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Query: UMLS:C0184567 (acute pain)
 3,962 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The so-called Vertex Potential (VP) of human scalp-conducted and event related brain potential (ERBP), which occur as a slow and often large, biphasic sinusoid within the 100-400 msec time segment after transient stimulation in the three main sensory modalities, are the longest researched of all human evoked potential (EP) phenomena. Its variable amplitude has been directly correlated, in experiments expressly tailored for the purpose, with input/output variables such as the rate of acceleration of given stimulus parameters from a state of relative rest (RM function), interstimulus interval (ISI), stimulus intensity, skin potential and resistance changes (SPR and SRR), the peripheral electroneurogram (ENG), and experimentally isolated C-fiber afference; and with neuropsychological variables such as attention or vigilance, visual acuity, response time, subjective stimulus probability or expectancy, acute pain of both fast and slow kinds, intelligence quotient (IQ), and psychometric personality scores (e.g., extraversion versus introversion and neuroticism versus normality). Unfortunately, the cerebral, neural origins of the VP, if any, are unknown; it is reported as usually absent from cortex-surface EP in those primates and mammals hitherto studied, and also from human extracranial event related magnetic fields of the brain (ERMFb) insofar as these reveal only superficial tangential sources; but a possible analog has been recorded from deep subcortical electrodes during human neurosurgery. In view of the increasing published range and quantity of direct correlates of VP amplitude, and of the scarcity of data about its neuroanatomy and neurophysiology, it seemed a good idea to do some rudimentary signal analysis. Preliminary results from five subjects confirm earlier data: The VP of somatosensory (SEP) and auditory (AEP) evoked potentials, as obtained by scalp-conductance and either averaged or single-epoch, can be resolved into inconsistently stimulus synchronized frequency components which are also present as relatively unsynchronized waves in the theta and alpha bands (approx. 2-13 Hz) of the unstimulated or near-threshold-stimulated electroencephalogram (EEG). In averages of numerous single trials (20 less than N less than 102), initiated at interstimulus intervals longer than 2.5 sec and deliberately sequenced so that the initiator could learn to estimate the timing of stimulus onsets, the phase coherence of the power-dominant alpha and theta waves within the 100-400 msec time segment of ERBP is obvious when the stimulus is an intense transient and psychologically not "habituated".(ABSTRACT TRUNCATED AT 400 WORDS)
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PMID:Event related aspects of somatosensory and auditory evoked potentials: noise or signals? 401 48

The Spanish Group for Children's Pain Study was created in 2017 in an aim to prevent, remove or reduce pain in neonates, infants, children, and adolescents. Along with a diagnosis of pain, a paediatric patient may suffer from acute or chronic pain, neuropathic, nociceptive, or mixed pain, as well as pain from procedures, and post-surgical pain. Pain suffering is too often ignored and not diagnosed. As a result of this, pain prevention and pain treatment fails. Acute pain prevalence in scientific literature is estimated to be between 22% (procedures pain) and 77% (pain on patients in emergency departments and in hospital wards). Furthermore, up to 30% of children could suffer from chronic pain during their childhood. Among the barriers detected in pain management are: difficult assesment caused by a lack of unity in pain registry, difficuties due to the choice of an assessment pain scale (according to age and type of pain), and the absence of training in the management and interpretation of these pain scales. Additionally, in some health areas there is a high workload pressure and generally there are communication difficulties between professionals, and between them and families. From this AEP working group our clear positioning is expressed in the recommendation of the systematic assessment and recording of pain in all children treated in the health system, thus considering pain as the fifth constant to be determined after the other vital signs.
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PMID:[Position document of the spanish association of paediatrics group for the study of paediatric pain on the recording of pain as fifth vital sign]. 3117 71