黒田 敏男, 椎名 明, 鶴田 貴志夫, 難波 義治, 藤田 俊弘, 三橋 武司, 山沢 正則, 矢沢 義行, 後藤 和夫, 鈴木 修, 柳沼 淑夫, 細田 瑳一

Toshio KURODA, Akira SHIINA, Kishio TSURUDA, Yoshiharu NAMBA, Toshihiro FUJITA, Takeshi MITSUHASHI, Masanori YAMASAWA, Yoshiyuki YAZAWA, Kazuo GOTOH, Osamu SUZUKI, Toshio YAGINUMA, Saichi HOSODA

自治医科大学循環器内科

Department of Cardiology, Jichi Medical School

キーワード : Two-dimensional echocardiography, Group medical examination, Electrocardiography, Left ventricular hypertrophy, Left ventricular function

The two-dimensional echocardiography (2-D echo) was used for group medical examination in 1162 cases (439 males, 723 females, mean age 59) who lived in relatively rural 7 areas in Japan. The incidence and severity of left ventricular hypertrophy (LVH) diagnosed by 2-D echo and ECG was compared.
1) LVH was more frequently detected in 2-D echo (218 cases) than ECG (95 cases) and agreement of both methods for diagnosis of LVH was low (43.6%).
2) The highest agreement between both methods was obtained when moderate/severe LVH by 2-D echo was compared with ECG findings of high voltage with ST/T change. Moreover, making diagnosis of asymmtrical septal hypertrophy (ASH) by ECG was suggested to be difficult.
3) In patients with moderate or severe LVH, more than 50% of ASH was recognized.
4) In patients with LVH diagnosed by 2-D echo, the ratio of VST and LVPWT was increased according to severity of LVH. Ejection fraction significantly decreased according to severity of LVH.
5) The 2-D echo thus provided more evident morphological and functional information in LVH, and would be of great value for assessing long term follow-up in cases with LVH and performing one of roles in preventive medicine.