Affordable Access

Publisher Website

Failure of digital echocardiography to accurately diagnose intracardiac shunts

Authors
Journal
American Heart Journal
0002-8703
Publisher
Elsevier
Publication Date
Volume
155
Issue
1
Identifiers
DOI: 10.1016/j.ahj.2007.08.032
Disciplines
  • Medicine

Abstract

Background Intravenous agitated saline injection during transthoracic echocardiography assists in the detection of right to left intracardiac and intrapulmonary shunts. Whether digital echocardiography offers comparable sensitivity and specificity to analog tape recording to assess shunts is unknown. Technical differences between methods could lead to significant differences in shunt detection. Methods Agitated saline was injected intravenously at rest and with Valsalva in 189 consecutive patient studies (406 injections). Echocardiographers assessed presence and degree of left ventricle contrast on simultaneously recorded analog tape and digital echocardiography images in blinded fashion. Results Digital echocardiography had low overall sensitivity (rest 0.50, valsalva 0.63, late 0.39) compared to analog tape. Longer clip lengths improved sensitivity for detection of late contrast passage (rest 0.50, valsalva 0.67, late 0.46). Conclusion Digital echocardiography saline contrast studies have poor sensitivity for assessment of intracardiac shunts versus analog tape, and increasing clip length only modestly increases sensitivity. Joint Photographic Experts Group digital compression losses may be an important cause of failure to detect intracardiac shunts, including patent foramen ovale.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments

More articles like this

Failure of digital echocardiography to accurately...

on American Heart Journal January 2008

Transesophageal echocardiography and intracardiac...

on Journal of interventional card... February 2007

Role of three-dimensional echocardiography in mana...

on Echocardiography (Mount Kisco,... September 2014

The sensitivity of contrast echocardiography in de...

on Catheterization and cardiovasc... 1979
More articles like this..