The coalescence of oil drops in water is studied using acoustic levitation and stimulated with acoustic cavitation. Unlike most earlier studics, which investigate the coalescence of a single drop with an initially planar interface, the use of acoustic radiation forces allows two drops to be brought
Using fetal acoustic stimulation to shorten the biophysical profile
β Scribed by Michael G. Pinette; Jacquelyn Blackstone; Joseph R. Wax; Angelina Cartin
- Book ID
- 102333229
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 59 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0091-2751
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
Purpose
To determine whether fetal acoustic stimulation can decrease the time required to achieve a reassuring biophysical profile.
Methods
Patients scheduled for a biophysical profile were prospectively assigned to study and control groups. The study group received 3 seconds of acoustic stimulation if fetal breathing, tone, or movement were not present during the first 5 minutes of the study. The biophysical profile was completed in the standard fashion, for both groups.
Results
A total of 870 patients were enrolled (458 control, 412 with stimulation). The fetal acoustic stimulation group had decreased testing time (3 minutes) and fewer nonβreassuring tests (5%). The fetal acoustic stimulation group had fewer studies without breathing, potentially reducing the need for further testing or intervention.
Conclusions
Fetal acoustic stimulation can be used to decrease the biophysical profile testing time and to reduce the number of nonβreassuring tests. Β© 2005 Wiley Periodicals, Inc. J Clin Ultrasound 33:223β225, 2005
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