Comparative study of 4 echocardiographic methods of left ventricular measurement in German Shepherd dogs |
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| Institution: | 1. Traunkreis Vet Clinic, Tierklinik Sattledt, Kirchdorferstraße 7, 4642 Sattledt, Austria;2. Swedish University of Agricultural Sciences, Department of Clinical Sciences, P.O. Box 7070, 75007 Uppsala, Sweden;1. Department of Veterinary Clinical and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Dyrlægevej 16, DK-1870 Frederiksberg, Denmark;2. Xlab, Center for Healthy Aging, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, DK-2200 Copenhagen, Denmark;1. Division of Clinical Veterinary Sciences, The Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, UK;2. Department of Veterinary Medicine, Veterinary Teaching Hospital, University of Milan, Lodi, Italy;1. University of Wisconsin, School of Veterinary Medicine, Department of Medical Sciences (Cardiology), 2015 Linden Drive, Madison, WI 53706, USA;2. University of Wisconsin, School of Medicine and Public Health, Department of Pediatrics and the John Rankin Laboratory of Pulmonary Medicine, 600 Highland Avenue, Madison, WI 53792, USA;3. University of Iowa, Department of Health and Human Physiology, 225 S. Grand Avenue, Iowa City, IA 52242, USA;4. University of Wisconsin, School of Medicine and Public Health, Department of Radiology, 600 Highland Avenue, Madison, WI 53792, USA;5. University of Wisconsin, College of Engineering, Department of Biomedical Engineering, 1550 Engineering Dr., Madison, WI 53706, USA;1. Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, 3900 Delancey St, Philadelphia PA, 19104, USA;2. Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, 3400 Civic Center Blvd, Philadelphia PA, 19104, USA |
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| Abstract: | ObjectivesTo compare dimensions and shortening fraction (SF) of the left ventricle (LV) obtained from two-dimensional (2D) and M-mode imaging of short and long-axis views.Animals40 healthy, adult German Shepherd dogs.MethodsLeft ventricular measurements were obtained using 4 echocardiographic methods: M-mode in short and long-axis and 2D imaging in short and long-axis. The methods were compared by studying the effects of imaging mode and axis on LV parameters, taking into account the influence of weight and gender.ResultsMean LV end-diastolic diameter was greater in short-axis views. However, this difference was not considered clinically relevant. Mean SF was higher when derived from 2D measurements with poor agreement among methods. A combined influence of axis, gender, and weight was observed on interventricular septal thickness in end diastole with poor agreement among methods.ConclusionsSome LV parameters were significantly affected by mode and axis, either in isolation or in combination with weight and gender, although the differences observed were not always clinically relevant. These findings show that using the different echocardiographic methods interchangeably to assess LV dimensions should be done with caution. |
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| Keywords: | Canine Cardiac ultrasound Imaging |
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