Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography
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J Am Soc Echocardiogr · Aug 2013
Clinical Trial Controlled Clinical TrialNew three-dimensional speckle-tracking echocardiography identifies global impairment of left ventricular mechanics with a high sensitivity in childhood cancer survivors.
The aim of this case-control study was to assess the usefulness of three-dimensional (3D) speckle-tracking echocardiography in the evaluation of global left ventricular (LV) myocardial performance in adolescent and adult survivors of childhood cancers. ⋯ Three-dimensional speckle-tracking echocardiography enables the derivation of an index of LV global performance that incorporates LV 3D strain, dyssynchrony, and torsion for the sensitive detection of altered LV mechanics in childhood cancer survivors.
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J Am Soc Echocardiogr · Aug 2013
Admission wall motion score and quantitative ST-segment depression in the assessment of 30-day mortality in patients with first non-ST-segment elevation acute coronary syndromes.
Whether admission myocardial wall motion score (WMS) in non-ST-segment elevation acute coronary syndromes might be a better predictor of 30-day mortality than currently recognized prognostic markers is unknown. ⋯ In comparison with quantitative ST-segment depression, troponin I, and TIMI risk score, WMS on admission is a better early predictor of 30-day mortality in patients with first non-ST-segment elevation acute coronary syndromes.
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J Am Soc Echocardiogr · Aug 2013
Comparative StudyComparison of echocardiographic measurements of left ventricular volumes to full volume magnetic resonance imaging in normal and diseased rats.
Clinical two-dimensional (2D) and clinical three-dimensional echocardiography are validated against cardiac magnetic resonance imaging (CMR), the gold standard for left ventricular (LV) volume measurement. In rodents, there is no widely accepted echocardiographic measure of whole LV volumes, and CMR measurements vary among studies. The aim of this study was to compare LV volumes by 2D echocardiography (using a hemisphere-cylinder [HC] model) with HC and full-volume (FV) CMR in normal and diseased rats to measure the impact of geometric models and imaging modalities. ⋯ Concordant measures of LV volume and function were obtained using (1) a relatively simple HC model of the left ventricle inclusive of two orthogonal 2D echocardiographic planes and (2) FV CMR in normal and diseased rats. The HC model appeared to compensate for the underestimation of LV dimensions by echocardiography.
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J Am Soc Echocardiogr · Aug 2013
Three-dimensional transesophageal echocardiographic evaluation of coronary involvement in patients with acute type A aortic dissection.
Acute Stanford type A aortic dissection (AAD) with coronary involvement is associated with high mortality. However, coronary involvement is not always successfully visualized by computed tomography and two-dimensional (2D) transesophageal echocardiography (TEE). The aim of this study was to test the hypothesis that three-dimensional (3D) TEE can detect coronary involvement in patients with AAD. ⋯ Three-dimensional TEE reduced the number of cases evaluated as unclear coronary involvement by computed tomography and 2D TEE. In patients with AAD, 3D TEE allows evaluation of the status of coronary ostia in the operating room.
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J Am Soc Echocardiogr · Jul 2013
Impact of propofol anesthesia induction on cardiac function in low-risk patients as measured by intraoperative Doppler tissue imaging.
Despite a few experimental studies showing a dose-dependent myocardial depressive effect of propofol anesthesia induction, few clinical data are available to determine its precise impact on myocardial function, probably because of its brevity and a lack of appropriate evaluation tools. The purpose of this study was to examine the impact of propofol-based anesthesia induction on left ventricular (LV) function using Doppler tissue and speckle-tracking imaging. ⋯ Propofol anesthesia induction diminished LV and atrial contraction in low-risk patients with prior normal LV function. Further studies are needed to understand the clinical implications, particularly for higher risk populations.