Abstract
METHODS: Simultaneous echocardiography and left ventricular (LV) catheterization during dobutamine stress were performed in 20 patients with DCM, and echocardiography was performed in 31 control subjects. Dobutamine was infused at a starting dose of 5 μg/kg/min for 5 minutes and then at 10 μg/kg/min. Peak endomyocardial radial strain (ɛ) and systolic strain rate (SRsys ) measured with echocardiography and the maximum first derivative of LV pressure (LV dP/dtmax ) derived from catheterization were used as indices of contractility. Their percentage change from baseline to the dose of 10 μg/kg/min was calculated.
RESULTS: The ɛ and SRsys were significantly smaller in DCM patients than in controls. The LV dP/dtmax , ɛ, and SRsys were significantly higher at the dose of 10 μg/kg/min than at baseline. The percentage change in SRsys was significantly correlated with the percentage change in LV dP/dtmax .
CONCLUSIONS: Strain rate imaging during dobutamine stress in DCM might prove noninvasively informative for the evaluation of myocardial contractile reserve and provide insight into LV systolic dysfunction.
PURPOSE: Myocardial contractile reserve is associated with clinical prognosis in patients with dilated cardiomyopathy (DCM). We assessed myocardial contractile reserve using tissue Doppler strain rate imaging with dobutamine stress echocardiography in DCM patients.
| Original language | English |
|---|---|
| Pages (from-to) | 555-560 |
| Number of pages | 6 |
| Journal | Journal of clinical ultrasound : JCU |
| Volume | 44 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 12-11-2016 |
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All Science Journal Classification (ASJC) codes
- Radiology Nuclear Medicine and imaging
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Endomyocardial radial strain rate imaging during dobutamine stress echocardiography for the evaluation of contractile reserve in patients with dilated cardiomyopathy. / Minoshima, Makoto; Noda, Akiko; Kobayashi, Masakazu; Miyata, Seiko; Hirashiki, Akihiro; Okumura, Takahiro; Izawa, Hideo; Ishii, Hideki; Kondo, Takahisa; Murohara, Toyoaki.
In: Journal of clinical ultrasound : JCU, Vol. 44, No. 9, 12.11.2016, p. 555-560.Research output: Contribution to journal › Article
TY - JOUR
T1 - Endomyocardial radial strain rate imaging during dobutamine stress echocardiography for the evaluation of contractile reserve in patients with dilated cardiomyopathy
AU - Minoshima, Makoto
AU - Noda, Akiko
AU - Kobayashi, Masakazu
AU - Miyata, Seiko
AU - Hirashiki, Akihiro
AU - Okumura, Takahiro
AU - Izawa, Hideo
AU - Ishii, Hideki
AU - Kondo, Takahisa
AU - Murohara, Toyoaki
PY - 2016/11/12
Y1 - 2016/11/12
N2 - METHODS: Simultaneous echocardiography and left ventricular (LV) catheterization during dobutamine stress were performed in 20 patients with DCM, and echocardiography was performed in 31 control subjects. Dobutamine was infused at a starting dose of 5 μg/kg/min for 5 minutes and then at 10 μg/kg/min. Peak endomyocardial radial strain (ɛ) and systolic strain rate (SRsys ) measured with echocardiography and the maximum first derivative of LV pressure (LV dP/dtmax ) derived from catheterization were used as indices of contractility. Their percentage change from baseline to the dose of 10 μg/kg/min was calculated.RESULTS: The ɛ and SRsys were significantly smaller in DCM patients than in controls. The LV dP/dtmax , ɛ, and SRsys were significantly higher at the dose of 10 μg/kg/min than at baseline. The percentage change in SRsys was significantly correlated with the percentage change in LV dP/dtmax .CONCLUSIONS: Strain rate imaging during dobutamine stress in DCM might prove noninvasively informative for the evaluation of myocardial contractile reserve and provide insight into LV systolic dysfunction.PURPOSE: Myocardial contractile reserve is associated with clinical prognosis in patients with dilated cardiomyopathy (DCM). We assessed myocardial contractile reserve using tissue Doppler strain rate imaging with dobutamine stress echocardiography in DCM patients.
AB - METHODS: Simultaneous echocardiography and left ventricular (LV) catheterization during dobutamine stress were performed in 20 patients with DCM, and echocardiography was performed in 31 control subjects. Dobutamine was infused at a starting dose of 5 μg/kg/min for 5 minutes and then at 10 μg/kg/min. Peak endomyocardial radial strain (ɛ) and systolic strain rate (SRsys ) measured with echocardiography and the maximum first derivative of LV pressure (LV dP/dtmax ) derived from catheterization were used as indices of contractility. Their percentage change from baseline to the dose of 10 μg/kg/min was calculated.RESULTS: The ɛ and SRsys were significantly smaller in DCM patients than in controls. The LV dP/dtmax , ɛ, and SRsys were significantly higher at the dose of 10 μg/kg/min than at baseline. The percentage change in SRsys was significantly correlated with the percentage change in LV dP/dtmax .CONCLUSIONS: Strain rate imaging during dobutamine stress in DCM might prove noninvasively informative for the evaluation of myocardial contractile reserve and provide insight into LV systolic dysfunction.PURPOSE: Myocardial contractile reserve is associated with clinical prognosis in patients with dilated cardiomyopathy (DCM). We assessed myocardial contractile reserve using tissue Doppler strain rate imaging with dobutamine stress echocardiography in DCM patients.
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U2 - 10.1002/jcu.22376
DO - 10.1002/jcu.22376
M3 - Article
C2 - 27417656
AN - SCOPUS:85028246437
VL - 44
SP - 555
EP - 560
JO - Journal of Clinical Ultrasound
JF - Journal of Clinical Ultrasound
SN - 0091-2751
IS - 9
ER -