Intracardiac Echocardiography Guided Transeptal Catheter Injection of Microspheres for Assessment of Cerebral Microcirculation in Experimental Models
Joint Authors
Boots, Robert James
Bellapart, Judith
Fraser, John F.
Maybauer, Marc O.
Platts, David G.
Diab, Sara
Gabrielian, Levon
Raffel, Christopher
Dunster, Kimble R.
Barnett, Adrian
Source
Cardiology Research and Practice
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-09-11
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
The use of microspheres for the determination of regional microvascular blood flow (RMBF) has previously used different approaches.
This study presents for the first time the intracardiac injection of microspheres using transeptal puncture under intracardiac echocardiography guidance.
Five Merino sheep were instrumented and cardiovascularly supported according to local guidelines.
Two catheter sheaths into the internal jugular vein facilitated the introduction of an intracardiac probe and transeptal catheter, respectively.
Five million colour coded microspheres were injected into the left atrium via this catheter.
After euthanasia the brain was used as proof of principle and the endpoint for determination of microcirculation at different time points.
Homogeneous allocation of microspheres to different regions of the brain was found over time.
Alternate slices from both hemispheres showed the following flow ranges: for slice 02; 0.57–1.02 mL/min/g, slice 04; 0.45–1.42 mL/min/g, slice 06; 0.35–1.87 mL/min/g, slice 08; 0.46–1.77 mL/min/g, slice 10; 0.34–1.28 mL/min/g.
A mixed effect regression model demonstrated that the confidence interval did include zero suggesting that the apparent variability intra- and intersubject was not statistically significant, supporting the stability and reproducibility of the injection technique.
This study demonstrates the feasibility of the transeptal injection of microspheres, showing a homogeneous distribution of blood flow through the brain unchanged over time and has established a new interventional model for the measurement of RMBF in ovine models.
American Psychological Association (APA)
Bellapart, Judith& Dunster, Kimble R.& Diab, Sara& Platts, David G.& Raffel, Christopher& Gabrielian, Levon…[et al.]. 2013. Intracardiac Echocardiography Guided Transeptal Catheter Injection of Microspheres for Assessment of Cerebral Microcirculation in Experimental Models. Cardiology Research and Practice،Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-483747
Modern Language Association (MLA)
Bellapart, Judith…[et al.]. Intracardiac Echocardiography Guided Transeptal Catheter Injection of Microspheres for Assessment of Cerebral Microcirculation in Experimental Models. Cardiology Research and Practice No. 2013 (2013), pp.1-8.
https://search.emarefa.net/detail/BIM-483747
American Medical Association (AMA)
Bellapart, Judith& Dunster, Kimble R.& Diab, Sara& Platts, David G.& Raffel, Christopher& Gabrielian, Levon…[et al.]. Intracardiac Echocardiography Guided Transeptal Catheter Injection of Microspheres for Assessment of Cerebral Microcirculation in Experimental Models. Cardiology Research and Practice. 2013. Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-483747
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-483747