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英文誌(2004-)

Journal of Medical Ultrasonics

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1991 - Vol.18

Vol.18 No.03

Original Article(原著)

(0248 - 0256)

パルスドプラ心臓超音波法による慢性呼吸器疾患の肺動脈圧の評価

Estimate of Pulmonary Arterial Hypertension by a Color-Pulsed Doppler Echocardiography in Chronic Respiratory Disease

福村 基之1, 玉城 繁3, 家永 浩樹3, 檀原 高3, 高本 真一2, 鈴木 俊光1

Motoyuki FUKUMURA1, Shigeru TAMAKI3, Hiroki IENAGA3, Takashi DAMBARA3, Shinichi TAKAMOTO2, Toshimitsu SUZUKI1

1公立昭和病院呼吸器科(現国立療養所東京病院呼吸器内科), 2公立昭和病院心臓血管外科, 3順天堂大学呼吸器内科

1Respiratory Unit, Showa General Hospital, 2Cardiovascular Surgery, Showa General Hospital, 3Department of Respiratory Medicine, Juntendo University, School of Medicine

キーワード : Chronic respiratory disease, Pulmonary arterial pressure, Right heart catheterization, Color-pulsed Doppler echocardiography

In order to noninvasively estimate pulmonary arterial pressure, we examined the clinical validity of a color-pulsed Doppler echocardiography in 17 patients with chronic respiratory disease. We, then compared them with the findings from a right-heart catheterization.
The parameters obtained by the color-pulsed Doppler echocardiography included the pre-ejection period (PEP), the acceleration time (AT) and the ejection time (ET).
The mean pulmonary arterial pressure obtained by a right-heart catheterization showed a high correlation with the PEP/AT (r=0.92).
Although the M-mode echocardiography supplied only qualitative information of the pulmonary arterial pressure, the pulmonary arterial flow spectral analysis by the color-pulsed Doppler echocardiography permitted a quantitative estimate of pulmonary arterial pressure in patients with chronic respiratory diseases.
Aeration of the lung sometimes obstructs right-heart visualization (information about the right heart was inadequate in 15 out of 46 cases in a previous M-mode echocardiographic study); however, once we obtained a pulmonary arterial flow pattern as a color image, we could reliably estimate the pulmonary arterial pressure for the above flow parameters (pulmonary arterial flow pattern could not be determined in only 5 of 46 similar cases).
We, therefore, conclude that the PEP/AT is a useful parameter for estimating the pulmonary arterial pressure, and that the detectability of the pulmonary arterial Doppler signal by a color-pulsed Doppler echocardiography is better than that of the pulmonary arterial valves or right ventricular wall through a M-mode echocardiography in patients with chronic respiratory diseases.