Abstract：Objective: To evaluate the longitudinal contractile function, synchrony and location of papillary muscle in patients with hypertrophic cardiomyopathy(HCM) with two-dimensional speckle tracking echocardiography(2D-STE). Methods: Thirty-four patients diagnosed with HCM by transthoracic echocardiography and thirty-four healthy people at the same period were collected. 2D-STE was used to evaluate the longitudinal strain of papillary muscle. The time difference between the time from the starting point of QRS to the peak strain of the two papillary muscles and the circumference angle of papillary muscle, the differences of various parameters between the two groups were compared. Results: The circumferential angle of the two papillary muscles and the area of the anterior lateral papillary muscle were significantly higher in the HCM group than in the control group(P<0.05). The segments of the papillary muscles and the overall longitudinal strain of HCM patients were lower than those of the normal control group(P<0.05). The difference in strain peak time between the two papillary muscles in the HCM group was significantly greater than that in the control group, and the difference was statistically significant(P<0.05). Conclusion: In HCM patients, the papillary muscles move forward, the longitudinal contraction function of the papillary muscles is reduced, and the contraction of the two papillary muscles is not synchronized. Papillary muscle function can be fully evaluated using 2D-STE.
白若岑，郭 洁，孙丹丹，杨 军. 应用二维斑点追踪技术评价肥厚型心肌病患者乳头肌功能[J]. 中国临床医学影像杂志, 2020, 31(3): 200-203.
BAI Ruo-cen, GUO Jie, SUN Dan-dan, YANG Jun. Two-dimensional speckle tracking technology in evaluation of papillary muscle function in
patients with hypertrophic cardiomyopathy. JOURNAL OF CHINA MEDICAL IMAGING, 2020, 31(3): 200-203.
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