• J Echocardiogr · Dec 2012

    Double-chambered right ventricle presenting significant outflow tract obstruction only in the right decubitus position.

    • Shuji Hayashi, Hirotsugu Yamada, Susumu Nishio, Noriko Tomita, Junko Hotchi, Mika Bando, Maya Nakagawa, Rina Tamai, Daichi Hirota, Yukina Hirata, and Masataka Sata.
    • Ultrasound Examination Center, Tokushima University Hospital, 2-50-1 Kuramoto, Tokushima, 770-8503, Japan.
    • J Echocardiogr. 2012 Dec 1; 10 (4): 146-7.

    AbstractA 75-year-old man was referred to our echocardiography laboratory for presurgical evaluation. His past history included ventricular septal defect closure. He reported chest discomfort in the right decubitus position. Two-dimensional and Doppler echocardiography revealed an anomalous muscle bundle with accelerated blood flow in the right ventricle. The peak flow velocity of the flow increased from 1.4 m/s in the left decubitus position to 2.9 m/s in the right decubitus position. Double-chamber right ventricle with intermittent mid-ventricular obstruction during the right decubitus position was confirmed by transesophageal echocardiography.

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