Measurement and implications of the distance between the sphenopalatine ganglion and nasal mucosa: a neuroimaging study
| Autor: | David W. Dodick, Irina Aschehoug, Joan Vidal Crespi, Daniel Fossum Bratbak, Erling Tronvik, Manjit Matharu, Kent Are Jamtøy |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Nasal cavity
Adult Male Headache Disorders Migraine Disorders Pterygopalatine Fossa Block Sphenopalatine Ganglion Block Connective tissue lcsh:Medicine Mucous membrane of nose Neuroimaging 03 medical and health sciences 0302 clinical medicine 030202 anesthesiology medicine Humans Anesthetics Local Local anaesthetics Pterygopalatine ganglion Administration Intranasal Aged Analysis of Variance business.industry lcsh:R Sphenopalatine ganglion General Medicine Anatomy Middle Aged Neurovascular bundle Ganglion Nasal Mucosa Anesthesiology and Pain Medicine medicine.anatomical_structure Intranasal Nasal administration Sphenopalatine foramen Female Neurology (clinical) business 030217 neurology & neurosurgery Research Article |
| Zdroj: | The Journal of Headache and Pain The Journal of Headache and Pain, Vol 19, Iss 1, Pp 1-10 (2018) 19:14 |
| ISSN: | 1129-2377 1129-2369 |
| Popis: | Background Historical reports describe the sphenopalatine ganglion (SPG) as positioned directly under the nasal mucosa. This is the basis for the topical intranasal administration of local anaesthetic (LA) towards the sphenopalatine foramen (SPF) which is hypothesized to diffuse a distance as short as 1mm. Nonetheless, the SPG is located in the sphenopalatine fossa, encapsulated in connective tissue, surrounded by fat tissue and separated from the nasal cavity by a bony wall. The sphenopalatine fossa communicates with the nasal cavity through the SPF, which contains neurovascular structures packed with connective tissue and is covered by mucosa in the nasal cavity. Endoscopically the SPF does not appear open. It has hitherto not been demonstrated that LA reaches the SPG using this approach. Methods Our group has previously identified the SPG on 3T-MRI images merged with CT. This enabled us to measure the distance from the SPG to the nasal mucosa covering the SPF in 20 Caucasian subjects on both sides (n=40 ganglia). This distance was measured by two physicians. Interobserver variability was evaluated using the intraclass correlation coefficient (ICC). Results The mean distance from the SPG to the closest point of the nasal cavity directly over the mucosa covering the SPF was 6.77 mm (SD 1.75; range, 4.00-11.60). The interobserver variability was excellent (ICC 0.978; 95% CI: 0.939-0.990, p |
| Databáze: | OpenAIRE |
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