Vibroacoustic stimulation can pose risks.
Kisilevsky
B
B
D000161:Acoustic Stimulation / Q000009:adverse effects*; D001919:Bradycardia / Q000209:etiology*; D005260:Female; D005316:Fetal Distress / Q000209:etiology*; D006801:Humans; D011247:Pregnancy; D014732:Vibration / Q000009:adverse effects*