Skip to main content

Research Repository

Advanced Search

Quantitative planar and volumetric cardiac measurements using 64 mdct and 3t mri vs. Standard 2d and m-mode echocardiography: does anesthetic protocol matter?

Drees, R; Johnson, R A; Stepien, R L; Monoz Del Rio, A; Saunders, J H; Francois, C J

Authors

R Drees

R A Johnson

R L Stepien

A Monoz Del Rio

J H Saunders

C J Francois



Abstract

Cross‐sectional imaging of the heart utilizing computed tomography and magnetic resonance imaging (MRI) has been shown to be superior for the evaluation of cardiac morphology and systolic function in humans compared to echocardiography. The purpose of this prospective study was to test the effects of two different anesthetic protocols on cardiac measurements in 10 healthy beagle dogs using 64‐multidetector row computed tomographic angiography (64‐MDCTA), 3T magnetic resonance (MRI) and standard awake echocardiography. Both anesthetic protocols used propofol for induction and isoflourane for anesthetic maintenance. In addition, protocol A used midazolam/fentanyl and protocol B used dexmedetomedine as premedication and constant rate infusion during the procedure. Significant elevations in systolic and mean blood pressure were present when using protocol B. There was overall good agreement between the variables of cardiac size and systolic function generated from the MDCTA and MRI exams and no significant difference was found when comparing the variables acquired using either anesthetic protocol within each modality. Systolic function variables generated using 64‐MDCTA and 3T MRI were only able to predict the left ventricular end diastolic volume as measured during awake echocardiogram when using protocol B and 64‐MDCTA. For all other systolic function variables, prediction of awake echocardiographic results was not possible (P = 1). Planar variables acquired using MDCTA or MRI did not allow prediction of the corresponding measurements generated using echocardiography in the awake patients (P = 1). Future studies are needed to validate this approach in a more varied population and clinically affected dogs.

Citation

Drees, R., Johnson, R. A., Stepien, R. L., Monoz Del Rio, A., Saunders, J. H., & Francois, C. J. (2015). Quantitative planar and volumetric cardiac measurements using 64 mdct and 3t mri vs. Standard 2d and m-mode echocardiography: does anesthetic protocol matter?. https://doi.org/10.1111/vru.12269

Journal Article Type Article
Acceptance Date Apr 25, 2015
Publication Date Nov 10, 2015
Deposit Date Jun 20, 2015
Publicly Available Date Jun 20, 2015
Journal VETERINARY RADIOLOGY & ULTRASOUND
Peer Reviewed Peer Reviewed
Volume 56
Issue 6
Pages 638-657
DOI https://doi.org/10.1111/vru.12269
Public URL https://rvc-repository.worktribe.com/output/1399250

Files





You might also like



Downloadable Citations