좌심실 기능평가에 있어 이면성 심초음파 검사를 이용한 Global Circumferential Strain의 유용성 (Global Circumferential Strain by 2-Dimensional Speckle Tracking Method for the Evaluation of the Left Ventricular Function)

서지정보

· 발행기관 : 대한심장학회
· 수록지 정보 : Korean Circulation Journal / 38권 / 7호 / 379 ~ 386페이지
· 저자명 : 이석인, 신미승, 이준승, 정욱진, 심은옥, 강웅철, 문찬일, 안태훈, 최인석, 신익균

초록

Background and Objectives: The speckle tracking method using 2-dimensional (2D) echocardiography is not
affected by the tethering of neighboring segments and angulation. Global circumferential strain (GCS) of the left
ventricle (LV) has been suggested as a systolic index and correlated with LV contractility. The purpose of this
study was to investigate whether acute changes in preload affect global circumferential strain and to evaluate the
usefulness of GCS by the speckle tracking method. Subjects and Methods: 2D echocardiography was performed
in 69 patients with end-stage renal disease before and after hemodialysis to measure the LV end-diastolic volume
and LV ejection fraction. 2D images were acquired from the short-axis view of the mid-LV for the evaluation of
GCS. Results: Mean LV end-diastolic volume significantly decreased from 91.2±33.3 mL to 72.3±32.0 mL (p<
0.05), and LV ejection fraction decreased from 63.6±13.1% to 60.0±11.2% (p=0.006) after hemodialysis.
However, mean GCS showed no significant change after hemodialysis (17.2±5.3% vs. 16.6±4.7%, p=0.13).
GCS was found to be well correlated with LV ejection fraction (r=0.54, p<0.05) and peak systolic mitral annular
velocity (r=0.46, p=0.000), but not with LV preload (r=0.06, p=0.622). Conclusion: GCS using the speckle
tracking method is a useful index for the evaluation of LV systolic function because it is not affected by acute
preload change and is correlated with LV ejection fraction and peak systolic mitral annular velocity.

영어초록

Background and Objectives: The speckle tracking method using 2-dimensional (2D) echocardiography is not
affected by the tethering of neighboring segments and angulation. Global circumferential strain (GCS) of the left
ventricle (LV) has been suggested as a systolic index and correlated with LV contractility. The purpose of this
study was to investigate whether acute changes in preload affect global circumferential strain and to evaluate the
usefulness of GCS by the speckle tracking method. Subjects and Methods: 2D echocardiography was performed
in 69 patients with end-stage renal disease before and after hemodialysis to measure the LV end-diastolic volume
and LV ejection fraction. 2D images were acquired from the short-axis view of the mid-LV for the evaluation of
GCS. Results: Mean LV end-diastolic volume significantly decreased from 91.2±33.3 mL to 72.3±32.0 mL (p<
0.05), and LV ejection fraction decreased from 63.6±13.1% to 60.0±11.2% (p=0.006) after hemodialysis.
However, mean GCS showed no significant change after hemodialysis (17.2±5.3% vs. 16.6±4.7%, p=0.13).
GCS was found to be well correlated with LV ejection fraction (r=0.54, p<0.05) and peak systolic mitral annular
velocity (r=0.46, p=0.000), but not with LV preload (r=0.06, p=0.622). Conclusion: GCS using the speckle
tracking method is a useful index for the evaluation of LV systolic function because it is not affected by acute
preload change and is correlated with LV ejection fraction and peak systolic mitral annular velocity.

참고자료

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