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Effectiveness of pulse oximetry to detect hypoxaemia in immobilized impala (Aepyceros melampus)
Dissertation (MSc)--University of Pretoria, 2018.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2019
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| _version_ | 1867613489231560704 |
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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 | © 2019 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)--University of Pretoria, 2018. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/70437 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:36:57.501Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| 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:2263/70437 Effectiveness of pulse oximetry to detect hypoxaemia in immobilized impala (Aepyceros melampus) Meyer, Leith Carl Rodney u04892497@tuks.co.za Zeiler, Gareth Edward Mtetwa, Thembeka Kim UCTD Impala Hypoxaemia Opioids Tranquilizers Sedatives Veterinary science theses SDG-03 Veterinary science theses SDG-09 Veterinary science theses SDG-15 Dissertation (MSc)--University of Pretoria, 2018. Pulse oximetry is a cost-effective and a simple way to continuously monitor oxygenation of haemoglobin (SpO2) in humans and animals. Although pulse oximetry has been used extensively in wildlife, its efficacy and accuracy has not been validated. We aimed to establish, in immobilized impala, whether pulse oximetry is a reliable method to measure oxygenation of haemoglobin and aimed to determine which attachment site gives the most accurate measures. Sixteen healthy female impala were immobilized with etorphine or thiafentanil alone, or with a serotonin-agonist drug. Arterial blood samples were collected from the auricular artery at 5 minutes intervals during immobilization. At 40 minutes of immobilization, intranasal oxygen insufflation was provided to the impala at 5 L minute-1 flow rate to increase arterial oxygenation. A blood gas analyser was used to measure PaO2 (partial pressure of arterial oxygen) and calculate cSaO2 (calculated arterial haemoglobin oxygen saturation) and a co-oximeter was used to measure SaO2 (gold standard measure of arterial haemoglobin oxygen saturation) from arterial blood. Pulse oximeter probes were attached at four sites; namely under the tail, ear, rectum, and cheek. Pulse oximeter readings (SpO2 and pulse quality) were recorded at each site and compared with SaO2 and cSaO2 using Bland-Altman and accuracy root mean squares (Arms) methods to determine the efficacy. The pulse quality measured was generally good at each attachment site. Pulse oximetry measured under the tail was accurate and precise but only when SaO2 values were above 90% (bias = 3.03, precision = 3.15, Arms = 4.32). For the ear probe placement, overall bias and precision were high indicating that pulse oximetry was inaccurate (bias = -3.9) and imprecise (precision = 14.2). The cheek and rectal probe placement failed to give accurate or precise readings (cheek: bias = 11.63, precision = 10.86, Arms = 15.82 and rectum: bias = 4.9, precision = 12.02, Arms = 12.90). In order to get accurate and precise pulse oximetry readings in immobilized impala, probes must be placed under the tail and SaO2 must be above 90%. Since SaO2 values are usually low in immobilized impala, pulse oximeter readings should be interpreted with caution. es2026 Paraclinical Sciences MSc Unrestricted SDG-03: Good health and well-being SDG-09: Industry, innovation and infrastructure SDG-15: Life on land 2019-07-08T09:46:25Z 2019-07-08T09:46:25Z 2019/04/04 2018 Dissertation Mtetwa, TK 2018, Effectiveness of pulse oximetry to detect hypoxaemia in immobilized impala (Aepyceros melampus), MSc Dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/70437> A2019 http://hdl.handle.net/2263/70437 en © 2019 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 Impala Hypoxaemia Opioids Tranquilizers Sedatives Veterinary science theses SDG-03 Veterinary science theses SDG-09 Veterinary science theses SDG-15 Effectiveness of pulse oximetry to detect hypoxaemia in immobilized impala (Aepyceros melampus) |
| title | Effectiveness of pulse oximetry to detect hypoxaemia in immobilized impala (Aepyceros melampus) |
| title_full | Effectiveness of pulse oximetry to detect hypoxaemia in immobilized impala (Aepyceros melampus) |
| title_fullStr | Effectiveness of pulse oximetry to detect hypoxaemia in immobilized impala (Aepyceros melampus) |
| title_full_unstemmed | Effectiveness of pulse oximetry to detect hypoxaemia in immobilized impala (Aepyceros melampus) |
| title_short | Effectiveness of pulse oximetry to detect hypoxaemia in immobilized impala (Aepyceros melampus) |
| title_sort | effectiveness of pulse oximetry to detect hypoxaemia in immobilized impala aepyceros melampus |
| topic | UCTD Impala Hypoxaemia Opioids Tranquilizers Sedatives Veterinary science theses SDG-03 Veterinary science theses SDG-09 Veterinary science theses SDG-15 |
| url | http://hdl.handle.net/2263/70437 |