Lutembacher's syndrome: Difference between revisions
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==Pathophysiology== | ==Pathophysiology== | ||
The presence of both ASD and mitral stenosis occuring together, usually modify the clinical and hemodynamic manifestation of each other. | The presence of both ASD and mitral stenosis occuring together, usually modify the clinical and hemodynamic manifestation of each other. | ||
The presence of an ASD creates a second exit ([[left-to-right shunt]]) for the blood in the left atrium; consequently reducing the hemodynamic effects of a severe mitral stenosis. In the same fashion, the pressure in the left atrium, pulmonary veins and the pulmonary capillaries decrease if the ASD is large. Therefore, the typical presentation of mitral stenosis as a result of pulmonary venous congestion such as orthopnea, paroxsymal nocturnal dyspnea, hemoptysis and pulmonary edema are attenuated or diminished, and are often substituted by symptoms of low volume output such as weakness and fatigue | The presence of an ASD creates a second exit ([[left-to-right shunt]]) for the blood in the left atrium; consequently reducing the hemodynamic effects of a severe mitral stenosis. In the same fashion, the pressure in the left atrium, pulmonary veins and the pulmonary capillaries decrease if the ASD is large. Therefore, the typical presentation of mitral stenosis as a result of pulmonary venous congestion such as orthopnea, paroxsymal nocturnal dyspnea, hemoptysis and pulmonary edema are attenuated or diminished, and are often substituted by symptoms of low volume output such as weakness and fatigue.<ref name="pmid16198889">{{cite journal| author=Olivares-Reyes A, Al-Kamme A| title=Lutembacher's syndrome with small atrial septal defect diagnosed by transthoracic and transesophageal echocardiography that underwent mitral valve replacement. | journal=J Am Soc Echocardiogr | year= 2005 | volume= 18 | issue= 10 | pages= 1105 |pmid=16198889 | doi=10.1016/j.echo.2005.01.017 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=16198889 }} </ref> | ||
==Epidemiology and Demographics== | ==Epidemiology and Demographics== | ||
Revision as of 14:38, 7 August 2013
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor-in-Chief: Ayokunle Olubaniyi, M.B,B.S
Overview
Lutembacher's syndrome is a rare form of congenital heart disease. It refers to a combination of congenital atrial septal defect, or even a patent foramen ovale (PFO) complicated by an acquired mitral stenosis. The atrial septal defect is usually a specific type called a secundum atrial septal defect. This syndrome was named after Renee Lutembacher, a french cardiologist.
Pathophysiology
The presence of both ASD and mitral stenosis occuring together, usually modify the clinical and hemodynamic manifestation of each other. The presence of an ASD creates a second exit (left-to-right shunt) for the blood in the left atrium; consequently reducing the hemodynamic effects of a severe mitral stenosis. In the same fashion, the pressure in the left atrium, pulmonary veins and the pulmonary capillaries decrease if the ASD is large. Therefore, the typical presentation of mitral stenosis as a result of pulmonary venous congestion such as orthopnea, paroxsymal nocturnal dyspnea, hemoptysis and pulmonary edema are attenuated or diminished, and are often substituted by symptoms of low volume output such as weakness and fatigue.[1]
Epidemiology and Demographics
This is a very rare disease. The incidence is 0.001/1000000[2]. This syndrome is more frequently seen in adults because the mitral stenosis is usually an acquired valvulopathy of rheumatic origin. It is also more commonly observed in female patients because both ASD and MS are more prevalent in this gender.
Complications and Prognosis
Complications are usually related to a late diagnosis. They include pulmonary hypertension and heart failure. Early diagnosis and surgical treatment has a good prognostic value.
Diagnosis
History and Symptoms
The presentation depends on the size of ASD, extent of mitral stenosis, compliance of the right ventricle and degree of changes in the pulmonary circulation.[1].
Physical Examination
Chest X Ray
Echocardiography
Treatment
Medical Therapy
Surgery
References
- ↑ 1.0 1.1 Olivares-Reyes A, Al-Kamme A (2005). "Lutembacher's syndrome with small atrial septal defect diagnosed by transthoracic and transesophageal echocardiography that underwent mitral valve replacement". J Am Soc Echocardiogr. 18 (10): 1105. doi:10.1016/j.echo.2005.01.017. PMID 16198889.
- ↑ Berry NS, Bauman JL, Gallastegui JL, Bauma W, Beckman KJ, Hariman RJ (1988). "Analysis of antiarrhythmic drug concentrations determined during electrophysiologic drug testing in patients with inducible tachycardias". Am J Cardiol. 61 (11): 922–4. PMID 3354470.