Electroretinography in the normal koala (Phascolarctos cinereus)
Objective To perform electroretinography on normal anesthetized koalas (Phascolarctos cinereus). Animals studied Six hospitalized koalas. Procedure The koalas were anesthetized using alfaxalone intramuscularly and isoflurane via face mask, then maintained on isoflurane after endotracheal intubation....
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| Veröffentlicht in: | Veterinary ophthalmology 2015-01, Vol.18 (s1), p.74-80 |
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| creator | Liddle, Vicki L. |
| description | Objective
To perform electroretinography on normal anesthetized koalas (Phascolarctos cinereus).
Animals studied
Six hospitalized koalas.
Procedure
The koalas were anesthetized using alfaxalone intramuscularly and isoflurane via face mask, then maintained on isoflurane after endotracheal intubation. After 20 min of dark adaptation, electroretinograms were obtained using a handheld electroretinography (ERG) machine using a single flash protocol at three light intensities: 10 mcd s/m2, 3000 mcd s/m2, and 10 000 mcd s/m2.
Results
At 10 mcd s/m2, the mean b‐wave amplitude and implicit time were 49.5 μV (SD ± 33.1 and 95% CI 29.9–69.0) and 87.4 ms (SD ± 6.5 and 95% CI 83.6‐91.2). At 3000 mcd s/m2, the mean a‐wave amplitude and implicit time were 70.5 μV (SD ± 30.7 and 95% CI 52.3–88.7) and 20.6 ms (SD ± 3.1 and 95% CI 18.7–22.4), and the mean b‐wave amplitude and implicit time were 122.8 μV (SD ± 49.3 and 95% CI 93.7–151.9) and 63.1 ms (SD ± 13.2 and 95% CI 55.3–71.0). At 10 000 mcd sm2, the mean a‐wave amplitude and implicit time were 90.8 μV (SD ± 37.2 and 95% CI 68.8–112.8) and 16.1 ms (SD ± 3.1 and 95% CI 14.3–18.0), and the mean b‐wave amplitude and implicit time were 148.3 μV (SD ± 54.9 and 95% CI 115.9–180.8) and 67.4 ms (SD ± 8.4 and 95% CI 62.5–72.3).
Conclusion
Electroretinography in koalas is practical using a portable ERG system and a DTL thread electrode and allows for rapid assessment of retinal function. |
| doi_str_mv | 10.1111/vop.12133 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_1652398297</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>1652398297</sourcerecordid><originalsourceid>FETCH-LOGICAL-c4333-912892490867a9a26cfce5e7ec5aa7a179be21d32c7af0f07c594c83825d32e73</originalsourceid><addsrcrecordid>eNp1kMtOwkAUhidGI4gufAHTpSwKc2k7nZ2GYDXhtvCynAzDqVRKB2dalbe3WGDn2ZyTk-__Fj9C1wT3SD39L7PpEUoYO0FtEkTMDykNTo83iVrowrkPjDELMT9HLRowKkQctdHdMAddWmOhzArzbtVmufWywiuX4BXGrlXurYzKlXc7WyqnTa6sLo3zdFaAhcp1L9FZqnIHV_vdQS8Pw-fBoz-aJk-D-5GvA8aYLwiNBQ0EjiOuhKKRTjWEwEGHSnFFuJgDJQtGNVcpTjHXoQh0zGIa1k_grINuG-_Gms8KXCnXmdOQ56oAUzlJopAyEVOxQ7sNqq1xzkIqNzZbK7uVBMtdYbIuTP4VVrM3e201X8PiSB4aqoF-A3xnOWz_N8nX6eyg9JtE5kr4OSaUXcmIMx7Kt0kix2Q2TniSyAn7BRk2g2Y</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1652398297</pqid></control><display><type>article</type><title>Electroretinography in the normal koala (Phascolarctos cinereus)</title><source>MEDLINE</source><source>Access via Wiley Online Library</source><creator>Liddle, Vicki L.</creator><creatorcontrib>Liddle, Vicki L.</creatorcontrib><description>Objective
To perform electroretinography on normal anesthetized koalas (Phascolarctos cinereus).
Animals studied
Six hospitalized koalas.
Procedure
The koalas were anesthetized using alfaxalone intramuscularly and isoflurane via face mask, then maintained on isoflurane after endotracheal intubation. After 20 min of dark adaptation, electroretinograms were obtained using a handheld electroretinography (ERG) machine using a single flash protocol at three light intensities: 10 mcd s/m2, 3000 mcd s/m2, and 10 000 mcd s/m2.
Results
At 10 mcd s/m2, the mean b‐wave amplitude and implicit time were 49.5 μV (SD ± 33.1 and 95% CI 29.9–69.0) and 87.4 ms (SD ± 6.5 and 95% CI 83.6‐91.2). At 3000 mcd s/m2, the mean a‐wave amplitude and implicit time were 70.5 μV (SD ± 30.7 and 95% CI 52.3–88.7) and 20.6 ms (SD ± 3.1 and 95% CI 18.7–22.4), and the mean b‐wave amplitude and implicit time were 122.8 μV (SD ± 49.3 and 95% CI 93.7–151.9) and 63.1 ms (SD ± 13.2 and 95% CI 55.3–71.0). At 10 000 mcd sm2, the mean a‐wave amplitude and implicit time were 90.8 μV (SD ± 37.2 and 95% CI 68.8–112.8) and 16.1 ms (SD ± 3.1 and 95% CI 14.3–18.0), and the mean b‐wave amplitude and implicit time were 148.3 μV (SD ± 54.9 and 95% CI 115.9–180.8) and 67.4 ms (SD ± 8.4 and 95% CI 62.5–72.3).
Conclusion
Electroretinography in koalas is practical using a portable ERG system and a DTL thread electrode and allows for rapid assessment of retinal function.</description><identifier>ISSN: 1463-5216</identifier><identifier>EISSN: 1463-5224</identifier><identifier>DOI: 10.1111/vop.12133</identifier><identifier>PMID: 24329986</identifier><language>eng</language><publisher>England: Blackwell Publishing Ltd</publisher><subject>Animals ; electroretinography ; Electroretinography - methods ; Electroretinography - veterinary ; eye ; Female ; koala ; Male ; marsupial ; Phascolarctidae - physiology ; retina ; Retina - physiology ; vision</subject><ispartof>Veterinary ophthalmology, 2015-01, Vol.18 (s1), p.74-80</ispartof><rights>2013 American College of Veterinary Ophthalmologists</rights><rights>2013 American College of Veterinary Ophthalmologists.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4333-912892490867a9a26cfce5e7ec5aa7a179be21d32c7af0f07c594c83825d32e73</citedby><cites>FETCH-LOGICAL-c4333-912892490867a9a26cfce5e7ec5aa7a179be21d32c7af0f07c594c83825d32e73</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1111%2Fvop.12133$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2Fvop.12133$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/24329986$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Liddle, Vicki L.</creatorcontrib><title>Electroretinography in the normal koala (Phascolarctos cinereus)</title><title>Veterinary ophthalmology</title><addtitle>Vet Ophthalmol</addtitle><description>Objective
To perform electroretinography on normal anesthetized koalas (Phascolarctos cinereus).
Animals studied
Six hospitalized koalas.
Procedure
The koalas were anesthetized using alfaxalone intramuscularly and isoflurane via face mask, then maintained on isoflurane after endotracheal intubation. After 20 min of dark adaptation, electroretinograms were obtained using a handheld electroretinography (ERG) machine using a single flash protocol at three light intensities: 10 mcd s/m2, 3000 mcd s/m2, and 10 000 mcd s/m2.
Results
At 10 mcd s/m2, the mean b‐wave amplitude and implicit time were 49.5 μV (SD ± 33.1 and 95% CI 29.9–69.0) and 87.4 ms (SD ± 6.5 and 95% CI 83.6‐91.2). At 3000 mcd s/m2, the mean a‐wave amplitude and implicit time were 70.5 μV (SD ± 30.7 and 95% CI 52.3–88.7) and 20.6 ms (SD ± 3.1 and 95% CI 18.7–22.4), and the mean b‐wave amplitude and implicit time were 122.8 μV (SD ± 49.3 and 95% CI 93.7–151.9) and 63.1 ms (SD ± 13.2 and 95% CI 55.3–71.0). At 10 000 mcd sm2, the mean a‐wave amplitude and implicit time were 90.8 μV (SD ± 37.2 and 95% CI 68.8–112.8) and 16.1 ms (SD ± 3.1 and 95% CI 14.3–18.0), and the mean b‐wave amplitude and implicit time were 148.3 μV (SD ± 54.9 and 95% CI 115.9–180.8) and 67.4 ms (SD ± 8.4 and 95% CI 62.5–72.3).
Conclusion
Electroretinography in koalas is practical using a portable ERG system and a DTL thread electrode and allows for rapid assessment of retinal function.</description><subject>Animals</subject><subject>electroretinography</subject><subject>Electroretinography - methods</subject><subject>Electroretinography - veterinary</subject><subject>eye</subject><subject>Female</subject><subject>koala</subject><subject>Male</subject><subject>marsupial</subject><subject>Phascolarctidae - physiology</subject><subject>retina</subject><subject>Retina - physiology</subject><subject>vision</subject><issn>1463-5216</issn><issn>1463-5224</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp1kMtOwkAUhidGI4gufAHTpSwKc2k7nZ2GYDXhtvCynAzDqVRKB2dalbe3WGDn2ZyTk-__Fj9C1wT3SD39L7PpEUoYO0FtEkTMDykNTo83iVrowrkPjDELMT9HLRowKkQctdHdMAddWmOhzArzbtVmufWywiuX4BXGrlXurYzKlXc7WyqnTa6sLo3zdFaAhcp1L9FZqnIHV_vdQS8Pw-fBoz-aJk-D-5GvA8aYLwiNBQ0EjiOuhKKRTjWEwEGHSnFFuJgDJQtGNVcpTjHXoQh0zGIa1k_grINuG-_Gms8KXCnXmdOQ56oAUzlJopAyEVOxQ7sNqq1xzkIqNzZbK7uVBMtdYbIuTP4VVrM3e201X8PiSB4aqoF-A3xnOWz_N8nX6eyg9JtE5kr4OSaUXcmIMx7Kt0kix2Q2TniSyAn7BRk2g2Y</recordid><startdate>201501</startdate><enddate>201501</enddate><creator>Liddle, Vicki L.</creator><general>Blackwell Publishing Ltd</general><scope>BSCLL</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>201501</creationdate><title>Electroretinography in the normal koala (Phascolarctos cinereus)</title><author>Liddle, Vicki L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4333-912892490867a9a26cfce5e7ec5aa7a179be21d32c7af0f07c594c83825d32e73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Animals</topic><topic>electroretinography</topic><topic>Electroretinography - methods</topic><topic>Electroretinography - veterinary</topic><topic>eye</topic><topic>Female</topic><topic>koala</topic><topic>Male</topic><topic>marsupial</topic><topic>Phascolarctidae - physiology</topic><topic>retina</topic><topic>Retina - physiology</topic><topic>vision</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Liddle, Vicki L.</creatorcontrib><collection>Istex</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Veterinary ophthalmology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Liddle, Vicki L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Electroretinography in the normal koala (Phascolarctos cinereus)</atitle><jtitle>Veterinary ophthalmology</jtitle><addtitle>Vet Ophthalmol</addtitle><date>2015-01</date><risdate>2015</risdate><volume>18</volume><issue>s1</issue><spage>74</spage><epage>80</epage><pages>74-80</pages><issn>1463-5216</issn><eissn>1463-5224</eissn><abstract>Objective
To perform electroretinography on normal anesthetized koalas (Phascolarctos cinereus).
Animals studied
Six hospitalized koalas.
Procedure
The koalas were anesthetized using alfaxalone intramuscularly and isoflurane via face mask, then maintained on isoflurane after endotracheal intubation. After 20 min of dark adaptation, electroretinograms were obtained using a handheld electroretinography (ERG) machine using a single flash protocol at three light intensities: 10 mcd s/m2, 3000 mcd s/m2, and 10 000 mcd s/m2.
Results
At 10 mcd s/m2, the mean b‐wave amplitude and implicit time were 49.5 μV (SD ± 33.1 and 95% CI 29.9–69.0) and 87.4 ms (SD ± 6.5 and 95% CI 83.6‐91.2). At 3000 mcd s/m2, the mean a‐wave amplitude and implicit time were 70.5 μV (SD ± 30.7 and 95% CI 52.3–88.7) and 20.6 ms (SD ± 3.1 and 95% CI 18.7–22.4), and the mean b‐wave amplitude and implicit time were 122.8 μV (SD ± 49.3 and 95% CI 93.7–151.9) and 63.1 ms (SD ± 13.2 and 95% CI 55.3–71.0). At 10 000 mcd sm2, the mean a‐wave amplitude and implicit time were 90.8 μV (SD ± 37.2 and 95% CI 68.8–112.8) and 16.1 ms (SD ± 3.1 and 95% CI 14.3–18.0), and the mean b‐wave amplitude and implicit time were 148.3 μV (SD ± 54.9 and 95% CI 115.9–180.8) and 67.4 ms (SD ± 8.4 and 95% CI 62.5–72.3).
Conclusion
Electroretinography in koalas is practical using a portable ERG system and a DTL thread electrode and allows for rapid assessment of retinal function.</abstract><cop>England</cop><pub>Blackwell Publishing Ltd</pub><pmid>24329986</pmid><doi>10.1111/vop.12133</doi><tpages>7</tpages></addata></record> |
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| subjects | Animals electroretinography Electroretinography - methods Electroretinography - veterinary eye Female koala Male marsupial Phascolarctidae - physiology retina Retina - physiology vision |
| title | Electroretinography in the normal koala (Phascolarctos cinereus) |
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