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Dynamic left ventricular outflow tract obstruction in a patient with acute coronary syndrome and without the apical akinesia: Potential alternative mechanisms causing a dynamic left ventricular outflow tract obstruction other than a compensatory basal hyperkinesis.
Fujiwara, Momo; Kawai, Keisuke; Kanazawa, Natsuki; Noguchi, Masamitsu; Hasokawa, Minoru; Nanahoshi, Masakazu; Kobayashi, Seiichi.
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  • Fujiwara M; Division of Cardiovascular Medicine, Department of Internal Medicine, Kasai City Hospital, Hyogo, Japan.
  • Kawai K; Division of Cardiovascular Medicine, Department of Internal Medicine, Kasai City Hospital, Hyogo, Japan.
  • Kanazawa N; Division of Cardiovascular Medicine, Department of Internal Medicine, Kasai City Hospital, Hyogo, Japan.
  • Noguchi M; Division of Cardiovascular Medicine, Department of Internal Medicine, Kasai City Hospital, Hyogo, Japan.
  • Hasokawa M; Division of Cardiovascular Medicine, Department of Internal Medicine, Kasai City Hospital, Hyogo, Japan.
  • Nanahoshi M; Division of Cardiovascular Medicine, Department of Internal Medicine, Kasai City Hospital, Hyogo, Japan.
  • Kobayashi S; Division of Cardiovascular Medicine, Department of Internal Medicine, Kasai City Hospital, Hyogo, Japan.
Echocardiography ; 38(3): 460-468, 2021 03.
Article en En | MEDLINE | ID: mdl-33629388
The mechanism for dynamic left ventricular outflow tract obstruction (LVOTO) after acute coronary syndromes (ACS) is thought to be apical infarction with compensatory hyperkinesia of the residual normally perfused basal segments of the myocardium. However, herein, we report a patient with ACS and dynamic LVOTO (peak gradient of 250 mm Hg at rest) that could not be secondary to apical akinesia. We propose a potential alternative mechanism leading to dynamic LVOTO in ACS, namely, the interplay between sigmoid septum, basal hyperkinesis, and outflow tract narrowing induced by afterload reduction due to acute myocardial ischemia itself.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Obstrucción del Flujo Ventricular Externo / Síndrome Coronario Agudo / Cardiopatías Congénitas Límite: Humans Idioma: En Revista: Echocardiography Asunto de la revista: CARDIOLOGIA / DIAGNOSTICO POR IMAGEM Año: 2021 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Obstrucción del Flujo Ventricular Externo / Síndrome Coronario Agudo / Cardiopatías Congénitas Límite: Humans Idioma: En Revista: Echocardiography Asunto de la revista: CARDIOLOGIA / DIAGNOSTICO POR IMAGEM Año: 2021 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Estados Unidos