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Determining whether blood colour can be used to assess arterial blood oxygenation in immobilised impala (Aepyceros melampus)
Dissertation (MSc (Veterinary Science))--University of Pretoria, 2019.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2024
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| _version_ | 1867613484238241792 |
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| access_status_str | Open Access |
| author2 | Meyer, Leith Carl Rodney |
| author_browse | Meyer, Leith Carl Rodney |
| author_facet | Meyer, Leith Carl Rodney |
| collection | Thesis |
| dc_rights_str_mv | © 2021 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc (Veterinary Science))--University of Pretoria, 2019. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/97538 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:36:52.833Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/97538 Determining whether blood colour can be used to assess arterial blood oxygenation in immobilised impala (Aepyceros melampus) Meyer, Leith Carl Rodney drpebasson@gmail.com Zeiler, Gareth Edward Basson, Pierre Etienne UCTD CIE L*a*b* Oxyhaemoglobin saturation Immobilisation Blood colour Impala Veterinary science theses SDG-03 Veterinary science theses SDG-09 Veterinary science theses SDG-15 Dissertation (MSc (Veterinary Science))--University of Pretoria, 2019. Hypoxaemia (oxyhaemoglobin saturation < 90%) often occurs during wildlife immobilisation and poses a risk of morbidity and mortality. Several methods have been used to assess blood oxygenation in immobilised impala (Aepyceros melampus). Pulse oximetry has been shown to be unreliable, co-oximetry and blood gas analysis are the gold standard but are limited by practicality and cost. With the advent of digital cameras and spectrocolourimeters the assessment of blood colour could be of value for determining blood oxygenation. This study set out to determine whether there is good association between arterial blood colour, as assessed by CIE L*a*b* (Commission on international illumination; L*: luminosity; a*: green to red; b*: blue to yellow) colour components, and blood oxygenation, as determined by functional oxyhaemoglobin saturation (SaO2) and fractional oxyhaemoglobin saturation (FO2Hb). To obtain arterial blood samples with different blood oxygen levels 11 impala were immobilised with either etorphine or thiafentanil. Arterial blood samples were collected from the auricular artery at five-minute intervals and immediately analysed by means of co-oximetry to measure blood oxygenation, and spectrocolourimetry to measure the CIE L*a*b* colour components. The colour components associated better with blood oxygenation (SaO2 and FO2Hb) using a quadratic rather than a linear model (p < 0.001). The association was strong for each of the colour components (CIE L*a*b*). Therefore both SaO₂ and FO2Hb are reliable predictors of all three CIE L*a*b* components of arterial blood colour, and hence blood colour can be used to reliably estimate arterial blood oxygenation of impala. These findings could pave the way for developing colour charts and devices that can be used in the field to inexpensively determine blood oxygenation, and detect hypoxaemia, in immobilised or anaesthetised animals. es2026 Paraclinical Sciences MSc (Veterinary Science) Unrestricted Faculty of Veterinary Science SDG-03: Good health and well-being SDG-09: Industry, innovation and infrastructure SDG-15: Life on land 2024-08-08T11:12:35Z 2024-08-08T11:12:35Z 2020-04 2019 Dissertation * A2024 http://hdl.handle.net/2263/97538 en © 2021 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD CIE L*a*b* Oxyhaemoglobin saturation Immobilisation Blood colour Impala Veterinary science theses SDG-03 Veterinary science theses SDG-09 Veterinary science theses SDG-15 Determining whether blood colour can be used to assess arterial blood oxygenation in immobilised impala (Aepyceros melampus) |
| title | Determining whether blood colour can be used to assess arterial blood oxygenation in immobilised impala (Aepyceros melampus) |
| title_full | Determining whether blood colour can be used to assess arterial blood oxygenation in immobilised impala (Aepyceros melampus) |
| title_fullStr | Determining whether blood colour can be used to assess arterial blood oxygenation in immobilised impala (Aepyceros melampus) |
| title_full_unstemmed | Determining whether blood colour can be used to assess arterial blood oxygenation in immobilised impala (Aepyceros melampus) |
| title_short | Determining whether blood colour can be used to assess arterial blood oxygenation in immobilised impala (Aepyceros melampus) |
| title_sort | determining whether blood colour can be used to assess arterial blood oxygenation in immobilised impala aepyceros melampus |
| topic | UCTD CIE L*a*b* Oxyhaemoglobin saturation Immobilisation Blood colour Impala Veterinary science theses SDG-03 Veterinary science theses SDG-09 Veterinary science theses SDG-15 |
| url | http://hdl.handle.net/2263/97538 |