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目的探讨缩窄性心包炎患者组织应变成像的特征及其诊断价值。方法对26例缩窄性心包炎患者、30例对照者,在心尖四腔观组织多普勒图上同步定量显示室间隔和左室侧壁的中段应变曲线图,测量收缩期最大应变值。计算室间隔与左室侧壁最大应变量的绝对值及应变比值。结果缩窄性心包炎患者左室侧壁应变明显小于室间隔[(-5.60±3.46)%对(-14.14±4.11)%,P<0.05];应变差绝对值及比值明显高于对照组[差值(16.40±5.05)%对(3.26±1.95)%,比值5.97±5.67对1.12±0.37,P<0.05]。结论缩窄性心包炎患者应变曲线特征明显,直观易辨,有重要的诊断价值。
Objective To investigate the characteristics of tissue strain imaging in patients with constrictive pericarditis and its diagnostic value. Methods Twenty-six patients with constrictive pericarditis and 30 healthy controls were enrolled in this study. The midstage strain curves of the interventricular septum and the left ventricular wall were simultaneously quantified on the apical four-chamber tissue Doppler and the maximum systolic strain was measured. Calculate the absolute value and strain ratio of ventricular septum and left ventricular wall maximum strain. Results The strain of left ventricular wall in patients with constrictive pericarditis was significantly lower than that in the septum [(-5.60 ± 3.46)% vs (-14.14 ± 4.11)%, P <0.05] The difference was (16.40 ± 5.05)% vs (3.26 ± 1.95)%, the ratio was 5.97 ± 5.67 vs 1.12 ± 0.37, P <0.05]. Conclusion The characteristics of strain curve in patients with constrictive pericarditis are obvious, intuitive and distinguishable, and have important diagnostic value.