Radiographic reference limits for cardiac width in peregrine falcons (Falco peregrinus)
Objective—To determine radiographic reference limits for cardiac width (CW) in peregrine falcons. Design—Retrospective cross-sectional study. Animals—100 peregrine falcons. Procedures—CW, thoracic width (TW), and sternal width (SW) were measured at the level of maximum CW on ventrodorsal radiographs...
Main Authors: | , , |
---|---|
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2011
|
Subjects: | |
Online Access: | https://dspace.library.uu.nl/handle/1874/231722 |
id |
ftunivutrecht:oai:dspace.library.uu.nl:1874/231722 |
---|---|
record_format |
openpolar |
spelling |
ftunivutrecht:oai:dspace.library.uu.nl:1874/231722 2023-07-23T04:19:11+02:00 Radiographic reference limits for cardiac width in peregrine falcons (Falco peregrinus) Lumeij, J.T. Shaik, S. Ali, M. Advances in Veterinary Medicine Geneeskunde van gezelschapsdieren 2011-06-01 application/pdf https://dspace.library.uu.nl/handle/1874/231722 en eng 0003-1488 https://dspace.library.uu.nl/handle/1874/231722 info:eu-repo/semantics/ClosedAccess Article 2011 ftunivutrecht 2023-07-02T00:06:54Z Objective—To determine radiographic reference limits for cardiac width (CW) in peregrine falcons. Design—Retrospective cross-sectional study. Animals—100 peregrine falcons. Procedures—CW, thoracic width (TW), and sternal width (SW) were measured at the level of maximum CW on ventrodorsal radiographs of 64 falcons. Ratios of CW:TW and CW:SW were compared between positive pressure insufflation (PPI) radiographs and standard radiographs in 6 falcons. A hypothesis for the most accurate predictor of CW was formulated and validated in a new set of 36 falcons. Results—PPI radiographs had a significantly lower CW:TW ratio than did standard radiographs. The CW:SW ratio was unaffected. The 95% confidence interval for a regression-based predicted CW was 19% larger for any given TW, compared with SW. The difference between predicted and measured CW was significantly smaller with SW, compared with TW. Validation of these findings in a new data set of 36 falcons confirmed that prediction of CW when SW was used as the independent variable in a regression equation was superior to use of the CW:SW ratio or the CW:TW ratio and was superior to prediction of CW when TW was used as the independent variable in a regression equation. Conclusions and Clinical Relevance—Of the variables examined, SW seemed to be the most precise and most accurate predictor for CW in peregrine falcons. Thoracic width seemed inferior as a predictor for CW because TW was influenced by respiratory movements. The following formula can be used to predict the 95% confidence interval for CW in peregrine falcons: CW = 0.83SW + 0.37 ± 0.16. Article in Journal/Newspaper Falco peregrinus Utrecht University Repository |
institution |
Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
language |
English |
description |
Objective—To determine radiographic reference limits for cardiac width (CW) in peregrine falcons. Design—Retrospective cross-sectional study. Animals—100 peregrine falcons. Procedures—CW, thoracic width (TW), and sternal width (SW) were measured at the level of maximum CW on ventrodorsal radiographs of 64 falcons. Ratios of CW:TW and CW:SW were compared between positive pressure insufflation (PPI) radiographs and standard radiographs in 6 falcons. A hypothesis for the most accurate predictor of CW was formulated and validated in a new set of 36 falcons. Results—PPI radiographs had a significantly lower CW:TW ratio than did standard radiographs. The CW:SW ratio was unaffected. The 95% confidence interval for a regression-based predicted CW was 19% larger for any given TW, compared with SW. The difference between predicted and measured CW was significantly smaller with SW, compared with TW. Validation of these findings in a new data set of 36 falcons confirmed that prediction of CW when SW was used as the independent variable in a regression equation was superior to use of the CW:SW ratio or the CW:TW ratio and was superior to prediction of CW when TW was used as the independent variable in a regression equation. Conclusions and Clinical Relevance—Of the variables examined, SW seemed to be the most precise and most accurate predictor for CW in peregrine falcons. Thoracic width seemed inferior as a predictor for CW because TW was influenced by respiratory movements. The following formula can be used to predict the 95% confidence interval for CW in peregrine falcons: CW = 0.83SW + 0.37 ± 0.16. |
author2 |
Advances in Veterinary Medicine Geneeskunde van gezelschapsdieren |
format |
Article in Journal/Newspaper |
author |
Lumeij, J.T. Shaik, S. Ali, M. |
spellingShingle |
Lumeij, J.T. Shaik, S. Ali, M. Radiographic reference limits for cardiac width in peregrine falcons (Falco peregrinus) |
author_facet |
Lumeij, J.T. Shaik, S. Ali, M. |
author_sort |
Lumeij, J.T. |
title |
Radiographic reference limits for cardiac width in peregrine falcons (Falco peregrinus) |
title_short |
Radiographic reference limits for cardiac width in peregrine falcons (Falco peregrinus) |
title_full |
Radiographic reference limits for cardiac width in peregrine falcons (Falco peregrinus) |
title_fullStr |
Radiographic reference limits for cardiac width in peregrine falcons (Falco peregrinus) |
title_full_unstemmed |
Radiographic reference limits for cardiac width in peregrine falcons (Falco peregrinus) |
title_sort |
radiographic reference limits for cardiac width in peregrine falcons (falco peregrinus) |
publishDate |
2011 |
url |
https://dspace.library.uu.nl/handle/1874/231722 |
genre |
Falco peregrinus |
genre_facet |
Falco peregrinus |
op_relation |
0003-1488 https://dspace.library.uu.nl/handle/1874/231722 |
op_rights |
info:eu-repo/semantics/ClosedAccess |
_version_ |
1772182040753471488 |