Online Journal
IF値: 1.878(2021年)→1.8(2022年)


Journal of Medical Ultrasonics

にて英文誌のFull textを閲覧することができます.


1999 - Vol.26

Vol.26 No.12

Original Article(原著)

(1165 - 1175)

負荷心エコー図法におけるMモード法とドプラ法から得られた心拍出量の比較による心筋壁運動異常の一評価法: 負荷時の心筋局所壁運動異常を表現するパラメーターの検討 (1)

Evaluation of Wall Motion Abnormality by Comparing Values of Cardiac Output Obtained by M-Mode and Doppler Echocardiographies: Parameter Revealing Wall Motion Abnormality in Stress Echocardiography (1)

大川井 宏明1, 仁田 桂子2, 高橋 和彦3, 片平 美明2, 薗部 太郎1, 藤田 雅史2, 中島 博行2, 仁田 新一1

Hiroaki OKAWAI1, Keiko NITTA2, Kazuhiko TAKAHASHI3, Yoshiaki KATAHIRA2, Tarou SONOBE1, Masashi FUJITA2, Hiroyuki NAKAJIMA2, Shin-ichi NITTA1

1東北大学加齢医学研究所病態計測制御研究分野, 2東北厚生年金病院循環器科, 3宮城県立瀬峰病院循環器科 (現在: 高橋ハートクリニック)

1Institute of Development, Aging, and Cancer, Tohoku University, 4-1 Seiryo-machi, Aoba-ku, Sendai-shi 980-8575, Japan, 2Department of Cardiovascular Diseases, Tohoku Kosei Nenkin Hospital, 10 Takasago, Hukumuro-aza, Miyagino-ku, Sendai-shi 983-0005,Japan, 3Department of Cardiovascular Diseases, Miyagi Prefectural Semine Hospital, 55-2 Osato, Tominegishi, Semine-cho, Kurihara-gun, Miyagi 989-4500, Japan

キーワード : Coronary stenosis, Regional cardiac function, Regional wall motion abnormality (WMA), Stress echocardiography, Stroke volume

Dobutamine and dipyridamole stress echocardiographies are both well able to detect myocardial ischemia resulting from coronary diseases by recognizing the regional wall motion abnormality (WMA). Here we report a method for describing WMA in detail. In pharmacological stress echocardiography, because of difficulties in recognizing the two-dimensional pattern, accuracy sometimes depends upon the skill of the operator. Two stroke volumes obtained using the M-mode and Doppler methods were examined to detect abnormal regional cardiac function by the dipyridamole stress test. Stroke volume obtained by the M-mode reflects regional cardiac function and that estimated from the outflow using the Doppler method reflects total cardiac function. These two stroke volumes were compared. In normal subjects and patients with coronary-diseases. The results indicated consistent discrepancies between these two stroke volumes in the ischemic hearts as a result of coronary stenosis, whereas changes in stroke volumes in the normal subjects showed the same tendency. This method of combining information about the regional and total functions is thus useful in examining the WMA and regional cardiac function, although it can not be applied to subjects whose stroke volume does not increase under stress.