Document Type : Research Article
Authors
- Tahereh Keshavarz 1
- Marzieh Akbarzadeh 2
- Zeinab Moshfeghy 1
- Roghaie Khoshkholgh 3
- Maram Kasraeian 4
- Najaf Zare 5
1 Department of Midwifery, Community Based Psychiatric Care Research Center, School of Nursing and Midwifery, Shiraz University of Medical Sciences, Shiraz, IR Iran
2 Maternal-Fetal Medicine Research Center, Department of Midwifery, School of Nursing and Midwifery, Shiraz University of Medical Sciences, Shiraz, IR Iran
3 Department of Midwifery, Firoozabad Branch, Islamic Azad University, Firoozabad, Iran
4 Department of Obstetrics and Gynecology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, IR Iran
5 Department of Biostatistics, School of Medicine, Infertility Research Center, Shiraz University of Medical Sciences, Shiraz, IR Iran
Abstract
Background: Non-stress test is the most widely used test to assess fetal status. The presence of beat-to-beat variability is reassuring while its absence is not reassuring.
Methods: In this single-blind clinical trial, 213 pregnant women with gestational age of 37 - 41 weeks were randomly allocated into three groups (auditory intervention for mother, auditory intervention for fetus, and control), each containing 71 subjects. The data were analyzed using one-way ANOVA followed by Tukey HSD test and Kruskal-Wallis test. In addition, paired t-test was used to compare each group before and after the intervention.
Results: The results showed a significant difference among the three groups regarding beat-to-beat variability of fetal heart rate in the second 10 minutes of the test (P = 0.006). Besides, the results of Tukey HSD test indicated that this difference was significant between the control group and auditory intervention for mother group (P = 0.004). Moreover, the results of t-test showed a significant difference in beat-to-beat variability of fetal heart rate between the first and the second 10 minutes of the test in both groups of auditory intervention for mother (P < 0.001) and for fetus (P < 0.001).
Conclusions: Since beat-to-beat variability of the fetal heart rate is indicator of fetal health, music intervention can be used to increase the number of accelerations and reduce false positive results in NST.
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