Blood perfusion in Hewes tarsoconjunctival flaps in pigs measured by laser speckle contrast imaging
Ansson, Cu LU ; Sheikh, Rafi LU
; Dahlstrand, Ulf
LU
; Hult, Jenny
LU
; Lindstedt Ingemansson, Sandra
LU
and Malmsjö, Malin
LU
(2018)
In JPRAS Open
18.
p.98-103
- Abstract
- Background
Hewes flap is a tarsoconjunctival eyelid flap, based at the lateral canthal tendon, and rotated and stretched to repair lateral defects in the lower eyelid commonly following tumor surgery. The aim of the present study was to monitor perfusion in a Hewes flap during reconstruction, which to the best of our knowledge, has not previously been done.
Methods
A Hewes tarsoconjunctival eyelid flap was raised and the effects on blood perfusion of rotating the flaps by 90° and 180°, stretching the flaps with a force of 5 or 10 N, and repeated diathermic coagulation was monitored with laser speckle contrast imaging.
Results
Rotating the flaps by 90° did not significantly affect perfusion, while further... (More) - Background
Hewes flap is a tarsoconjunctival eyelid flap, based at the lateral canthal tendon, and rotated and stretched to repair lateral defects in the lower eyelid commonly following tumor surgery. The aim of the present study was to monitor perfusion in a Hewes flap during reconstruction, which to the best of our knowledge, has not previously been done.
Methods
A Hewes tarsoconjunctival eyelid flap was raised and the effects on blood perfusion of rotating the flaps by 90° and 180°, stretching the flaps with a force of 5 or 10 N, and repeated diathermic coagulation was monitored with laser speckle contrast imaging.
Results
Rotating the flaps by 90° did not significantly affect perfusion, while further rotation to 180° reduced blood perfusion to 75% of the baseline value. When the tarsoconjunctival flaps were both rotated 90° and stretched with 5 N, the perfusion was reduced even further, to 63%. A further reduction in perfusion, to 36%, was seen when the higher force of 10 N was applied. Diathermy decreased blood perfusion to 56% after being applied once. Successive applications led to further decreases: 43%, 31%, and 15%, after the second, third and fourth applications.
Conclusions
Perfusion in Hewes tarsoconjunctival flaps is affected by both rotation and stretching, but some perfusion is maintained despite these manipulations. Diathermy, however, has detrimental effects and should be avoided. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/a7fcba18-0827-4e30-a0c7-abb2eb65e7a7
- author
- Ansson, Cu
LU
; Sheikh, Rafi
LU
; Dahlstrand, Ulf
LU
; Hult, Jenny
LU
; Lindstedt Ingemansson, Sandra
LU
and Malmsjö, Malin
LU
- organization
- publishing date
- 2018-12
- type
- Contribution to journal
- publication status
- published
- subject
- in
- JPRAS Open
- volume
- 18
- pages
- 98 - 103
- publisher
- Elsevier
- external identifiers
-
- scopus:85052651845
- ISSN
- 2352-5878
- DOI
- 10.1016/j.jpra.2018.07.001
- language
- English
- LU publication?
- yes
- id
- a7fcba18-0827-4e30-a0c7-abb2eb65e7a7
- date added to LUP
- 2018-08-27 16:05:05
- date last changed
- 2022-10-15 22:48:41
@article{a7fcba18-0827-4e30-a0c7-abb2eb65e7a7,
abstract = {{Background<br/><br/>Hewes flap is a tarsoconjunctival eyelid flap, based at the lateral canthal tendon, and rotated and stretched to repair lateral defects in the lower eyelid commonly following tumor surgery. The aim of the present study was to monitor perfusion in a Hewes flap during reconstruction, which to the best of our knowledge, has not previously been done.<br/>Methods<br/><br/>A Hewes tarsoconjunctival eyelid flap was raised and the effects on blood perfusion of rotating the flaps by 90° and 180°, stretching the flaps with a force of 5 or 10 N, and repeated diathermic coagulation was monitored with laser speckle contrast imaging.<br/>Results<br/><br/>Rotating the flaps by 90° did not significantly affect perfusion, while further rotation to 180° reduced blood perfusion to 75% of the baseline value. When the tarsoconjunctival flaps were both rotated 90° and stretched with 5 N, the perfusion was reduced even further, to 63%. A further reduction in perfusion, to 36%, was seen when the higher force of 10 N was applied. Diathermy decreased blood perfusion to 56% after being applied once. Successive applications led to further decreases: 43%, 31%, and 15%, after the second, third and fourth applications.<br/>Conclusions<br/><br/>Perfusion in Hewes tarsoconjunctival flaps is affected by both rotation and stretching, but some perfusion is maintained despite these manipulations. Diathermy, however, has detrimental effects and should be avoided.}},
author = {{Ansson, Cu and Sheikh, Rafi and Dahlstrand, Ulf and Hult, Jenny and Lindstedt Ingemansson, Sandra and Malmsjö, Malin}},
issn = {{2352-5878}},
language = {{eng}},
pages = {{98--103}},
publisher = {{Elsevier}},
series = {{JPRAS Open}},
title = {{Blood perfusion in Hewes tarsoconjunctival flaps in pigs measured by laser speckle contrast imaging}},
url = {{http://dx.doi.org/10.1016/j.jpra.2018.07.001}},
doi = {{10.1016/j.jpra.2018.07.001}},
volume = {{18}},
year = {{2018}},
}