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Simultaneous pressure recording in mid-ventricular obstructive hypertrophic cardiomyopathy. 2012
Yousuke Hanaoka, and
Ikuo Misumi, and
Taku Rokutanda, and
Ryuichiro Akahoshi, and
Mitsuhiro Matsumoto, and
Tomohiro Sakamoto, and
Koichi Kaikita, and
Megumi Yamamuro, and
Seigo Sugiyama, and
Hisao Ogawa
Internal Medicine, Kumamoto Saisyunsou Hospital, Japan.
A 70-year-old man was diagnosed with mid-ventricular obstructive hypertrophic cardiomyopathy (MVOHCM) with apical aneurysm and paradoxic jet flow. At cardiac catheterization, pressure study showed that there was a markedly high pressure-gradient of 90 mmHg between the apex and the base in systole. Apical pressure was 350 mmHg after premature ventricular contraction. The apical aneurysm was already dilated and spherical in late systole; the absence of active relaxation was considered to be the cause of the paradoxic jet flow. In this report, we suggest the pathogenesis of left ventricular apical aneurysm and paradoxic jet flow in MVOHCM.
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