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Case Reports
. 2020 Jan 8;2(2):261-265.
doi: 10.1016/j.jaccas.2019.11.032. eCollection 2020 Feb.

"Double-Parachute" Mitral Valve

Dany Minetto  1 , Coralie Blanche  1 , Anne-Lise Hachulla  2 , Tornike Sologashvili  3 , Philippe Meyer  1
Affiliations
Case Reports

"Double-Parachute" Mitral Valve

Dany Minetto et al. JACC Case Rep. .

Abstract

A 38-year-old asymptomatic man was referred by his general practitioner for a 3/6 systolic heart murmur, which was detected during a routine consultation. Echocardiography revealed a parachute mitral valve associated with a parachute-like membrane, causing significant subaortic obstruction that was eventually surgically resected with an excellent postoperative outcome. (Level of Difficulty: Beginner.).

Keywords: AMVT, accessory mitral valve tissue; LVOT, left ventricular outflow tract; MR sequences; MRI, magnetic resonance imaging; PMV, parachute mitral valve; congenital heart disease; echocardiography; mitral valve.

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Figures

None
Graphical abstract
Figure 1
Figure 1
Transthoracic Echocardiography (A) Accessory mitral valve tissue (AMVT) protruding through the aortic valve, parasternal long-axis view. (B) AMVT attached to the anterior mitral leaflet (AML), parasternal short-axis view. (C) Single posteromedial papillary muscle (PM), parasternal short-axis view. (D) High velocities in the left ventricular outflow tract measured by continuous wave Doppler (Pedoff transducer), nonstandard right parasternal view. See Video 1.
Figure 2
Figure 2
Transesophageal Echocardiography (A) AVMT membrane protruding through the AV and attached to the AML, mid-esophageal long-axis view. (B) AVMT membrane protruding between opened AL, mid-esophageal short-axis view. (C) Anterograde aortic flow around the AVMT membrane on color Doppler, mid-esophageal long-axis view. (D) Anterograde aortic flow around AVMT membrane on color Doppler, mid-esophageal short-axis view. See Videos 2 and 3. AL = aortal valve leaflets; AV = aortic valve; other abbreviations as in Figure 1.
Figure 3
Figure 3
Cardiac MRI AMVT attached to both the AML and the posteromedial PM on a long-axis view, cine cardiac MRI images. See Video 4. LA = left atrium; LV = left ventricle; MRI = magnetic resonance imaging; other abbreviations as in Figure 1.
Figure 4
Figure 4
Surgical View of the Accessory Mitral Valve Tissue
See this image and copyright information in PMC

References

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