Use of short term video EEG in the diagnosis of attack disorders

McGonigal, Aileen; Russell, Aline; Mallik, Arup; Oto, Maria; Duncan, Roderick

doi:10.1136/jnnp.2003.024893

Cited by 66 publications

(37 citation statements)

References 3 publications

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“…One commonly described effect is the induction of non-habitual events (Bazil et al, 1994;Benbadis et al, 2004;McGonigal et al, 2004;Varela et al, 2007;Walczak et al, 1994). Using hyperventilation and photic stimulation non-habitual events are reported in 3-13% of cases (Benbadis et al, 2004;McGonigal et al, 2004;Varela et al, 2007); in saline-based SSI studies it is 10% and 23% respectively (Bazil et al, 1994;Walczak et al, 1994).…”

Section: Risks and Side Effectsmentioning

confidence: 97%

“…This is an elegant bypass of the ethical dilemma of implied misinformation posed by placebo injections (Benbadis et al, 2000;Hoepner et al, 2013). These methods have been tested repeatedly in an outpatient setting with diagnostic yields of 64-69% in suspected PNES (Benbadis et al, 2004;McGonigal et al, 2002;Varela et al, 2007) and 36% in all "attack disorders" (McGonigal et al, 2004).…”

Section: Page 10 Of 26mentioning

confidence: 98%

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A systematic review of suggestive seizure induction for the diagnosis of psychogenic nonepileptic seizures

Popkirov

Grönheit

Wellmer

2015

Seizure

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Suggestive seizure induction is a widely used method for diagnosing psychogenic nonepileptic seizures (PNES). Despite seven decades of multidisciplinary research, however, there is still no unified protocol, no definitive agreement on the ethical framework and no consensus on diagnostic utility. This systematic review surveys the evidence at hand and addresses clinically relevant aspects of suggestive seizure induction. In addition to its use for facilitating the diagnostic process, its mechanism of action and utility in elucidating the psychopathology of PNES will be discussed.

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Section: Risks and Side Effectsmentioning

confidence: 97%

Section: Page 10 Of 26mentioning

confidence: 98%

A systematic review of suggestive seizure induction for the diagnosis of psychogenic nonepileptic seizures

Popkirov

Grönheit

Wellmer

2015

Seizure

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“…This is particularly true in patients with anxiety-related disorders and HV syndrome. The importance of HV in activating psychogenic nonepileptic seizures was recently reported [10]. …”

Section: Discussionmentioning

confidence: 99%

Reexamining the Added Value of Intermittent Photic Stimulation and Hyperventilation in Routine EEG Practice

Ahdab

Riachi

2013

Eur Neurol

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Objective: Investigate the added value of hyperventilation (HV) and intermittent photic stimulation (IPS) to the routine electroencephalogram (EEG). Method: This is a retrospective review of 1,172 successive EEGs. The records with evidence of epileptogenic activity were identified and further analyzed to identify if the activation techniques could trigger the expression of epileptic activity not seen otherwise in the nonactivated tracing. Results: Activation procedures provided additional information in 9.5% of the abnormal EEG files. They helped establish the diagnosis of an epileptic disorder or further characterize the epileptic syndrome. This occurred exclusively in the younger age group (age <36 years), and predominantly in women. Conclusion: IPS and HV are easy to perform and remain important adjuncts to routine EEG. They may trigger the expression of epileptogenic activity in an otherwise uneventful EEG. Whereas their diagnostic value was obvious in the younger age group, we found no evidence to support their usefulness in the middle-age and elderly groups.

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“…Short video EEG is an out-patient test which uses activation or suggestion techniques (including photic stimulation and hyperventilation) aiming to induce a typical seizure. This test represents a cost-effective and accurate diagnostic technique for PNES, with a diagnostic yield of 50-60% (McGonigal 2004).…”

Section: Diagnostic Testsmentioning

confidence: 99%

Psychogenic non-epileptic seizures: aetiology, diagnosis and management

Oto¹,

Reuber²

2014

Adv. psychiatr. treat

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SummaryPsychogenic non-epileptic seizures (PNES) have a significant impact on most patients in terms of distress, disability, loss of income and iatrogenic harm. Three-quarters of patients with PNES are initially misdiagnosed and treated for epilepsy. Misdiagnosis exposes patients to multiple iatrogenic harms and prevents them from accessing psychological treatment. In most cases, the patient's history (and witness accounts) should alert clinicians to the likely diagnosis of PNES. Since this diagnosis may be resisted by patients and may involve ‘un-diagnosing’ epilepsy, video-electroencephalogram recording of typical seizures is often helpful. The underlying causes of PNES are diverse: a model combining predisposing, precipitating and perpetuating factors is a useful way of conceptualising their aetiology. The initial step of treatment should be to limit iatrogenic harm. There is some evidence for the effectiveness of psychotherapy.

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Use of short term video EEG in the diagnosis of attack disorders

Cited by 66 publications

References 3 publications

A systematic review of suggestive seizure induction for the diagnosis of psychogenic nonepileptic seizures

A systematic review of suggestive seizure induction for the diagnosis of psychogenic nonepileptic seizures

Reexamining the Added Value of Intermittent Photic Stimulation and Hyperventilation in Routine EEG Practice

Psychogenic non-epileptic seizures: aetiology, diagnosis and management

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