RESUMEN
Objective To study the estimated value on normal reference ranges of inferior vena cava (IVC) Doppler indices from gestation 16 to 40 weeks of fetus with color ultrasound.Methods Seven hundred and forty-four single birth gravida with gestation 16 to 40 weeks were grouped according to the gestational weeks with 27-35 cases each.The IVC Doppler indices were measured by color ultrasound,including preload index,peak velocity index and pulsatile index.Results All IVC Doppler indices rapidly declined from gestation 16 to 24 weeks,and they were relatively constant or slightly decreased throughout the end of pregnancy.Conclusions To set up the normal reference ranges of IVC Doppler indices for gestation from 16 to 40 weeks means a lot for every pregnant.This normative data may be a useful noninvasive tool for evaluation of fetal cardiac function.
RESUMEN
Objective To study the diagnostic value of prenatal ultrasound in fetal cardiovascular malformations.Methods 4 152 cases of pregnant women received prenatal ultrasound were slected in the study.The accuracy of prenatal ultrasound diagnosis was confirmed by follow-up.Results In 4 152 cases of pregnant women,24 cases of fetal cardiovascular malformations were detected,incidence rate of 5.78 per thousand,the follow-up confirmed 19 cases,3 cases refused an autopsy,2 cases were lost.The diagnostic accuracy reached 79.17％.Conclusion Prenatal ultrasound for diagnosis fetal cardiovascular malformations has high diagnostic accuracy,which may achieve clinical early diagnosis and early intervention,help control birth defects.
RESUMEN
Objective To evaluate the increased carotid artery pulsatility index(PI) and resistance index (RI) in young obese males by Doppler ultrasound.Methods All of the volunteers without local and systemic disease included 48 young obese males (observation group) and 100 healthy males with the same age(control group).Common carotid artery had to come into practice in all of the volunteer by pulsed Doppler ultrasound to calculate the PI and R[.Results The average of RI,PI,body mass index (BMI),systolic pressure,diastolic pressure,fasting plasma insulin,fasting C-peptide,triglyceride,low density lipoprotein cholesterol and high sensitivity C reactive protein in observation group were significantly higher than those in control group [0.70 ± 0.10 vs.0.60 + 0.10,1.48±0.30 vs.1.00 ± 0.10,(36.6 ± 3.4) kg/m2 vs.(23.6 ± 1.6) kg/m2,(127.5 ± 14.3) mm Hg(1 mm Hg =0.133 kPa) vs.(110.5 ± 11.0) mm Hg,(78.8 ±9.8) mm Hgvs.(69.9 ±7.6) mm Hg,(27.5 ± 19.6) mU/L vs.(8.8 +8.8) mU/L,(3.7 ± 1.6) pmol/L vs.(1.8 ± 1.2)pmol/L,(3.9 ± 2.0) mmol/L vs.(2.1 ± 1.3) mmol/L,(3.1 ± 0.7) mmol/L vs.(2.3 ± 0.7) mmol/L,(4.0 ± 4.4)mg/L vs.(1.3 ± 1.2) mg/L,P ＜ 0.05].Conclusions The characteristic of vascular properties in young obese males with normal blood pressure and without other cardiac risk factor is the decrease of blood wall compliance and the increase of resistance.The change of artery in the incipient properties in young obese males is the vascular function.Further studies will be required to prove thai whether early intervention will improve vascular function such as diet and practice.