Computed tomography scan measurements of the globe and orbit to assess the risks of traumatic complications from medial peribulbar anaesthesia
Abstract Complications of peribulbar anaesthesia include retrobulbar haemorrhage, globe perforation and brainstem anaesthesia. Therefore, this study took measurements relating the proximity of medial canthus to the optic nerve and also the safe angle between orbit and globe using 200 multiplanar rec...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
BMC
2022-04-01
|
| Series: | BMC Anesthesiology |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s12871-022-01633-5 |
| _version_ | 1818014256529932288 |
|---|---|
| author | Jon Clarke Huey Ming Seah Aaron Foo Marc Agzarian Stewart Lake |
| author_facet | Jon Clarke Huey Ming Seah Aaron Foo Marc Agzarian Stewart Lake |
| author_sort | Jon Clarke |
| collection | DOAJ |
| description | Abstract Complications of peribulbar anaesthesia include retrobulbar haemorrhage, globe perforation and brainstem anaesthesia. Therefore, this study took measurements relating the proximity of medial canthus to the optic nerve and also the safe angle between orbit and globe using 200 multiplanar reconstructed computed tomography (CT) images of the orbit. The principal results show that in 1.5% of the sample, the optic nerve is within 20 mm of the medial canthus, with a minimum distance of 15 mm. One% have a safe angle of 10 degrees or less between bone and globe. None of the demographic data, nor axial length were predictive of these results. We have shown that there are a minority of patients with unusual orbital anatomy. This places them at a theoretical higher risk of complications. These cases are not currently predicted by measured data. |
| first_indexed | 2024-04-14T06:42:43Z |
| format | Article |
| id | doaj.art-37c5bf0ca3c24e8988b8359214bdbfaa |
| institution | Directory Open Access Journal |
| issn | 1471-2253 |
| language | English |
| last_indexed | 2024-04-14T06:42:43Z |
| publishDate | 2022-04-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Anesthesiology |
| spelling | doaj.art-37c5bf0ca3c24e8988b8359214bdbfaa2022-12-22T02:07:17ZengBMCBMC Anesthesiology1471-22532022-04-012211910.1186/s12871-022-01633-5Computed tomography scan measurements of the globe and orbit to assess the risks of traumatic complications from medial peribulbar anaesthesiaJon Clarke0Huey Ming Seah1Aaron Foo2Marc Agzarian3Stewart Lake4Department of Anaesthesia, Flinders Medical CentreSouth Australia Medical Imaging, Flinders Medical CentreFaculty of Medicine, Flinders UniversitySouth Australia Medical Imaging, Flinders Medical CentreDepartment of Ophthalmology, Flinders Medical CentreAbstract Complications of peribulbar anaesthesia include retrobulbar haemorrhage, globe perforation and brainstem anaesthesia. Therefore, this study took measurements relating the proximity of medial canthus to the optic nerve and also the safe angle between orbit and globe using 200 multiplanar reconstructed computed tomography (CT) images of the orbit. The principal results show that in 1.5% of the sample, the optic nerve is within 20 mm of the medial canthus, with a minimum distance of 15 mm. One% have a safe angle of 10 degrees or less between bone and globe. None of the demographic data, nor axial length were predictive of these results. We have shown that there are a minority of patients with unusual orbital anatomy. This places them at a theoretical higher risk of complications. These cases are not currently predicted by measured data.https://doi.org/10.1186/s12871-022-01633-5Peribulbar anaesthesiaComputed tomographyOrbital anatomy |
| spellingShingle | Jon Clarke Huey Ming Seah Aaron Foo Marc Agzarian Stewart Lake Computed tomography scan measurements of the globe and orbit to assess the risks of traumatic complications from medial peribulbar anaesthesia BMC Anesthesiology Peribulbar anaesthesia Computed tomography Orbital anatomy |
| title | Computed tomography scan measurements of the globe and orbit to assess the risks of traumatic complications from medial peribulbar anaesthesia |
| title_full | Computed tomography scan measurements of the globe and orbit to assess the risks of traumatic complications from medial peribulbar anaesthesia |
| title_fullStr | Computed tomography scan measurements of the globe and orbit to assess the risks of traumatic complications from medial peribulbar anaesthesia |
| title_full_unstemmed | Computed tomography scan measurements of the globe and orbit to assess the risks of traumatic complications from medial peribulbar anaesthesia |
| title_short | Computed tomography scan measurements of the globe and orbit to assess the risks of traumatic complications from medial peribulbar anaesthesia |
| title_sort | computed tomography scan measurements of the globe and orbit to assess the risks of traumatic complications from medial peribulbar anaesthesia |
| topic | Peribulbar anaesthesia Computed tomography Orbital anatomy |
| url | https://doi.org/10.1186/s12871-022-01633-5 |
| work_keys_str_mv | AT jonclarke computedtomographyscanmeasurementsoftheglobeandorbittoassesstherisksoftraumaticcomplicationsfrommedialperibulbaranaesthesia AT hueymingseah computedtomographyscanmeasurementsoftheglobeandorbittoassesstherisksoftraumaticcomplicationsfrommedialperibulbaranaesthesia AT aaronfoo computedtomographyscanmeasurementsoftheglobeandorbittoassesstherisksoftraumaticcomplicationsfrommedialperibulbaranaesthesia AT marcagzarian computedtomographyscanmeasurementsoftheglobeandorbittoassesstherisksoftraumaticcomplicationsfrommedialperibulbaranaesthesia AT stewartlake computedtomographyscanmeasurementsoftheglobeandorbittoassesstherisksoftraumaticcomplicationsfrommedialperibulbaranaesthesia |