Changes in fetal hemodynamics with terbutaline treatment and premature labor

✍ Scribed by Dawod S. Sharif; James C. Huhta; Kenneth J. Moise Jr.; Robert W. Morrow; Grace Y. Yoon

• Book ID: 102888962
• Publisher: John Wiley and Sons
• Year: 1990
• Tongue: English
• Weight: 654 KB
• Volume: 18
• Category: Article
• ISSN: 0091-2751
• DOI: 10.1002/jcu.1870180204

✦ Synopsis

The aim of this study was to examine the fetal hemodynamic effects of terbutaline treatment and premature labor. Image-directed pulsed and continuous wave Doppler ultrasound studies, using 3.3-MHz and 5-MHz transducers (GE PAS11 and ATL echocardiographic machines), were used to assess fetal cardiac blood velocities in three groups of pregnancies matched for menstrual age (MA). Group 1: 13 normal pregnancies, mean MA 31 weeks. Group 2: 7 women in premature labor prior to tocolytic therapy, mean MA 32 weeks. Group 3: 8 women treated with terbutaline, average dose 18.8 mg daily, for previous premature labor, mean MA 31 weeks. Heart rate averaged 150 bpm, 135 bpm, and 127 bpm in the terbutaline, premature labor, and normal groups, respectively, and each were significantly different from each other. Products of time velocity interval and heart rate at the aortic valves were 1603