Comparison of the acoustic stimulation test with nonstress test. A randomized, controlled clinical trial
The nonstress test (NST) is a helpful adjunct in the management of high-risk pregnancies. It has high predictability and a low false-negative rate but unfortunately has fairly high false-positive results. Attempts have been made to find a suitable stimulant to help decrease nonreactive results as we...
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| Main Authors: | , |
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| Format: | Clinical Trial |
| Language: | English |
| Published: |
2014
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| Online Access: | http://www.ncbi.nlm.nih.gov/pubmed/3502482 http://cmuir.cmu.ac.th/handle/6653943832/3508 |
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| Institution: | Chiang Mai University |
| Language: | English |
| Summary: | The nonstress test (NST) is a helpful adjunct in the management of high-risk pregnancies. It has high predictability and a low false-negative rate but unfortunately has fairly high false-positive results. Attempts have been made to find a suitable stimulant to help decrease nonreactive results as well as to shorten the duration of testing: the recently introduced fetal acoustic stimulation test (AST) may have such attributes. This prospective, randomized clinical trial was carried out to assess the new test. A total of 1,300 individual tests were performed on high-risk pregnancies. Cases were randomized to receive either the AST or NST. All tracings were interpreted blindly by an independent perinatologist. The incidence of nonreactive tests was 6.8% in the AST group and 13.8% in the NST group (P < .001). There was a significant reduction in the time needed for a reactive test to occur. It can be concluded, therefore, that AST offers a greater advantage over NST by lowering both the incidence of nonreactive tests and testing time, thereby resulting in less of a need for the contraction stress test and biophysical profile. |
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