A 47-year-old man with drug-resistant cryptogenic epilepsy, treated with vagus nerve stimulation (VNS), underwent polysomnography (PSG) for suspected obstructive sleep apnea (OSA). A previous PSG study, performed 1 year before VNS, had showed an apnea-hypopnea index (AHI) 5.4 events/hour, but the patient reported that the activation of the VNS was associated with increase of apneas witnessed by his bed partner. PSG was consistent with mild OSA; the AHI was 14.0 events/ hour. During PSG, the stimulator was active for periods of 30 seconds, generating a peculiar artifact (figure, black arrows), separated by a 3-minute interval. In 67% of the obstructive events (9.5 events/hour), the onset of the event was simultaneous or immediately followed the start of VNS activation, suggesting that VNS might trigger obstructive apneas/hypopneas1,2 (figure, white arrows).

Vollono, C., Fuggetta, F., Cioni, B., Della Marca, G., Teaching NeuroImages: Obstructive sleep apnea triggered by vagus nerve stimulation, <<NEUROLOGY>>, 2015; 85 (18): e140-e140. [doi:10.1212/WNL.0000000000002083] [http://hdl.handle.net/10807/79411]

Teaching NeuroImages: Obstructive sleep apnea triggered by vagus nerve stimulation

Vollono, Catello
Primo
;
Cioni, Beatrice
Penultimo
;
Della Marca, Giacomo
Ultimo
2015

Abstract

A 47-year-old man with drug-resistant cryptogenic epilepsy, treated with vagus nerve stimulation (VNS), underwent polysomnography (PSG) for suspected obstructive sleep apnea (OSA). A previous PSG study, performed 1 year before VNS, had showed an apnea-hypopnea index (AHI) 5.4 events/hour, but the patient reported that the activation of the VNS was associated with increase of apneas witnessed by his bed partner. PSG was consistent with mild OSA; the AHI was 14.0 events/ hour. During PSG, the stimulator was active for periods of 30 seconds, generating a peculiar artifact (figure, black arrows), separated by a 3-minute interval. In 67% of the obstructive events (9.5 events/hour), the onset of the event was simultaneous or immediately followed the start of VNS activation, suggesting that VNS might trigger obstructive apneas/hypopneas1,2 (figure, white arrows).
Inglese
Vollono, C., Fuggetta, F., Cioni, B., Della Marca, G., Teaching NeuroImages: Obstructive sleep apnea triggered by vagus nerve stimulation, <<NEUROLOGY>>, 2015; 85 (18): e140-e140. [doi:10.1212/WNL.0000000000002083] [http://hdl.handle.net/10807/79411]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10807/79411
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