Supravalvular Stenosing Ring of the Left Atrium

Oglietti, Jorge; Reul, George J.; Leachman, Robert D.; Cooley, Denton A.

doi:10.1016/s0003-4975(10)63891-x

Cited by 14 publications

(5 citation statements)

References 18 publications

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“…Microscopically, SMR has a dense layer of sclerotic tissue resembling valve substance but without the discrete layers of a valve, while the membrane of cor triatriatum is characterized by bilaminar muscular structure. 14 SMR should also be differentiated from left ventricular inflow obstruction caused by dilated coronary sinus, and from the rare, isolated invagination of left atrial free wall immediately proximal to the mitral valve, referred to as supramitral ridge.…”

mentioning

confidence: 99%

Supramitral obstruction of left ventricular inflow tract by supramitral ring

Konstantinov

Yun

Calderone

et al. 2004

Operative Techniques in Thoracic and Cardiovascular Surgery

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Supramitral ring (SMR) is a rare developmental abnormality of the supravalvular area of the mitral valve which produces a variable degree of obstruction to left ventricular filling. The morphological substrate of SMR consists of a fibro-membranous ring which is adherent to the atrial aspect of the mitral valve leaflets. SMR is morphologically and embryologically distinct from the more common entity of cor triatriatum, which consists of an obstructive fibro-muscular membrane located within the left atrium proximal to the left atrial appendage. Surgical resection of SMR is usually effective as evident by the generally benign postoperative hemodynamic outcome. Coexistent mitral valvular lesions are usual but not typically severe in degree.

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mentioning

confidence: 99%

Supramitral obstruction of left ventricular inflow tract by supramitral ring

Konstantinov

Yun

Calderone

et al. 2004

Operative Techniques in Thoracic and Cardiovascular Surgery

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“…Preoperative identification of the SVMR is the target for obtaining good surgical results. Both biplane echocardiogram and transesophageal echocardiography are the best methods to identify this congenital heart disease [5][6][7]. Transesophageal echocardiography also simplifies the diagnosis of supramitral ring and hemodynamic gradients via Doppler studies are also easily done [8].…”

Section: Discussionmentioning

confidence: 99%

The added value of real-time three-dimensional echocardiography in the diagnosis of supravalvar mitral ring: case report and review of the literature

et al. 2011

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Supravalvular mitral stenosis is a rare condition characterized by an abnormal ridge, with one or two orifices, covering and obstructing the mitral valve. Preoperative identification of the supravalvular ring is the target for obtaining good surgical results. Two-dimensional echocardiogram and transesophageal echocardiography both failed in reaching this objective. In this case, we showed that three-dimensional echocardiogram is a new technique that provides additional and more accurate echocardiographic characterization of congenital supravalvular mitral stenosis.

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“…Pre-operative identification of the membrane is possible by TEE [11,12], where angiography often fails [13]. However, there are still many limitations in visualization of the membrane, that is usually very thin; in this case, we performed an MRI examination, but as described in other papers [14,15], there was a failure in the detection of the supravalvular mitral ring.…”

Section: Discussionmentioning

confidence: 99%

Mitral supravalvular ring: a case report

Serra¹,

Testa²,

Ardissino³

2005

Cardiovasc Ultrasound

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Supravalvular mitral stenosis is a rare condition characterized by an abnormal ridge, with one or two orifices, covering and obstructing the mitral valve. Preoperative diagnosis is difficult with transtoracic echo (TTE), angiography and magnetic resonance imaging (MRI).In this case, a 36-year-old male, was admitted to our Heart department: He experienced progressive dyspnea on effort and at rest.Diagnosis was made by transesophageal echocardiography which showed, on apical 4-chamber section, an anulare structure attached since a membrane to the atrial wall anterior mitral valve leaflet and just proximal to the posterior mitral leaflet.Pre-operative identification of the supravalvular mitral ring is the target for obtaining good surgical results. Cineangiography and MRI both failed in reaching this objective, whereas, transesophageal echocardiography is the best method to identify this congenital heart disease.Using TEE the identification is not only possible but also easier.

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Supravalvular Stenosing Ring of the Left Atrium

Cited by 14 publications

References 18 publications

Supramitral obstruction of left ventricular inflow tract by supramitral ring

Supramitral obstruction of left ventricular inflow tract by supramitral ring

The added value of real-time three-dimensional echocardiography in the diagnosis of supravalvar mitral ring: case report and review of the literature

Mitral supravalvular ring: a case report

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