Atrial septal defect echocardiography modalities: Difference between revisions
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{{Atrial septal defect}} | {{Atrial septal defect}} | ||
{{CMG}}; | {{CMG}}; '''Associate Editors-In-Chief:''' [[Priyamvada Singh|Priyamvada Singh, M.B.B.S.]] [mailto:psingh@perfuse.org], {{CZ}}; '''Assistant Editor-In-Chief:''' [[Kristin Feeney|Kristin Feeney, B.S.]] [mailto:kfeeney@perfuse.org] | ||
'''Associate Editors-In-Chief:''' | |||
'''Assistant Editor-In-Chief:''' [[Kristin Feeney|Kristin Feeney, B.S.]] | |||
==Overview== | ==Overview== | ||
Echocardiography is the preferred diagnostic tool in the evaluation of an atrial septal defect. | Echocardiography is the preferred diagnostic tool in the evaluation of an atrial septal defect. A range of techniques may be employed to definitively image and diagnose the nature of an atrial septal defect. These include: a sub-costal four chamber view, doppler echocardiography, contrast echocardiogrpahy, and transesophageal echocardiography. | ||
== | ==Techniques for ASD== | ||
Researchers have a range of techniques for atrial septal defect identification through echocardiography. The purpose of each technique is to utilize dimensional imaging to identify various attributes of the atrial septal defect in terms of spacial and planar characteristics. Often, Doppler measurements are used to estimate the right pulmonary pressures as well as the direction of flow across the defect. Other special techniques include the following. | |||
===The Subcostal Four-Chamber View=== | ===The Subcostal Four-Chamber View=== | ||
Revision as of 19:40, 19 August 2011
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editors-In-Chief: Priyamvada Singh, M.B.B.S. [2], Cafer Zorkun, M.D., Ph.D. [3]; Assistant Editor-In-Chief: Kristin Feeney, B.S. [4]
Overview
Echocardiography is the preferred diagnostic tool in the evaluation of an atrial septal defect. A range of techniques may be employed to definitively image and diagnose the nature of an atrial septal defect. These include: a sub-costal four chamber view, doppler echocardiography, contrast echocardiogrpahy, and transesophageal echocardiography.
Techniques for ASD
Researchers have a range of techniques for atrial septal defect identification through echocardiography. The purpose of each technique is to utilize dimensional imaging to identify various attributes of the atrial septal defect in terms of spacial and planar characteristics. Often, Doppler measurements are used to estimate the right pulmonary pressures as well as the direction of flow across the defect. Other special techniques include the following.
The Subcostal Four-Chamber View
- Key to determine which type of defect exists.
- Necessary to evaluate for anomoulous pulmonary veins.
- Evaluates for an atrial septal aneurysm.
Doppler
- Used to demonstrate left to right flow.
- May show false positive shunting as caval flow and incorrectly set gain may appear as left to right flow.
Contrast echocardiography
- Often necessary employed to determine presence of intracardiac shunting done in the apical four chamber view. Drawbacks include difficulty in quantifying the size of the shunt as well as false positives in the setting of a pulmonary arteriovenous malformation.
- Agitated saline is commonly used as the contrast material.
3-D/Transesophageal echocardiography (TEE)
- Used for extensive dimensional imaging
- Utilized to adequately visualize the defect in a multi-planar orientation.