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9 Possible Causes for Theta Coma Pattern

  • Coma

    1 August 2007 Cosmos Online A brain-damaged man, trapped in a coma-like state for six years, has been brought back to consciousness by doctors who planted electrodes deep inside his brain. Shock wave: The doctors implanted DBS electrodes in the central thalamus, a region that plays a key role in regulating sleep[…][web.archive.org]

  • Stroke

    Its meaning is the same as the pattern of alpha coma and, in some records, the two standards can coexist (alpha-theta coma) 35.[scielo.br] The pathogenesis of alpha, theta or alpha-theta coma is still unknown and the value of these patterns in predicting outcome remains controversial 35.[scielo.br] […] and spindles coma patterns, etc.).[scielo.br]

  • Minimally Conscious State

    Correspondence analysis of researched factors: photo reaction, corneal, tracheal, oculo-cephalic reflexes, localization of sound and pain, EEG patterns, coma outcome revealed[n.neurology.org] Indeed, it has been demonstrated that a pattern of unvarying activity with the major frequency component in the delta–slow-theta (1–3 Hz) band predicts poor prognosis [16][journals.plos.org] Spectral power analysis revealed that alpha and theta power was significantly lower in VS than in MCS patients, whereas delta power showed the opposite pattern.[academic.oup.com]

  • Locked-in Syndrome

    Other forms of activities that may be seen include periodic complexes, marked suppression, epileptiform activity, burst suppression, alpha theta coma patterns etc.[ecronicon.com] EEG may be normal or it can show alpha coma pattern with or without unreactive alpha rhythm to multimodal stimuli.[ecronicon.com] Alpha-theta coma and spindle coma may be seen. A correlation may be seen between the clinical outcome and the initial EEG grade.[ecronicon.com]

  • Hyperargininemia

    The electroencephalographic (EEG) pattern during hyperammonemic coma is one of low voltage with slow waves and asymmetric delta and theta waves.[clinicalgate.com] Clinical manifestations appear between 24 and 72 hours of age, starting as a poor suck, hypotonia, vomiting, lethargy, and hyperventilation with rapid progression to coma[clinicalgate.com] The tracing may demonstrate a burst suppression pattern, and the duration of the interburst interval may correlate with the height of ammonia levels [ Clancy and Chung, 1991[clinicalgate.com]

  • Hypoxic-Ischemic Brain Injury

    Its meaning is the same as the pattern of alpha coma and, in some records, the two standards can coexist (alpha-theta coma) 35.[scielo.br] Fatal outcome is also common with the "nonreactive type of alpha pattern coma" and the recently reported "theta pattern coma."[researchgate.net] “Alpha-coma” denotes the conjunction of clinical coma with an electroencephalographic pattern resembling that of normal wakefulness and predominantly consisting of alpha activity[neurologyindia.com]

  • Japanese Encephalitis

    Various electroencephalographic abnormalities include the presence of alpha, theta, and delta coma, and epileptiform conditions [14], [25].[doi.org] In fatal cases, patients ultimately slip into an acute coma.[doi.org] Symptoms of brainstem infection include changes in the respiratory pattern, flexor and extensor posturing, and abnormalities in the papillary and occulocephalic reflexes [[doi.org]

  • Citrin Deficiency

    The electroencephalographic (EEG) pattern during hyperammonemic coma is one of low voltage with slow waves and asymmetric delta and theta waves.[clinicalgate.com] Clinical manifestations appear between 24 and 72 hours of age, starting as a poor suck, hypotonia, vomiting, lethargy, and hyperventilation with rapid progression to coma[clinicalgate.com] The tracing may demonstrate a burst suppression pattern, and the duration of the interburst interval may correlate with the height of ammonia levels [ Clancy and Chung, 1991[clinicalgate.com]

  • Persistent Vegetative State

    Indeed, it has been demonstrated that a pattern of unvarying activity with the major frequency component in the delta–slow-theta (1–3 Hz) band predicts poor prognosis [16][journals.plos.org] These studies suggest that EEG may have a prognostic value in predicting the outcome of a traumatic coma.[journals.plos.org]

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