Atrial septal defect transcranial doppler ultrasound: Difference between revisions
Jump to navigation
Jump to search
/* ACC / AHA 2008 Guidelines - Evaluation of the Unoperated Patient - Atrial Septal Defect(DO NOT EDIT){{cite journal| author=Warnes CA, Williams RG, Bashore TM, Child JS, Connolly HM, Dearani JA et al.| title=ACC/AHA 2008 guidelines for the manag... |
|||
| Line 34: | Line 34: | ||
:* Larger left-to-right shunt, associated primarily with atrial septal defect. | :* Larger left-to-right shunt, associated primarily with atrial septal defect. | ||
* Visualization of bubbles in the [[left atrium]] and [[left ventricle]]. | * Visualization of bubbles in the [[left atrium]] and [[left ventricle]]. | ||
===Supportive Trial Data=== | ===Supportive Trial Data=== | ||
Revision as of 16:48, 9 January 2013
|
Atrial Septal Defect Microchapters | |
|
Treatment | |
|---|---|
|
Surgery | |
|
| |
|
Special Scenarios | |
|
Case Studies | |
|
Atrial septal defect transcranial doppler ultrasound On the Web | |
|
American Roentgen Ray Society Images of Atrial septal defect transcranial doppler ultrasound | |
|
Atrial septal defect transcranial doppler ultrasound in the news | |
|
Blogs on Atrial septal defect transcranial doppler ultrasound | |
|
Risk calculators and risk factors for Atrial septal defect transcranial doppler ultrasound | |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-In-Chief: Priyamvada Singh, M.B.B.S. [2]; Cafer Zorkun, M.D., Ph.D. [3]; Assistant Editor(s)-In-Chief: Kristin Feeney, B.S. [4]
Overview
Trans-cranial doppler ultrasound is a diagnostic tool that involves a simple intravenous injection of saline under minimal sedation. It is primarily utilized to further diagnostically evaluate a patent foramen ovale defect.
Transcranial Doppler Ultrasound
- Transcranial Doppler Ultrasound Bubble test can be used to determine hemodynamic interaction between atria of the heart.
- Non-invasive ultrasound method.
- Operated by a hand-held Doppler transducer that functions on a pulsating low-frequency.
- Requires no sedation.
- Involves a simple intravenous injection of saline solution.
- Used as a testing standard in clinical trials of patent foramen ovale closure devices and in studies ivestigating the relationship and interconnectivity of patent foramen ovale, stroke and migraines.
Indications
- Effective in detecting narrowing of cerebral arteries.
- Effective in measuring hemodynamic circulation patterns within occluded diseased cerebral arteries.
- Effectively measures:
- Peak systolic velocity
- Peak diastolic velocity
- Mean velocity
- Pulsitility
Advantages
- Usage of valsalva maneuver during testing can increase the visibility and overall detection of an atrial septal defect
- Less invasive than other methods.
- Cost effective.
- Can be completed in under an hour.
Common Findings
- A defect may present in two ways:
- Small right-to-left shunt at start of systole (biphasic), associated with patent foramen ovale.
- Larger left-to-right shunt, associated primarily with atrial septal defect.
- Visualization of bubbles in the left atrium and left ventricle.
Supportive Trial Data
- Transcranial Doppler ultrasound Bubble study has minimal or no complications.[1]
- One study which detected an incidence of adverse events of 0.3% or greater and found 0 events; indicating a high confidence interval (alpha value was 0.05).[1]
References
- ↑ 1.0 1.1 Tsivgoulis G, Stamboulis E, Sharma VK, Heliopoulos I, Voumvourakis K, Teoh HL; et al. (2010). "Safety of transcranial Doppler 'bubble study' for identification of right to left shunts: an international multicentre study". J Neurol Neurosurg Psychiatry. doi:10.1136/jnnp.2010.219733. PMID 20971751.