为确定早产儿正常左室静息收缩状况,研究收缩末室壁应力和按心率校正的环行纤维缩短速率(VCF)的相关性。对象为孕龄28～36周的11(男3、女8)例早产儿,均无心血管疾病。每例在出生后7～14天和29～39天各作二维超声加彩色多普勒检查一次。在第一次检查和第二次检查中室壁应力和VCF均呈显著负相关(r=-0.616,r=-0.715), To determine the normal left ventricular resting systolic condition in preterm infants, the correlation between end-systolic wall stress and heart rate-corrected circumferential fiber velocity (VCF) was studied. Subjects were 11 (3 males and 8 females) preterm infants 28 to 36 weeks gestation, with no cardiovascular disease. Each case was 7 to 14 days after birth and 29 to 39 days for each two-dimensional ultrasound plus color Doppler examination. There was a significant negative correlation between wall stress and VCF in the first and second examinations (r = -0.616, r = -0.715)