Activation of Partial Complex Seizures by Hyperventilation

Miley, Charles E.; Forster, Francis M.

doi:10.1001/archneur.1977.00500180065014

Cited by 75 publications

(55 citation statements)

References 11 publications

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“…One had a generalized tonic clonic seizure and 2 had very brief absence seizures. This is in contradiction with earlier studies that demonstrated that HV will induce a seizure in up to 50% of patients with generalized absence seizures [9], and in up to 4.4% of patients with partial epilepsy [8]. However, a recent study also concurred with our findings that HV-induced seizures are in fact much more rarely encountered than what was previously reported [5].…”

Section: Discussioncontrasting

confidence: 99%

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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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Section: Discussioncontrasting

confidence: 99%

“…Less impressive is the effect of HV on focal spikes. Overall, HV activation of focal epileptiform discharges is seen in less than 10% of the cases [5,8]. …”

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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“…The effect of therapeutic levels of anticon¬ vulsants on the response to hypoxia and hypercapnia is unknown, but studies of barbiturates for anesthesia have shown that while sedative doses do not depress ventilation, anesthetic doses sharply depress the ventilatory response to carbon dioxide.16·17 Hyperventilation is frequently an activator of seizures in patients with absence18 and complex partial sei¬ zures. 19 It is possible that, in some cases, the increase in minute ventila¬ tion and respiratory rate that occurs with swimming20·21 might have precip¬ itated a seizure while swimming and resulted in a submersion accident.…”

Section: Resultsmentioning

confidence: 99%

Submersion Accidents in Children With Epilepsy

Orlowski¹

1982

Arch Pediatr Adolesc Med

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“…The yield of epileptiform discharges increases if recording is done early after a seizure event 11 . Hyperventilation and photic stimulation also induces IEDs in many patients, especially in generalized seizures [13][14][15] . In a series of 2648 patients with unquestionable diagnosis of seizure by Kershman …”

Section: Discussionmentioning

confidence: 99%

Different Types of Epilepsy Based on Clinical and Electroencephalographic (EEG) Findings: Experience at Referral Neuroscience Hospital in Bangladesh

Hussain

Khan

Islam

et al. 2018

J. Natl Inst. Neurosci Bangladesh

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Background: A good history and a standard EEG recording help establish most of the epilepsy syndromes. Objective: The objective of this study was to establish different epilepsy syndromes on the basis of history and EEG in the clinically suspected seizure events. Methodology: This cross-sectional study was carried out in the neurophysiology laboratory of National Institute of Neurosciences & Hospital, Dhaka, Bangladesh from January 2013 to December 2015, which included 2549 patients. EEG was obtained through surface scalp electrodes according to international 10/20 system. Patient and their attendants were interviewed using a semi structured questionnaire. The EEG findings, clinical history and in appropriate cases the neuroimaging, CSF and hematological findings were then correlated. Result: Among the 2549 patients most were children (39.8% less than 10 years old) and young adult (30.63% in 11 to 20 years age group). Male patients outnumbered female (63% and 36 % respectively). The overall sensitivity of EEG in yielding abnormal interictal epileptiform discharges was 42%. About 32% of total 2549 patients were diagnosed as localization-related epilepsy (LRE), 5% idiopathic generalized epilepsy (IGE), 1.41% was Epileptic encephalopathy. Conclusion: In conclusion EEG is helpful in classifying the types of seizure, aids in defining the epilepsy syndrome, predicting the outcome and assists in management of patients. [Journal of National Institute of Neurosciences Bangladesh, 2017;3(1): 3-6]

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Activation of Partial Complex Seizures by Hyperventilation

Cited by 75 publications

References 11 publications

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

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

Submersion Accidents in Children With Epilepsy

Different Types of Epilepsy Based on Clinical and Electroencephalographic (EEG) Findings: Experience at Referral Neuroscience Hospital in Bangladesh

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