摘要
Objective This study was undertaken to determine the effect of advanc ed ultras ound equipment on the ability to visualize fetal cardiac structures in obese gra vid women. Study design Singleton pregnancies undergoing initial ultrasound exam ination between 14 weeks and 23 weeks 6 days were included. Patients were classi fied by body mass index (BMI) (nonobese <BMI < 30 kg/m2] and obese <BMI ≥30 kg/ m2]). The rate of suboptimal ultrasound visualization (SUV) of the fetal heart ( cardiac axis, cardiac position, 4-chamber, and outflow tracts views) was compar ed between patients examined by standard (HDI 3000) or advanced ultrasound equip ment (HDI 5000)-(ATL, Philips Medical Systems, Bothell, Wash). Results Over a 5 -year period, 7029 singleton gestations met inclusion criteria; 2498 (35.5%) w ere clinically obese. There was no difference in gestational age, rate of low am niotic fluid volume, anterior placenta, or vertex fetal presentation between the groups. When the advanced ultrasound equipment was used, SUV of the fetal heart was lower in the nonobese population (20.8%vs 16.4%; P< .001), but not in the obese gravid women (38.1%vs 35.5%; P=.27). However, obese patients who were e xamined by advanced ultrasound equipment after 18 weeks had less SUV of the outf low tracts (28.5%vs 23.1%, P=.04) but not of the 4-chamber view. Conclusion D espite advanced ultrasound equipment,maternal obesity significantly limits visua lization of the fetal heart. However, the advanced ultrasound equipment may some what benefit obese gravid women examined after 18 weeksgestation.
Objective This study was undertaken to determine the effect of advanc ed ultras ound equipment on the ability to visualize fetal cardiac structures in obese gra vid women. Study design Singleton pregnancies undergoing initial ultrasound exam ination between 14 weeks and 23 weeks 6 days were included. Patients were classi fied by body mass index (BMI) (nonobese <BMI < 30 kg/m2] and obese <BMI ≥30 kg/ m2]). The rate of suboptimal ultrasound visualization (SUV) of the fetal heart ( cardiac axis, cardiac position, 4-chamber, and outflow tracts views) was compar ed between patients examined by standard (HDI 3000) or advanced ultrasound equip ment (HDI 5000)-(ATL, Philips Medical Systems, Bothell, Wash). Results Over a 5 -year period, 7029 singleton gestations met inclusion criteria; 2498 (35.5%) w ere clinically obese. There was no difference in gestational age, rate of low am niotic fluid volume, anterior placenta, or vertex fetal presentation between the groups. When the advanced ultrasound equipment was used, SUV of the fetal heart was lower in the nonobese population (20.8%vs 16.4%; P< .001), but not in the obese gravid women (38.1%vs 35.5%; P=.27). However, obese patients who were e xamined by advanced ultrasound equipment after 18 weeks had less SUV of the outf low tracts (28.5%vs 23.1%, P=.04) but not of the 4-chamber view. Conclusion D espite advanced ultrasound equipment,maternal obesity significantly limits visua lization of the fetal heart. However, the advanced ultrasound equipment may some what benefit obese gravid women examined after 18 weeksgestation.
