PubMed · 1097157
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P Randall. 1975. Cleft lip.. https://pubmed.ncbi.nlm.nih.gov/1097157/
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Canker sores and cold sores are common, relatively banal diseases of the oral mucosa and lips, occurring most often in young persons. Some otherwise healthy patients may have a more severe variant, such as major aphthous ulcers, recurring lesions of aphthous stomatitis, or acute herpetic gingivostomatitis. Other patients may present with severe recurrent herpes simplex labialis or chronic oral candidiasis, and in these patients an immunodeficiency state must be considered.
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Sphenoidal electrodes are used to localize epileptiform activity originating in the temporal lobe during complex partial seizures. Sphenoidal electrodes, however, are semi-invasive and uncomfortable to the patient. We compared skin electrodes placed on the cheek ("cheek electrodes") with sphenoidal electrodes for the detection of the side and site of complex partial seizure onset. In a masked, randomized comparison of single ictal recordings in 22 patients, there were no significant differences between sphenoidal and cheek electrode montages in detecting the side or site of ictal onset (P < 0.01). Signal/noise ratios for interictal spikes were a mean 16.5% greater at sphenoidal sites compared to cheek sites (paired t test, t = 2.4, P < 0.05). This difference, however, did not influence the detection of rhythmical ictal activity in cheek and sphenoidal montages in our study, nor the assignment of side, site or time of seizure onset by unbiased readers. Recordings from cheek electrodes are comparable to those from sphenoidal electrodes and are useful for localizing ictal activity.