hypotension/نقص الأكسجة

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Accuracy of noninvasive oxyhemoglobin saturation, end-tidal carbon dioxide concentration, and blood pressure monitoring during experimentally induced hypoxemia, hypotension, or hypertension in anesthetized dogs.

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OBJECTIVE To determine reliability of noninvasive methods of arterial oxyhemoglobin saturation (SpO2), end-tidal CO2 concentration (PEtCO2), and blood pressure (BP) determination during periods of hypoxemia and systemic arterial BP perturbations. METHODS 7 healthy, conditioned dogs weighing 19 to 22

Predictors of Definitive Airway sans Hypoxia/Hypotension on First Attempt (DASH-1A) Success in Traumatically Injured Patients Undergoing Prehospital Intubation.

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Prehospital intubation success is routinely treated as a dichotomous outcome based on an endotracheal tube passing through vocal cords regardless of number of attempts or occurrence of hypoxia, or hypotension, which are associated with worse outcomes. We explore patient, provider, and

Altered brain oxygen extraction with hypoxia and hypotension following deep hypothermic circulatory arrest.

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The utilization of cardiopulmonary bypass in neonates, infants and children often requires the use of deep hypothermia at 18 degrees C with occasional periods of circulatory arrest. Thus, marked physiologic extremes of temperature and perfusion are induced. The safety of these techniques appears to

Severe hypoxemia and hypotension during general anesthesia of a patient with an anterior mediastinal mass: A case report.

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Mediastinal masses may cause compression of vital structures such as major airways, the superior vena cava and, rarely, the pulmonary artery. The latter could cause cardiorespiratory compromise during or after induction of general anesthesia. We observed a case of a 45-year-old woman with an

The effect of hypotension and hypoxia on children with severe head injuries.

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Survival of children (< 17 years) with severe head injuries (Glascow Coma Scale [GCS] score < 8) has been shown to be better than that of adults. The addition of hypotension (HT) or hypoxia (H) has a deleterious effect on outcome in adults but no information is currently available about their

Recovery of brain energy metabolism following a period of combined hypoxia and hypotension.

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Rats were "stressed" by a 30-min period of hypoxia (FIO2 = 7.5%) and hypotension (x arterial pressure = 30 mm Hg), and then "resusciated" by restoring FIO2 = 30% and reinfusing shed blood to restore arterial pressure toward baseline values. Concentrations of brain phosphocreatine, ATP and lactate

Neuroprotective effect of hypothermia on neuronal injury in diffuse traumatic brain injury coupled with hypoxia and hypotension.

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It is well established in mechanical head trauma that posttraumatic secondary insults, such as hypoxia and hypotension exacerbate neuronal injury and lead to worse outcome. In this study, the neuroprotective effect of hypothermia on the reduction of supraventricular subcortical neuronal damage was

Fentanyl in the out-of-hospital setting: variables associated with hypotension and hypoxemia.

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BACKGROUND Previous out-of-hospital fentanyl analgesia studies are limited by retrospective nature or low numbers. OBJECTIVE This study sought to prospectively assess fentanyl safety in a large out-of-hospital group, to identify variables associated with post-fentanyl hypotension (HN; systolic blood

Hypotension and hypoxemia in the preterm newborn during the four days following delivery identify infants at risk of echosonographically demonstrable cerebral lesions.

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This prospective study of 130 preterm newborns at less than 34 weeks gestational age has examined the predictive value of abnormalities in continuously recorded newborn blood pressure, heart rate, and oxygen tension during the 4 d following delivery for echosonographically demonstrable cerebral

The role of bone cement for the development of intraoperative hypotension and hypoxia and its impact on mortality in hemiarthroplasty for femoral neck fractures.

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Background and purpose - The bone cement implantation syndrome characterized by hypotension and/or hypoxia is a well-known complication in cemented arthroplasty. We studied the incidence of hypotension and/or hypoxia in patients undergoing cemented or uncemented hemiarthroplasty for femoral neck

Effect of local change in O2 saturation of hemoglobin on cerebral vasodilation from hypoxia and hypotension.

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We tested the effect of certain newly synthesized allosteric modifiers of hemoglobin on the dilation induced by arterial hypoxia, arterial hypotension, and arterial hypercapnia in cerebral arterioles of anesthetized cats equipped with cranial windows for the observation of the cerebral

Isoflurane prevents learning deficiencies caused by brief hypoxia and hypotension in adult Sprague Dawley rats.

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BACKGROUND Hypotension causes histologic changes in the hippocampal CA1 area, while behavior remains unchanged. We believe that an even stronger insult may also cause behavioral changes. OBJECTIVE We used a rat hemorrhagic shock model plus temporary hypoxia to assess functional outcome at different

Reflex stimulation of aortic chemoreceptors through the stellate ganglion during hypoxia and hypotension in cats.

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1. In cats anaesthetized with sodium pentobarbitone (35 mg kg-1), an investigation was made of the mechanisms underlying the enhancement of aortic chemoreceptor activity through the excitatory effect mediated by the sympathetic outflow to them during hypoxia and hypotension. 2. Removal of the right

Hypoxia in the term newborn: part three--sepsis and hypotension, neurologic, metabolic and hematologic disorders.

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Causes of hypoxia and cyanosis in the term newborn can be found within all physiologic systems and take the form of hundreds of specific diagnoses. In the first and second parts of this series, a wide range of cardiac and pulmonary causes for newborn hypoxia and cyanosis have been examined. Because

Brain injury from marked hypoxia in cats: role of hypotension and hyperglycemia.

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The present study identifies several factors that govern brain pathologic response to marked hypoxia. None of 13 cats exposed to 25 minutes of marked hypoxia (FiO2 = 3.4%; PaO2 = 17 +/- 3 mm Hg, S.D.) that maintained mean arterial blood pressure (MABP) greater than 65 mm Hg were brain injured after

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