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Vibroacoustic stimulation evokes human fetal micturition
E Z Zimmer1, C R Chao, G P Guy
1Department of Obstetrics and Gynecology, Columbia University, New York, New York.
Obstetrics and Gynecology
|February 1, 1993
Summary
Vibroacoustic stimulation significantly reduced fetal bladder volume, indicating fetal voiding. This response may serve as a novel indicator of fetal stress during pregnancy.
Area of Science:
- Obstetrics and Gynecology
- Fetal Physiology
- Maternal-Fetal Medicine
Background:
- Fetal well-being assessment is crucial in high-risk pregnancies.
- Fetal voiding is a physiological process influenced by various stimuli.
- Non-invasive methods to assess fetal stress are continually being developed.
Purpose of the Study:
- To investigate the impact of vibroacoustic stimulation on fetal urination.
- To evaluate fetal voiding as a potential biomarker for fetal stress.
Main Methods:
- Ultrasound was used to measure fetal bladder volume before and after vibroacoustic stimulation.
- A control group received sham stimulation.
- Measurements were taken at 5 and 1 minutes pre-stimulation and 1 and 5 minutes post-stimulation.
Main Results:
- Vibroacoustic stimulation led to a statistically significant decrease in fetal bladder volume (P < .001).
- No significant change in bladder volume was observed in the sham stimulation group.
- Strong correlations were found between pre-stimulation and post-stimulation bladder volumes.
Conclusions:
- Vibroacoustic stimulation reliably induces fetal voiding.
- Fetal voiding in response to vibroacoustic stimulation may indicate a stress response.
- This finding opens avenues for using vibroacoustic stimulation as a tool to assess fetal stress.