Back to Search
Start Over
Transesophageal echocardiographic demonstration of distinct mechanisms for right to left shunting across a patent foramen ovale in the absence of pulmonary hypertension.
- Source :
-
Journal of the American College of Cardiology [J Am Coll Cardiol] 1991 Oct; Vol. 18 (4), pp. 1112-7. - Publication Year :
- 1991
-
Abstract
- The optimal visualization of the atrial septum and fossa ovalis by transesophageal echocardiography was utilized to demonstrate saline contrast transit across the atrial septum and to relate it to the motion of the flap valve (septum primum) of the fossa ovalis. In three cases, three distinct mechanisms of right to left interatrial shunting in the absence of right ventricular systolic hypertension were identified: 1) transient spontaneous reversal of the left to right atrial pressure differential with each cardiac cycle; 2) sustained elevation of right atrial pressure above left atrial pressure induced by respiratory maneuvers; and 3) aberrant flow redirection across the foramen ovale due to a large right atrial mass. Any of these three mechanisms may be operative during paradoxic embolism in the absence of elevation of right ventricular pressures.
- Subjects :
- Aged
Cardiac Catheterization
Coronary Circulation physiology
Female
Heart Septal Defects, Atrial complications
Heart Septal Defects, Atrial physiopathology
Humans
Intracranial Embolism and Thrombosis etiology
Male
Middle Aged
Monitoring, Intraoperative methods
Pulmonary Wedge Pressure physiology
Sodium Chloride
Echocardiography methods
Heart Septal Defects, Atrial diagnostic imaging
Hypertension, Pulmonary
Subjects
Details
- Language :
- English
- ISSN :
- 0735-1097
- Volume :
- 18
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Journal of the American College of Cardiology
- Publication Type :
- Academic Journal
- Accession number :
- 1894856
- Full Text :
- https://doi.org/10.1016/0735-1097(91)90775-5