Klinik für Kleintiere, Justus-Liebig University Giessen, Frankfurterstr. 126, D-35392 Giessen, Germany; e-mail: email@example.com.
Transthoracic Echocardiographic Measurement of Patent Ductus Arteriosus in Dogs
Article first published online: 5 FEB 2008
© 2007 American College of Veterinary Internal Medicine
Journal of Veterinary Internal Medicine
Volume 21, Issue 2, pages 251–257, March 2007
Total views since August 2010: 10
How to Cite
Schneider, M., Hildebrandt, N., Schweigl, T. and Wehner, M. (2007), Transthoracic Echocardiographic Measurement of Patent Ductus Arteriosus in Dogs. Journal of Veterinary Internal Medicine, 21: 251–257. doi: 10.1111/j.1939-1676.2007.tb02957.x
- Issue published online: 5 FEB 2008
- Article first published online: 5 FEB 2008
- Submitted May 6, 2006; Revised July 30, 2006; Accepted October 2, 2006.
- Interventional therapy;
- 2-dimensional echocardiography;
Background:Patent ductus arteriosus (PDA) size and morphology influence the selection of the kind and the size of the embolization device used to effect shunt closure.
Hypothesis:That echocardiographic measurement of PDA in dogs is accurate.
Animals:Forty-five client-owned dogs with PDA.
Methods:Prospective observational study. Echocardiographic and angiographic data were compared.
Results:Measurement of the ductus in color Doppler echocardiography (CD-E) and 2-dimensional echocardiography (2D-E) was achieved from left parasternal views in 43 of 45 unsedated dogs (96%). In these 43 dogs, the angiographic minimal PDA diameter was 3.72 ± 1.59 mm, and the diameter of the PDA ampulla was 8.46 ± 3.01 mm. The CD-E minimal PDA diameter ranged from 2.3 to 9.5 mm (median, 4.0 mm). There was a significant mean difference to the angiographic measurements (1.15 ± 0.95 mm; P < .0001). An agreement in a 1-mm range was found in 21 of 43 dogs (48%). The 2D-E minimal PDA diameter was 3.73 ± 1.78 mm, and the mean difference to the angiographic measurements was not significant (0.00 ± 0.72 mm; P= .98). An agreement in a 1-mm range was found in 31 of 43 dogs (72%). The 2D-E measurement of the PDA ampulla revealed a significant mean difference to the angiographic data (1.95 ± 2.43 mm, P < .0001). An agreement in a 2-mm range was found in 21 of 43 dogs (49%).
Conclusions and Clinical Importance: The 2D-E from the left cranial parasternal view is an excellent noninvasive method to estimate the PDA minimal diameter before doing catheter intervention.