重型地中海贫血患者的脉冲和组织多普勒超声心动图变化

IF 3 Q2 Medicine
Taysir Garadah, S. Kassab, Najat Mahdi, Ahmed A. Abu-Taleb, A. Jamsheer
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Results Compared with control patients, M-Mode showed that patients with β-TM have thicker LV septal wall index (0.659 ± 0.23 vs. 0.446 ± 0.219 cm, P ≤ 0.001), posterior wall index (0.659 ± 0.235 vs. 0.437 ± 0.214 cm, P ≤ 0.01), and larger LVEDD index is (3.99 ± 0.48 vs. 2.170 ± 0.57 mm. P = 0.035). Pulsed Doppler showed high LV trans-mitral E wave velocity (70.818 ± 10.139 vs. 57.532 ± 10.139, p = 0.027) and E/A ratio (1.54 vs. 1.23, P ≤ 0.01). The duration of Deceleration time (DT) and isovolumic relaxation time (IVRT) were significantly shorter in patients with β-TM (150.234 ± 20.0.23 vs. 167.123 ± 19.143 msec, P ≤ 0.01) and (60.647 ± 6.77 vs. 75.474 ± 5.83 msec, P ≤ 0.001), respectively. The ratio of transmitral E wave velocity to the tissue Doppler E wave at the basal septal mitral annulus E/Em– was significantly higher in β-TM group (14.024 ± 2.29 vs. 12.132 ± 1.82, P ≤ 0.01). The Tissue Doppler systolic velocity (Sm) and the early diastolic velocity (Em) were significantly lower in β-TM group compared to control (4.31 ± 1.2 cm/s vs. 6.95 ± 2.1, P ≤ 0.01 and 4.31 ± 2.7 cm/s vs. 5.82 ± 2.5, P ≤ 0.01) respectively. The tricuspid valve velocity was significantly higher than controls (2.993 ± 0.569 vs. 1.93 ± 0.471 m/sec, respectively, P ≤ 0.01). However, the LVEF% and fractional shortening were normal with no significant difference in both groups. Conclusion In this study, patients with β-thalassemia major compared with controls, have significantly thicker LV wall, and larger LV cavity and LV diastolic filling indices suggestive of restrictive pattern with a higher tricuspid valve velocity. 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引用次数: 16

摘要

背景β-地中海贫血(β-TM)患者左心室(LV)收缩和舒张功能的多普勒超声心动图研究显示不同类型的收缩和舒张功能障碍。目的应用脉冲多普勒(PD)和组织多普勒(TD)超声心动图研究β-TM患者左室收缩和舒张功能。方法选取β-TM患者(n = 38,年龄15.7±8.9岁)与年龄匹配的对照组(n = 38,年龄15.9±8.9岁)进行临床及超声心动图评价。脉搏多普勒指数按年龄和心率归一化。结果与对照组相比,M-Mode显示β-TM患者左室间隔壁指数(0.659±0.23 vs 0.446±0.219 cm, P≤0.001)较厚,后壁指数(0.659±0.235 vs 0.437±0.214 cm, P≤0.01)较大,LVEDD指数为(3.99±0.48 vs 2.170±0.57 mm)。P = 0.035)。脉冲多普勒显示左室经二尖瓣E波速度高(70.818±10.139比57.532±10.139,p = 0.027), E/A比高(1.54比1.23,p≤0.01)。β-TM患者的减速时间(DT)和等容松弛时间(IVRT)均显著缩短(150.234±20.0.23∶167.123±19.143 msec, P≤0.01)和(60.647±6.77∶75.474±5.83 msec, P≤0.001)。β-TM组基底隔二尖瓣环透射E波速度与组织多普勒E波速度之比(14.024±2.29∶12.132±1.82,P≤0.01)显著高于β-TM组。β-TM组组织多普勒收缩速度(Sm)和早期舒张速度(Em)明显低于对照组(4.31±1.2 cm/s比6.95±2.1,P≤0.01)和4.31±2.7 cm/s比5.82±2.5,P≤0.01)。三尖瓣速度显著高于对照组(分别为2.993±0.569和1.93±0.471 m/sec, P≤0.01)。然而,LVEF%和分数缩短正常,两组无显著差异。结论与对照组相比,β-地中海贫血患者左室壁明显增厚,左室腔和左室舒张充盈指数明显增大,三尖瓣瓣速增高,提示限制性型。这些数据表明,β-地中海贫血患者左心室舒张指数最初受损。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Pulsed and Tissue Doppler Echocardiographic Changes in Patients with Thalassemia Major
Background Doppler echocardiographic studies of left ventricle (LV) systolic and diastolic function in patients with β-Thalassemia Major (β-TM) had shown different patterns of systolic and diastolic dysfunction. Aim This cross-sectional study was designed to study the LV systolic and diastolic function in patients with β-TM using Pulsed Doppler (PD) and Tissue Doppler (TD) echocardiography. Methods All patients were evaluated clinically and by echocardiography, The study included patients with β-TM (n = 38, age 15.7 ± 8.9 years) compared with an age-matched control group (n = 38, age 15.9 ± 8.9 years). The pulse Doppler indices were normalized for age and heart rate. Results Compared with control patients, M-Mode showed that patients with β-TM have thicker LV septal wall index (0.659 ± 0.23 vs. 0.446 ± 0.219 cm, P ≤ 0.001), posterior wall index (0.659 ± 0.235 vs. 0.437 ± 0.214 cm, P ≤ 0.01), and larger LVEDD index is (3.99 ± 0.48 vs. 2.170 ± 0.57 mm. P = 0.035). Pulsed Doppler showed high LV trans-mitral E wave velocity (70.818 ± 10.139 vs. 57.532 ± 10.139, p = 0.027) and E/A ratio (1.54 vs. 1.23, P ≤ 0.01). The duration of Deceleration time (DT) and isovolumic relaxation time (IVRT) were significantly shorter in patients with β-TM (150.234 ± 20.0.23 vs. 167.123 ± 19.143 msec, P ≤ 0.01) and (60.647 ± 6.77 vs. 75.474 ± 5.83 msec, P ≤ 0.001), respectively. The ratio of transmitral E wave velocity to the tissue Doppler E wave at the basal septal mitral annulus E/Em– was significantly higher in β-TM group (14.024 ± 2.29 vs. 12.132 ± 1.82, P ≤ 0.01). The Tissue Doppler systolic velocity (Sm) and the early diastolic velocity (Em) were significantly lower in β-TM group compared to control (4.31 ± 1.2 cm/s vs. 6.95 ± 2.1, P ≤ 0.01 and 4.31 ± 2.7 cm/s vs. 5.82 ± 2.5, P ≤ 0.01) respectively. The tricuspid valve velocity was significantly higher than controls (2.993 ± 0.569 vs. 1.93 ± 0.471 m/sec, respectively, P ≤ 0.01). However, the LVEF% and fractional shortening were normal with no significant difference in both groups. Conclusion In this study, patients with β-thalassemia major compared with controls, have significantly thicker LV wall, and larger LV cavity and LV diastolic filling indices suggestive of restrictive pattern with a higher tricuspid valve velocity. These data showed that left ventricle diastolic indices are compromised initially in patients with β-thalassemia major.
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CiteScore
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