Turbulent left-to-right shunt flow through the interatrial septum suggesting high left atrial pressure in patients with heart failure with preserved ejection fraction.
Lutembacher's syndrome is a combination of interatrial septal (IAS) defect or patent foramen ovale (PFO), associated with mitral stenosis. High left atrial (LA) pressure in mitral stenosis exaggerates left-to-right shunt in patients with interatrial communication. We present a case of heart failure with preserved ejection fraction. Echocardiography revealed normal left ventricular systolic function without mitral stenosis and turbulent left-to-right shunt through the IAS. The peak velocity of the shunt flow was 2.3 m/s and the estimated pressure gradient was 22 mmHg, indicating high LA pressure. The presence of turbulent left-to-right shunt through the IAS is helpful for detecting high LA pressure.
Department of Medicine and Geriatrics, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi, 783-8505, Japan.
Kayo
K
Hayato
Department of Medicine and Geriatrics, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi, 783-8505, Japan. matsumur@kochi-u.ac.jp.
Yoshihisa
Y
Matsumura
Department of Medicine and Geriatrics, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi, 783-8505, Japan.
Yasumasa
Y
Kawada
Department of Medicine and Geriatrics, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi, 783-8505, Japan.
Yuichi
Y
Baba
Department of Medicine and Geriatrics, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi, 783-8505, Japan.
Katsutoshi
K
Tanioka
Department of Medicine and Geriatrics, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi, 783-8505, Japan.
Makoto
M
Okawa
Department of Medicine and Geriatrics, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi, 783-8505, Japan.
Toru
T
Kubo
Department of Medicine and Geriatrics, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi, 783-8505, Japan.
Naohito
N
Yamasaki
Department of Medicine and Geriatrics, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi, 783-8505, Japan.
Hiroaki
H
Kitaoka
Department of Medicine and Geriatrics, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi, 783-8505, Japan.
Masanori
M
Nishinaga
Department of Medicine and Geriatrics, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku, Kochi, 783-8505, Japan.
Yoshinori
Y
Doi
Echocardiography; Heart failure; Interatrial septum; Lutembacher’s syndrome; Patent foramen ovale