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عمومی::
نور اپینفرین
Will the administration of a1-agonists (phen- ylephrine, norepinephrine) reduce CBF?
Norepinephrine can increase CBF, but such increases might occur if autoregulation were defec- tive or its limit exceeded. �-Mimetic drugs (norepinephrine has �1 activity) may cause activation of cerebral metabo- lism25 with a coupled increase in CBF.
Collectively, these data suggest that norepinephrine and phenylephrine maintain cerebral perfusion.
In human volunteers, a norepinephrine-induced increase in arterial blood pressure slightly reduced MCAfv and cerebral oxy- gen saturation (Sco2) and SjVo2.32 By contrast, although phenylephrine decreased rSO2, MCAfv was increased and SjVo2 was unchanged.33 These data have led to the question of whether phenylephrine and norepinephrine administration negatively impact cerebral oxygenation.
Although norepinephrine decreased SjVo2 by approximately 3% (a mild reduction at best), its administration has been previously shown to
واژگان شبکه مترجمین ایران
2
روان شناسی و مشاوره::
نور اپی نفرین
Increased technological advances have contributed to our understanding of the different brain structures (frontal system, cingulated gyrus) and functions that are involved in indi- viduals with ADHD and the role of the catecholamines (dopamine, norepinephrine, epineph- rine) associated with attention and motor activity.
The catecholamines (dopamine, norepinephrine, epinephrine) have been associated with atten- tion and motor activity.
Non-stimulant medication: Atoxamine (Strattera) is a nonstimulant SSRI that slows the reab- sorption of the norepinephrine that is naturally produced in the body.
Brain structures (frontal system, cingulated gyrus), functions (executive functions), and neurotransmitters (catecholamines, dopamine, norepinephrine, epinephrine) associated with attention and motor activity have all been implicated in the etiology and mainte- nance of ADHD symptoms.
There is evidence that irregular activity of the neurotransmitter norepinephrine may play a role in the onset of panic attacks.
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