CAJ | 학술논문

目的建立正常胎儿心脏大小超声参数的Z评分模型.方法对孕14～40周的胎儿进行超声心动图检查,在标准四腔心观测量心脏外形参数心脏横径(HD)、长径(HL)、周长(HC)和面积(HA)作为因变量,以胎体大小参数孕周(GA)、双顶径(BPD)和股骨长径(FL)为自变量,统计分析心脏参数均数和标准差的最佳拟合方程.再应用已建立的Z评分模型对一组胎儿心脏疾病进行评估.结果胎儿心脏外形大小与胎体大小参数明显相关.心脏参数的均数相对胎体大小参数的最佳拟合方程为线性或2次方程或3次方程;标准差的最佳拟合方程则为线性或2次方程.与胎体大小相关程度最高的心脏参数为HD(r=0.984～0.986),其次为HL(r =0.981～0.984)、HC(r=0.981～0.982)和HA(r=0.978～0.979).病例组中4例Ebstein's畸形和16例重型α地中海贫血胎儿心脏Z评分均不同程度增高.结论胎儿心脏大小Z评分的计算简单易行,具有潜在的临床应用价值,尤其在重型α-地中海贫血中可以作为一个新的预测指标.
목적 건립정상태인심장대소초성삼수적Z평분모형.방법 대잉14～40주적태인진행초성심동도검사,재표준사강심관측량심장외형삼수심장횡경(HD)、장경(HL)、주장(HC)화면적(HA)작위인변량,이태체대소삼수잉주(GA)、쌍정경(BPD)화고골장경(FL)위자변량,통계분석심장삼수균수화표준차적최가의합방정.재응용이건립적Z평분모형대일조태인심장질병진행평고.결과 태인심장외형대소여태체대소삼수명현상관.심장삼수적균수상대태체대소삼수적최가의합방정위선성혹2차방정혹3차방정;표준차적최가의합방정칙위선성혹2차방정.여태체대소상관정도최고적심장삼수위HD(r=0.984～0.986),기차위HL(r =0.981～0.984)、HC(r=0.981～0.982)화HA(r=0.978～0.979).병례조중4례Ebstein's기형화16례중형α지중해빈혈태인심장Z평분균불동정도증고.결론 태인심장대소Z평분적계산간단역행,구유잠재적림상응용개치,우기재중형α-지중해빈혈중가이작위일개신적예측지표.
Objective To construct Z-score models for normal fetal heart size measurements derived from fetal echocardiography.Methods Fetal echocardiography were performed in 910 normal singleton fetuses from 14th to 40th gestational weeks.Fetal transverse heart diameter (HD),heart length (HL),heart circumference (HC) and heart area (HA) were derived from a standard four-chamber view during end diastole.Using fetal somatic sizes as independent variables and heart sizes as dependent variables,the regression analyses of the mean (M) and the standard deviation (SD) for each parameter were calculated separately.A group of fetal heart diseases were assessed using these models.Results Strong correlations were found between fetal heart sizes and somatic sizes.Linear-cubic regression equations were each fitted to the models of the means of the heart sizes,whereas linear-quadratic equations were fitted to the models of the SDs.HD (r =0.984-0.986) was a dependent variable that provided the highest correlation coefficient with all of the fetal sizes,followed by HL (r =0.981-0.984),HC (r =0.981-0.982) and HA (r =0.978-0.979).All fetuses with Ebstein' s anomaly and most with homozygous α thalassemia-1 demonstrated Z scores reflective of increased heart sizes.Conclusions The fetal heart sizes Z-scores models had been constructed.The calculation of Z-scores for heart sizes as a function of fetal somatic size is feasible and simple.They might be useful for quantitative assessment of some cardiac diseases and used as new predictive indicators for homozygous α-thalassemia-1 particularly.