Abdominal aortic aneurysm echocardiography and ultrasound

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]; Hardik Patel, M.D. Ramyar Ghandriz MD[3]

Overview

Abdominal ultrasound is the standard imaging modality used to detect and follow the progression of an abdominal aortic aneurysm (AAA). When performed by an expert, it has a sensitivity and specificity close to 100% and 96%, respectively, in the detection of an AAA. Abdominal ultrasound can also detect mural thrombus, iliac artery aneurysms, and free peritoneal blood.

Echocardiography/Ultrasound

Ultrasound

  • Abdominal ultrasound is the standard imaging modality to detect and follow the progression of an abdominal aortic aneurysm. [1]
  • When performed by an expert, it has a sensitivity and specificity close to 100% and 96%, respectively, in the detection of an AAA. [2]
  • Abdominal ultrasound can also detect mural thrombus, iliac artery aneurysms, and free peritoneal blood. Abdominal ultrasound is noninvasive, fast, inexpensive, safe, well-tolerated by most patients, and can be immediately performed at the bedside if an AAA is suspected.[3]
  • There are no serious side effects associated with screening for an AAA using ultrasonography.
  • Screening can be used to determine the size of the aneurysm and to observe the aneurysm over time. The ability to screen the abdominal aorta, however, is reduced by the presence of bowel gas or obesity.[4]


Shown below is an ultrasound image of a normal abdominal aorta measuring 1.9 cm in diameter:

Copyleft image obtained courtesy of http://en.wikipedia.org/wiki/File:US_normal_abdominal_aorta.JPG; James Heilman, MD.

References

  1. Wanhainen, Anders; Mani, Kevin; Golledge, Jonathan (2016). "Surrogate Markers of Abdominal Aortic Aneurysm Progression". Arteriosclerosis, Thrombosis, and Vascular Biology. 36 (2): 236–244. doi:10.1161/ATVBAHA.115.306538. ISSN 1079-5642.
  2. Hong H, Yang Y, Liu B, Cai W (2010). "Imaging of Abdominal Aortic Aneurysm: the present and the future". Curr Vasc Pharmacol. 8 (6): 808–19. doi:10.2174/157016110793563898. PMC 2891873. PMID 20180767.
  3. Medical Advisory Secretariat (2006). "Ultrasound screening for abdominal aortic aneurysm: an evidence-based analysis". Ont Health Technol Assess Ser. 6 (2): 1–67. PMC 3379169. PMID 23074490.
  4. Mohler, ER.; Gornik, HL.; Gerhard-Herman, M.; Misra, S.; Olin, JW.; Zierler, E.; Wolk, MJ.; Mohler, ER.; Dixon, BS. (2012). "ACCF/ACR/AIUM/ASE/ASN/ICAVL/SCAI/SCCT/SIR/SVM/SVS 2012 appropriate use criteria for peripheral vascular ultrasound and physiological testing part I: arterial ultrasound and physiological testing: a report of the American College of Cardiology Foundation Appropriate Use Criteria Task Force, American College of Radiology, American Institute of Ultrasound in Medicine, American Society of Echocardiography, American Society of Nephrology, Intersocietal Commission for the Accreditation of Vascular Laboratories, Society for Cardiovascular Angiography and Interventions, Society of Cardiovascular Computed Tomography, Society for Interventional Radiology, Society for Vascular Medicine, and Society for Vascular Surgery". J Vasc Surg. 56 (1): e17–51. doi:10.1016/j.jvs.2012.05.054. PMID 22694919. Unknown parameter |month= ignored (help)



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