ATC Abstracts

American Transplant Congress abstracts

  • Home
  • Meetings Archive
    • 2022 American Transplant Congress
    • 2021 American Transplant Congress
    • 2020 American Transplant Congress
    • 2019 American Transplant Congress
    • 2018 American Transplant Congress
    • 2017 American Transplant Congress
    • 2016 American Transplant Congress
    • 2015 American Transplant Congress
    • 2013 American Transplant Congress
  • Keyword Index
  • Resources
    • 2021 Resources
    • 2016 Resources
      • 2016 Welcome Letter
      • ATC 2016 Program Planning Committees
      • ASTS Council 2015-2016
      • AST Board of Directors 2015-2016
    • 2015 Resources
      • 2015 Welcome Letter
      • ATC 2015 Program Planning Committees
      • ASTS Council 2014-2015
      • AST Board of Directors 2014-2015
      • 2015 Conference Schedule
  • Search

Accuracy Of Agitated Saline Contrast Echocardiography For Assessment Of Intracardiac Shunting In Preoperative Liver Transplant Patients

B. B. Swanson1, R. Salgia2, J. El-Bashir3, S. Parikh1

1Cardiovascular Medicine, Henry Ford Hospital, Detroit, MI, 2Hepatology, Henry Ford Hospital, Detroit, MI, 3Anesthesiology, Henry Ford Hospital, Detroit, MI

Meeting: 2020 American Transplant Congress

Abstract number: A-166

Keywords: Echocardiography, Heart

Session Information

Session Name: Poster Session A: Liver: Recipient Selection

Session Type: Poster Session

Date: Saturday, May 30, 2020

Session Time: 3:15pm-4:00pm

 Presentation Time: 3:30pm-4:00pm

Location: Virtual

*Purpose: Liver Transplant (LT) is a high-risk surgery that requires careful pre-op screening for cardiovascular disease. Patent Foramen Ovale (PFO) is a common cardiac condition that is found in up to 20% of adults and is commonly evaluated as part of LT screening. Transthoracic Echocardiography (TTE) with agitated saline contrast imaging (ASCi) has become the screening test of choice for PFO with reported sensitivity of 99% and specificity of 85%. Exclusion of significant atrial level shunt is important prior to LT, however patients with end stage liver disease (ESLD) can be difficult to evaluate with ASCi given a high prevalence of intra-pulmonary shunting. We sought to evaluate if ASCi can accurately predict presence of atrial level shunting in patients with ESLD prior to transplant.

*Methods: We performed a retrospective chart review of patients in our health system who underwent LT between January 2016 and October of 2019. We screened for TTE with ASCi that was positive for presence of left-sided microbubbles who also had a transesophageal echocardiogram (TEE). TTE images were reviewed and shunts were categorized as large if there were more than 20 left-sided bubbles and early if they appeared within 5 cardiac cycles following opacification of right atrium. TEEs were then reviewed for presence of a PFO or atrial septal defect.

*Results: Of the initial 390 patients that were screened, 175 (45%) had TTEs with ASCi performed. Out of these 175 patients, 76 (43%) were positive for shunt with rest or provocation. Of those, 37 (49%) had an adequate TEE performed in our system and 9 (24%) were found to have a PFO. Early vs. late positivity was not significantly associated with presence of PFO (26% vs 20%, p=0.71) and of patients with positive studies revealing early and large shunting only 22% (4 of 18) had a PFO.

*Conclusions: Our finding of only 24% of positive ASCi studies being associated with PFO is substantially lower than reported in prior literature. Furthermore, there does not seem to be any significant benefit utilizing early positivity or size of shunt to differentiate between PFO and intra-pulmonary shunting in ESLD patients. High prevalence of concomitant hepatopulmonary syndrome as well as high-flow states renders traditional measures of shunt localization and categorization inaccurate. These findings suggest that ASCi lacks adequate positive predictive value to assess for PFO in patients with ESLD.

  • Tweet
  • Email
  • Print

To cite this abstract in AMA style:

Swanson BB, Salgia R, El-Bashir J, Parikh S. Accuracy Of Agitated Saline Contrast Echocardiography For Assessment Of Intracardiac Shunting In Preoperative Liver Transplant Patients [abstract]. Am J Transplant. 2020; 20 (suppl 3). https://atcmeetingabstracts.com/abstract/accuracy-of-agitated-saline-contrast-echocardiography-for-assessment-of-intracardiac-shunting-in-preoperative-liver-transplant-patients/. Accessed May 10, 2025.

« Back to 2020 American Transplant Congress

Visit Our Partner Sites

American Transplant Congress (ATC)

Visit the official site for the American Transplant Congress »

American Journal of Transplantation

The official publication for the American Society of Transplantation (AST) and the American Society of Transplant Surgeons (ASTS) »

American Society of Transplantation (AST)

An organization of more than 3000 professionals dedicated to advancing the field of transplantation. »

American Society of Transplant Surgeons (ASTS)

The society represents approximately 1,800 professionals dedicated to excellence in transplantation surgery. »

Copyright © 2013-2025 by American Society of Transplantation and the American Society of Transplant Surgeons. All rights reserved.

Privacy Policy | Terms of Use | Cookie Preferences