hypovolemia/hypoxia

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Altered Cerebral Blood Flow and Potential Neuroprotective Effect of Human Relaxin-2 (Serelaxin) During Hypoxia or Severe Hypovolemia in a Sheep Model.

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Specific neuroprotective strategies to minimize cerebral damage caused by severe hypoxia or hypovolemia are lacking. Based on previous studies showing that relaxin-2/serelaxin increases cortical cerebral blood flow, we postulated that serelaxin might provide a neuroprotective effect. Therefore, we

Effect of hypoxemia and hypovolemia on retinal and choroidal blood flow in the newborn piglet.

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The effect of hypoxemia and/or hypovolemia on ocular blood flow was studied in paralyzed and mechanically ventilated newborn piglets with the isotope-labelled microsphere method. Twenty-six piglets were studied in four different groups. One group of piglets (n = 6) was made hypoxemic by breathing

[Effect of hypoxia on gastric secretion of hypovolemic rats].

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Gastric secretion was checked in two groups of rats with pyloric ligature and experimental hypovolemia subjecting one of the groups to acute hypoxia; in this group there was significant decrease in volume, acid and pepsin secretion and potassium concentration in gastric contents. In gastric mucosa

[Comparative study of the gastric response in rats with pyloric ligation -- normovolemic rats and rats made hypovolemic by acute hemorrhage -- subjected to hypoxia].

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Gastric secretion was studied in two groups of rats in which pyloric ligature was made according to Dai's method. Both groups were put in a hypopressure chamber. One of the groups was normovolemic. The other group was made hypovolemic by acute bleeding. The following parameters were checked in

Effects of controlled hypoxemia or hypovolemia on global and intestinal oxygenation and perfusion in isoflurane anesthetized horses receiving an alpha-2-agonist infusion.

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BACKGROUND Aim of this prospective experimental study was to assess effects of systemic hypoxemia and hypovolemia on global and gastrointestinal oxygenation and perfusion in anesthetized horses. Therefore, we anesthetized twelve systemically healthy warmblood horses using either xylazine or

The influence of acute hypoxemia and hypovolemic hypotension of neuronal brain activity measured by the cerebral function monitor in newborn piglets.

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Little is known about the cerebral electrical response to short periods of hypoxemia, hypotension and their combination. These conditions occur frequently in critically ill newborn infants; their cerebral electrical activity can be registrated easily with the Cerebral Function Monitor (CFM).

Influence of aging on cerebral derangement by acute severe hypoxia during hypovolemic hypotension.

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In synaptosomes isolated from the motor area of the cerebral cortex of beagle dogs and incubated in Krebs-Henseleit-Hepes buffer (for 10 min at 24 degrees C), the energetic state was defined by the balance of the labile phosphates (ATP, ADP, AMP, and creatine phosphate), the redox state of the

Synergistic deleterious effect of hypoxemia and hypovolemia on microcirculation in intestinal villi*.

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OBJECTIVE To investigate the effect of hypoxemia, hemorrhagic shock, and the association of both of these on intestinal microcirculation (microcirculatory perfusion and leukocytes-endothelium interactions in postcapillary venules), as it can be encountered in hemorrhagic shock following

Intraoperative hypoxia and hypotension caused by gastrografin-induced hypovolemia.

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Effect of acute compression, hypoxia, hypothermia and hypovolemia on the evoked potentials of the spinal cord.

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[Hyperventilation and hypovolemia in competitive sports in median altitudes. The role of hypoxia in "breakdowns" during the Olympic Games 1968 in Mexico City].

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[Hypovolemic shocks simulating severe pulmonary embolism. 20 cases].

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Twenty cases of hypovolemic shock of various etiologies in which initial diagnosis was massive pulmonary embolism are analyzed. The error was due to intensity of respiratory failure symptoms and electrocardiographic changes suggesting acute cor pulmonale. However, although constant, hypoxemia was

Effect of hypovolemic hypotension on the cerebral oxygen supply of rats with slightly raised or lowered body temperatures.

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Combination effects of hypovolemia and body cooling or warming being important for laboratory animals, accident victims, hemorrhagic patients, etc. have been investigated in the anesthetized rat brain. Combined hypovolemic hypotension (MAP +/- SD = 36 +/- 7 mm Hg) and additional cooling (32 degrees)

Assessment of the fetal PO2 changes by cerebral and umbilical Doppler on lamb fetuses during acute hypoxia.

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The objective of the present study was to validate one or a combination of fetal Doppler parameters in order to assess acute fetal hypoxia in an ovine model. Acute hypoxia was induced by reducing umbilical, or maternal aortic flow (approx. 70%). A CW Doppler probe was fixed on the fetal cervical

Hypoxia increases nitric oxide concentrations that are not completely inhibited by L-NMMA.

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BACKGROUND Recent investigations have demonstrated a wealth of knowledge about the biology of nitric oxide (NO) and the synthases (NOS) that generate it, under both physiologic and pathophysiologic conditions. In this study, we investigated the generation of NO under conditions of hypoxia in the

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