OBJECTIVE Investigation of the effects of hyperoxia during resuscitation from hemorrhagic shock in swine with preexisting coronary artery disease. METHODS Prospective, controlled, randomized trial. METHODS University animal research laboratory. METHODS Nineteen hypercholesterolemic pigs with

Effects of Hyperoxia and Mild Therapeutic Hypothermia During Resuscitation From Porcine Hemorrhagic Shock.

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OBJECTIVE Hemorrhagic shock-induced tissue hypoxia induces hyperinflammation, ultimately causing multiple organ failure. Hyperoxia and hypothermia can attenuate tissue hypoxia due to increased oxygen supply and decreased demand, respectively. Therefore, we tested the hypothesis whether mild

Hyperoxia may be related to delayed cerebral ischemia and poor outcome after subarachnoid haemorrhage.

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OBJECTIVE To determine the association between exposure to hyperoxia and the risk of delayed cerebral ischaemia (DCI) after subarachnoid haemorrhage (SAH). METHODS We analysed data from a single centre, prospective, observational cohort database. Patient inclusion criteria were age ≥18 years,
BACKGROUND Although oxygen administration is fundamental in the management of aneurysmal subarachnoid hemorrhage (SAH) patients in the acute stage, hyperoxia has harmful effects. The effects of hyperoxia on neurological outcomes in SAH patients are unclear. We aimed to examine the association of
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