An unusual cause of left ventricular outflow tract obstruction: obstructive pannus on the left ventricular side of a mechanical mitral prosthesis

Kalçık, Macit; Toprak, Cüneyt; Gürsoy, Mustafa Ozan; Yesi̇n, Mahmut; Karakoyun, Süleyman; Özkan, Mehmet

doi:10.1007/s12574-014-0218-0

Cited by 2 publications

(6 citation statements)

References 2 publications

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“…Pannus formation is thought to represent a chronic inflammatory reaction characterized by macrophage infiltration related to persistent exposure to foreign prosthetic material . Pannus has been described in both mechanical and tissue valves and usually occurs on the upstream (atrial) surface of mitral prosthetics, where it may obstruct inflow. Less often, excess tissue accumulates on the downstream (ventricular) surface, where it may obstruct the LVOT.…”

Section: Lvot Obstruction Following Surgical Mitral Valve Replacementmentioning

confidence: 99%

“…Figure is an echocardiographic image from a patient who developed LVOT obstruction due to pannus overgrowth on the ventricular side of a mechanical mitral prosthesis. Hemodynamically significant LVOT obstruction resulting from pannus overgrowth has been successfully treated with valve re‐replacement …”

Section: Lvot Obstruction Following Surgical Mitral Valve Replacementmentioning

confidence: 99%

“…Pannus formation is thought to represent a chronic inflammatory reaction characterized by macrophage infiltration related to persistent exposure to foreign prosthetic material. 23,24 Pannus has been described in both mechanical 25 and tissue valves 26 It is important to differentiate pannus from thrombus. In contrast to thrombus, the echo density of pannus typically exceeds that of the interventricular septum.…”

Section: Pannus Overgrowthmentioning

confidence: 99%

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Mechanisms, pathophysiology, and diagnostic imaging of left ventricular outflow tract obstruction following mitral valve surgery and transcatheter mitral valve replacement

et al. 2019

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Left ventricular outflow tract obstruction is a serious complication of mitral valve surgery (repair and replacement) and transcatheter mitral valve replacement. An appreciation of the various mechanisms which cause outflow obstruction in these settings is critical to avoiding this complication and to initiating appropriate treatment. This article discusses the mechanisms, pathophysiology, and imaging of left ventricular outflow tract obstruction which can arise following insertion of a variety of mitral valve prosthetics.

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Section: Lvot Obstruction Following Surgical Mitral Valve Replacementmentioning

confidence: 99%

Section: Lvot Obstruction Following Surgical Mitral Valve Replacementmentioning

confidence: 99%

“…Pannus formation is thought to represent a chronic inflammatory reaction characterized by macrophage infiltration related to persistent exposure to foreign prosthetic material. 23,24 Pannus has been described in both mechanical 25 and tissue valves 26 It is important to differentiate pannus from thrombus. In contrast to thrombus, the echo density of pannus typically exceeds that of the interventricular septum.…”

Section: Pannus Overgrowthmentioning

confidence: 99%

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Mechanisms, pathophysiology, and diagnostic imaging of left ventricular outflow tract obstruction following mitral valve surgery and transcatheter mitral valve replacement

et al. 2019

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“…Preservation of SVA during MVR in rheumatic valve disease may provoke pannus tissue formation on the left ventricular side of the mitral prostheses due to the presence of intense fibrosis and calcification in rheumatic valves. 2D and RT3DTEE have incremental value in the diagnosis of pannus formation on prosthetic heart valves …”

Section: Case Presentationmentioning

confidence: 99%

“…2D and RT3DTEE have incremental value in the diagnosis of pannus formation on prosthetic heart valves. [2][3][4]…”

mentioning

confidence: 99%

Left Ventricular Side Obstructive Pannus Formation after Rheumatic Mitral Valve Replacement with Preservation of the Subvalvular Apparatus

et al. 2015

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Mini Abstract The preservation of the subvalvular apparatus (SVA) during mitral valve replacement (MVR) surgery due to rheumatic valve disease remains controversial. The presence of intense fibrosis and calcification in rheumatic valves may promote impingement of the pannus tissue on the prosthesis and cause obstruction of the mitral inflow tract. Here we present an obstructive left ventricular side mitral pannus tissue image in a patient who had undergone rheumatic MVR with the preservation of SVA.

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An unusual cause of left ventricular outflow tract obstruction: obstructive pannus on the left ventricular side of a mechanical mitral prosthesis

Cited by 2 publications

References 2 publications

Mechanisms, pathophysiology, and diagnostic imaging of left ventricular outflow tract obstruction following mitral valve surgery and transcatheter mitral valve replacement

Mechanisms, pathophysiology, and diagnostic imaging of left ventricular outflow tract obstruction following mitral valve surgery and transcatheter mitral valve replacement

Left Ventricular Side Obstructive Pannus Formation after Rheumatic Mitral Valve Replacement with Preservation of the Subvalvular Apparatus

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