Comparison of pulsed wave and color Doppler myocardial velocity imaging in healthy dogs
Autor: | Katrin Hartmann, M. Killich, Gerhard Wess |
---|---|
Jazyk: | angličtina |
Rok vydání: | 2010 |
Předmět: |
Male
Systole 040301 veterinary sciences Myocardial velocity Diastole Hemodynamics 030204 cardiovascular system & hematology 0403 veterinary science 03 medical and health sciences Dogs 0302 clinical medicine Animals Medicine Pulsed wave Tissue velocity General Veterinary business.industry Ventricular wall 04 agricultural and veterinary sciences Color doppler Echocardiography Female business Nuclear medicine Blood Flow Velocity |
Zdroj: | Journal of Veterinary Internal Medicine; Vol 24 Journal of Veterinary Internal Medicine |
ISSN: | 0891-6640 |
DOI: | 10.1111/j.1939-1676.2009.0460.x |
Popis: | Background: Tissue velocity imaging (TVI) is increasingly used in small animal cardiology. Tissue velocity of the myocardial wall can be measured by pulsed wave (PW) or color Doppler (CD) imaging methods. Currently, the same reference ranges are used for PW TVI and CD TVI methods. However, if and how both methods correlate, and whether they can be used interchangeably, have not been assessed in small animals. Objectives: To compare the results of PW TVI and CD TVI measurements. Animals: Seventy-one healthy dogs. Methods: Longitudinal myocardial velocity profiles were recorded from the 4-chamber left apical view. Peak maximal systolic (S), early (E), and late diastolic (A) velocities were measured off-line in a blinded fashion in the septal and lateral left ventricular wall by PW TVI and CD TVI. Differences between peak PW TVI and CD TVI waves were analyzed by a paired t-test. Regression analysis and Bland-Altman difference plots also were used to assess agreement between methods. Results: There was a significant correlation between PW TVI and CD TVI (P < .001). However, S, E, and A waves measured by PW TVI were significantly higher than the CD TVI values (P < .001). Peak systolic and diastolic PW velocities were approximately 2.20 cm/s higher than corresponding mean CD TVI velocities. Conclusions and Clinical Importance: PW TVI measurements are significantly higher compared with CD TVI measurements. Theses differences are clinically relevant. These methods should not be used interchangeably, and different reference ranges for PW TVI and CD TVI should be used. |
Databáze: | OpenAIRE |
Externí odkaz: |