Yilmaz Mustafa, Erol Mustafa Kemal, Acikel Mahmut, Sevimli Serdar, Alp Necip
Department of Cardiology, Medical School Hospital, Ataturk University, 25050 Erzurum, Turkey.
Heart Vessels. 2003 Jul;18(3):112-6. doi: 10.1007/s00380-003-0703-2.
This study was planned to assess whether tissue Doppler imaging is a useful method for the detection of the right ventricular myocardial infarction. Forty-eight patients with acute inferior myocardial infarction and 24 age- and sex-matched healthy controls were included in this study. Twenty-four patients had electrocardiographic signs of inferior myocardial infarction without right ventricular infarction (group I), and the other 24 patients had electrocardiographic signs of inferior myocardial infarction with right ventricular infarction (group II). From the echocardiographic apical four-chamber view, peak systolic, early diastolic, and late diastolic velocities of the tricuspid annulus at the right ventricular free wall were recorded with the use of pulsed-wave Doppler tissue imaging. The tricuspid annular peak tissue Doppler imaging systolic velocity was significantly lower in group I (14.03 +/- 2.57 cm/s, P << 0.005) and in group II (8.50 +/- 0.84 cm/s, P << 0.005) than in controls (16.63 +/- 2.31 cm/s). The tricuspid annular peak systolic (8.50 +/- 0.84 cm/s vs 16.63 +/- 2.31 cm/s) and peak early diastolic (10.99 +/- 3.28 cm/s vs 19.39 +/- 4.3 cm/s) velocities were significantly lower in group II than in group I, as compared with controls ( P << 0.001). Peak early diastolic velocity of tricuspid annulus (10.99 +/- 3.28 cm/s vs 19.39 +/- 4.3 cm/s) was significantly lower in group I than in controls ( P << 0.001); however, late diastolic velocity was significantly lower in group II (15.98 +/- 5.08 cm/s, P << 0.05) than in group I (18.21 +/- 2.63 cm/s, P << 0.05) and in controls (19.02 +/- 5.29 cm/s). The results of this study indicate that tricuspid annular peak systolic and early diastolic velocities are reduced in patients with right ventricular infarction. The velocity of the tricuspid annulus by tissue Doppler imaging is simple and can be used to distinguish whether patients with inferior myocardial infarction have right ventricular infarction.
本研究旨在评估组织多普勒成像是否是检测右心室心肌梗死的有效方法。本研究纳入了48例急性下壁心肌梗死患者和24例年龄及性别匹配的健康对照者。24例患者有下壁心肌梗死的心电图表现但无右心室梗死（I组），另外24例患者有下壁心肌梗死合并右心室梗死的心电图表现（II组）。从超声心动图心尖四腔观，使用脉冲波多普勒组织成像记录右心室游离壁三尖瓣环的收缩期峰值、舒张早期和舒张晚期速度。I组（14.03±2.57 cm/s，P<<0.005）和II组（8.50±0.84 cm/s，P<<0.005）的三尖瓣环组织多普勒成像收缩期峰值速度显著低于对照组（16.63±2.31 cm/s）。与对照组相比，II组的三尖瓣环收缩期峰值（8.50±0.84 cm/s对16.63±2.31 cm/s）和舒张早期峰值（10.99±3.28 cm/s对19.39±4.3 cm/s）速度显著低于I组（P<<0.001）。I组三尖瓣环舒张早期峰值速度（10.99±3.28 cm/s对19.39±4.3 cm/s）显著低于对照组（P<<0.001）；然而，II组舒张晚期速度（15.98±5.08 cm/s，P<<0.05）显著低于I组（18.21±2.63 cm/s，P<<0.05）和对照组（19.02±5.29 cm/s）。本研究结果表明，右心室梗死患者的三尖瓣环收缩期峰值和舒张早期速度降低。组织多普勒成像测量的三尖瓣环速度方法简单，可用于鉴别下壁心肌梗死患者是否合并右心室梗死。
