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The Effect of Canthotomy on Blood Perfusion During the Repair of Lower Eyelid Defects

Berggren, Johanna V LU ; Tenland, Kajsa LU ; Memarzadeh, Khashayar LU ; Sheikh, Rafi LU orcid ; Hult, Jenny LU orcid ; Lindstedt, Sandra LU and Malmsjö, Malin LU (2020) In Ophthalmic Plastic and Reconstructive Surgery 36(2). p.135-138
Abstract

PURPOSE: Canthotomy is frequently used to mobilize extra tissue when repairing larger lower eyelid defects. The aim of this study was to explore the effect of canthotomy on blood perfusion and oxygen tension.

METHODS: Eight pigs underwent a wedge resection of the lower eyelid and canthotomy (with cantholysis involving the lateral palpebral artery). The wedge resection was performed 8, 6, and 4 mm from the canthotomy. Perfusion and oxygen tension were monitored in the eyelid between the wedge resection and canthotomy using laser Doppler velocimetry and a Clark electrode. Verapamil was administered, and measurements were also performed 12 hours after surgery, to investigate the possible effects of vasospasm RESULTS:: The wedge... (More)

PURPOSE: Canthotomy is frequently used to mobilize extra tissue when repairing larger lower eyelid defects. The aim of this study was to explore the effect of canthotomy on blood perfusion and oxygen tension.

METHODS: Eight pigs underwent a wedge resection of the lower eyelid and canthotomy (with cantholysis involving the lateral palpebral artery). The wedge resection was performed 8, 6, and 4 mm from the canthotomy. Perfusion and oxygen tension were monitored in the eyelid between the wedge resection and canthotomy using laser Doppler velocimetry and a Clark electrode. Verapamil was administered, and measurements were also performed 12 hours after surgery, to investigate the possible effects of vasospasm RESULTS:: The wedge resection alone did not affect perfusion. Canthotomy led to a reduction in perfusion; being 60% when the length of remaining eyelid was 8 mm, 32% when it was 6 mm, and 24% when it was 4 mm. Similar results were observed for oxygen tension. Vasospasm did not affect the results.

CONCLUSIONS: Canthotomy in combination with a wedge resection of the lower eyelid affects blood perfusion. A smaller length of remaining eyelid tissue will have less perfusion. This may not have any implications in cases of direct closure, but may play a role when the eyelid is to provide oxygen and nutrients to avascular grafts.

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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Ophthalmic Plastic and Reconstructive Surgery
volume
36
issue
2
pages
4 pages
publisher
Lippincott Williams & Wilkins
external identifiers
  • pmid:31743283
  • scopus:85081945823
ISSN
1537-2677
DOI
10.1097/IOP.0000000000001489
language
English
LU publication?
yes
id
e27c3e3a-4b33-4bc2-847c-a35c7aba0ea7
date added to LUP
2019-11-24 14:40:40
date last changed
2024-04-16 23:26:37
@article{e27c3e3a-4b33-4bc2-847c-a35c7aba0ea7,
  abstract     = {{<p>PURPOSE: Canthotomy is frequently used to mobilize extra tissue when repairing larger lower eyelid defects. The aim of this study was to explore the effect of canthotomy on blood perfusion and oxygen tension.</p><p>METHODS: Eight pigs underwent a wedge resection of the lower eyelid and canthotomy (with cantholysis involving the lateral palpebral artery). The wedge resection was performed 8, 6, and 4 mm from the canthotomy. Perfusion and oxygen tension were monitored in the eyelid between the wedge resection and canthotomy using laser Doppler velocimetry and a Clark electrode. Verapamil was administered, and measurements were also performed 12 hours after surgery, to investigate the possible effects of vasospasm RESULTS:: The wedge resection alone did not affect perfusion. Canthotomy led to a reduction in perfusion; being 60% when the length of remaining eyelid was 8 mm, 32% when it was 6 mm, and 24% when it was 4 mm. Similar results were observed for oxygen tension. Vasospasm did not affect the results.</p><p>CONCLUSIONS: Canthotomy in combination with a wedge resection of the lower eyelid affects blood perfusion. A smaller length of remaining eyelid tissue will have less perfusion. This may not have any implications in cases of direct closure, but may play a role when the eyelid is to provide oxygen and nutrients to avascular grafts.</p>}},
  author       = {{Berggren, Johanna V and Tenland, Kajsa and Memarzadeh, Khashayar and Sheikh, Rafi and Hult, Jenny and Lindstedt, Sandra and Malmsjö, Malin}},
  issn         = {{1537-2677}},
  language     = {{eng}},
  number       = {{2}},
  pages        = {{135--138}},
  publisher    = {{Lippincott Williams & Wilkins}},
  series       = {{Ophthalmic Plastic and Reconstructive Surgery}},
  title        = {{The Effect of Canthotomy on Blood Perfusion During the Repair of Lower Eyelid Defects}},
  url          = {{http://dx.doi.org/10.1097/IOP.0000000000001489}},
  doi          = {{10.1097/IOP.0000000000001489}},
  volume       = {{36}},
  year         = {{2020}},
}