本文選題：超聲心動(dòng)描記術(shù)　切入點(diǎn)：周向應(yīng)變　出處：《中國介入影像與治療學(xué)》2016年08期

【摘要】：目的探討正常兒童左心室局部心肌收縮期周向峰值應(yīng)變(SC)及應(yīng)變率(SrC)與年齡、心率的關(guān)系。方法收集164名正常兒童胸骨旁左心室短軸基底段、中間段及心尖水平二維動(dòng)態(tài)圖像,采用GE EchoPAC工作站分析,并獲得左心室18節(jié)段SC及SrC值,將其與年齡和心率進(jìn)行回歸分析。結(jié)果兒童18個(gè)節(jié)段的周向應(yīng)變及應(yīng)變率曲線形態(tài)基本一致�；锥�、中間段和心尖段的前間隔、后間隔、下壁SC較高,側(cè)壁與后壁較低。基底段、中間段和心尖段不同部位SrC差異有統(tǒng)計(jì)學(xué)意義(P均0.05)。除基底段和中間段的前間隔、前壁、后間隔和心尖段的后間隔以外,其余節(jié)段與年齡存在相關(guān)性;除前間隔所有節(jié)段、前壁中間段及心尖段、后間隔心尖段外,其余節(jié)段SC與心率有相關(guān)性;而中間段下壁SC與心率和年齡均有相關(guān)性(R~2=0.169,P=0.032)�；锥魏椭虚g段的后壁及下壁、中間段的側(cè)壁、心尖段的前間隔、前壁、側(cè)壁、后壁、下壁和后間隔SrC與年齡無相關(guān)性,其余節(jié)段與年齡存在相關(guān)性�；锥蔚暮蟊�、心尖段的前壁、側(cè)壁、后壁SrC與心率無相關(guān)性,其余節(jié)段SrC均與心率有相關(guān)性(P均0.05)。心尖段的前間隔SrC與心率和年齡均有相關(guān)性(R~2=0.053,P=0.044)。結(jié)論正常兒童局部心肌SC及SrC存在節(jié)段間的差異,且與心率和(或)年齡存在相關(guān)性。采用斑點(diǎn)追蹤成像技術(shù)評價(jià)兒童左心室局部心肌SC及SrC時(shí)需考慮年齡、心率因素。
[Abstract]:Objective to investigate the relationship between age and heart rate in left ventricular regional systolic peak strain (SCC) and strain rate (SRC) in normal children. Methods two dimensional dynamic images of left ventricular short axis basal segment, middle segment and apical level were collected from 164 normal children. The values of SC and SrC in 18 segments of left ventricle were analyzed by GE EchoPAC workstation. The values of SC and SrC were analyzed by regression analysis with age and heart rate. Results the shape of circumferential strain and strain rate curves of 18 segments of children was basically the same as that of basal segment. The anterior septum, posterior septum, inferior wall SC were higher in middle segment and apical segment, but lower in lateral wall and posterior wall. There were significant differences in SrC between basal segment, middle segment and apical segment (P < 0.05), except for anterior septum and anterior wall of basal segment and middle segment. In addition to posterior septum and apical segment, the other segments were correlated with age, except all segments of anterior septum, middle segment of anterior wall, apical segment of anterior wall, apical segment of posterior septum, and other segments of SC were correlated with heart rate. There was no correlation between SrC of basal and middle segments, lateral wall of middle segment, anterior septum of apical segment, anterior wall, lateral wall, posterior wall, inferior wall and posterior septum. There was no correlation between SrC and heart rate in the posterior wall of basal segment, anterior wall of apical segment, lateral wall, posterior wall, and posterior wall. The other segments of SrC were correlated with heart rate (P < 0.05), and the anterior septal SrC of the apical segment was correlated with heart rate and age. Conclusion there is a significant difference between SC and SrC in the local myocardium of normal children. The age and heart rate factors should be taken into account in the evaluation of left ventricular regional myocardial SC and SrC by dot-tracing imaging.
【作者單位】： 昆明醫(yī)科大學(xué)第一附屬醫(yī)院超聲科云南省超聲診斷質(zhì)量控制中心云南省超聲影像研究中心;華中科技大學(xué)同濟(jì)醫(yī)學(xué)院附屬協(xié)和醫(yī)院超聲影像科;
【分類號(hào)】：R540.45;R179

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