ABSTRACT
We are reporting the use of three-dimensional transesophageal echocardiography as a supplement to two-dimensional transesophageal echocardiography in the percutaneous suture closure of the left atrial appendage.
Subject(s)
Atrial Appendage/diagnostic imaging , Atrial Fibrillation/diagnostic imaging , Cardiac Catheterization/methods , Cardiac Surgical Procedures/methods , Echocardiography, Three-Dimensional , Echocardiography, Transesophageal/methods , Pericardium/surgery , Aged , Atrial Appendage/physiopathology , Atrial Appendage/surgery , Atrial Fibrillation/physiopathology , Atrial Fibrillation/surgery , Humans , Male , Pericardium/diagnostic imagingSubject(s)
Clinical Competence , Health Knowledge, Attitudes, Practice , Heart Auscultation/methods , Aged , Aortic Valve Stenosis/diagnosis , Aortic Valve Stenosis/diagnostic imaging , Female , Heart Auscultation/trends , Humans , Male , Middle Aged , Mitral Valve Insufficiency/diagnosis , Mitral Valve Insufficiency/diagnostic imaging , Mitral Valve Stenosis/diagnosis , Mitral Valve Stenosis/diagnostic imaging , Tracheal Stenosis/diagnosis , Tracheal Stenosis/diagnostic imaging , UltrasonographyABSTRACT
We present a 32-year-old male with metastatic thymic carcinoma invading the left atrium in whom two-dimensional transesophageal echocardiography was able to differentiate a thrombus superimposed on the tumor.
Subject(s)
Echocardiography, Transesophageal/methods , Heart Atria/diagnostic imaging , Heart Neoplasms/diagnostic imaging , Heart Neoplasms/secondary , Thrombosis/complications , Thrombosis/diagnostic imaging , Adult , Heart Neoplasms/complications , Humans , MaleABSTRACT
Article Title: Association between Left Atrium Enlargement and Intradialytic Hypotension: Role of Diastolic Dysfunction in the Hemodynamic Complications during Hemodialysis.
Subject(s)
Echocardiography/methods , Heart Atria/diagnostic imaging , Heart Atria/pathology , Hypotension/diagnostic imaging , Hypotension/etiology , Renal Dialysis/adverse effects , Ventricular Dysfunction, Left/diagnostic imaging , Ventricular Dysfunction, Left/etiology , Female , Humans , Hypertrophy/diagnostic imaging , Hypertrophy/etiology , Male , Middle AgedABSTRACT
Twenty-nine patients with different tricuspid valve (TV) pathologies were studied by both two-dimensional transthoracic (2DTTE) and live/real time three-dimensional transthoracic echocardiography (3DTTE). A major contribution of 3DTTE over 2DTTE was the en face visualization of all three leaflets of the TV in all patients. This allowed accurate assessment of TV orifice area in patients with TV stenosis and carcinoid disease. Loss of TV leaflet tissue, defects in TV leaflets and size of TV systolic non-coaptation could also be delineated and resulted in identifying the mechanism of tricuspid regurgitation (TR) in patients with Ebstein's anomaly and rheumatic heart disease. Prolapse of TV leaflets could also be well visualized and enabled us to develop a schema for systematic assessment of individual segment prolapse which could help in surgical planning. The exact sites of chordae rupture in patients with flail TV as well as right ventricular papillary muscle rupture could be well seen by 3DTTE. 3DTTE also permitted sectioning of various TV masses for more specific diagnosis of their nature. In addition, color Doppler 3DTTE provided an estimate of quantitative evaluation of TR severity, since the exact shape and size of the vena contracta could be accurately assessed. In conclusion, our preliminary experience with 3DTTE has demonstrated substantial incremental value over 2DTTE in the assessment of various TV pathologies.
Subject(s)
Computer Systems , Echocardiography/methods , Image Processing, Computer-Assisted , Tricuspid Valve Insufficiency/pathology , Tricuspid Valve Prolapse/pathology , Tricuspid Valve Stenosis/pathology , Adult , Aged , Child, Preschool , Echocardiography, Doppler, Color/methods , Female , Humans , Male , Middle Aged , Predictive Value of Tests , Severity of Illness Index , Tricuspid Valve Insufficiency/diagnostic imaging , Tricuspid Valve Prolapse/diagnostic imaging , Tricuspid Valve Stenosis/diagnostic imagingABSTRACT
In this report, we present 34 patients in whom surgical intervention was undertaken for severe mitral insufficiency due to mitral valve prolapse (MVP). Location and severity of MVP and regurgitation were assessed preoperatively by live/real time three-dimensional transthoracic echocardiography and closely agreed with the surgical findings.
Subject(s)
Echocardiography, Three-Dimensional , Mitral Valve Prolapse/diagnostic imaging , Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Predictive Value of Tests , Sensitivity and SpecificityABSTRACT
Infected cardiac myxomas are extremely rare with only forty cases described in the literature. We report a case of an infected cardiac myxoma that presented in a manner similar to bacterial endocarditis. Our case is the first to be diagnosed using previously defined criteria, and is unusual in that transesophageal echocardiography was required to make the diagnosis.
Subject(s)
Heart Neoplasms/microbiology , Myxoma/microbiology , Staphylococcal Infections/diagnostic imaging , Adult , Echocardiography, Transesophageal , Heart Neoplasms/diagnostic imaging , Humans , Male , Myxoma/diagnostic imagingABSTRACT
Hemodynamic studies of regurgitant lesions in the heart focus on identifying a reliable noninvasive method of volumetric flow calculation. In these studies the influence of blood viscosity to the flowfield under pulsatile flow conditions and constraining wall geometry has not been examined in detail. Pulsatile flow studies in straight tubes have shown that viscous effects significantly influence the periodic flowfield, especially near the wall. The purpose of this study is to investigate the significance of transient effects in the flowfield proximal to a lesion under constraining wall geometry. The proximal flowfield was analyzed with computational fluid dynamics (CFD) computer simulations and color flow Doppler mapping (CFM). Three different stroke volumes and regurgitant waveforms were investigated for upstream wall orientations that varied from -64 degrees to +64 degrees (measured from the orifice plane). Results showed that for each upstream wall orientation, a single instantaneously normalized centerline velocity distribution characterized the flowfield throughout the cycle. The centerline distributions were in phase with the pressure gradient and almost identical to the corresponding steady-state distributions. Minor deviations were observed near the wall, where viscous effects were predominant. Transient flow effects such as blunt profiles and pressure velocity phase shifts, which were observed in straight circular tubes, were not observed in regurgitant orifice flowfields. This is true even under severe confinement conditions.
