Fetal Vibroacoustic Stimulation in Computerized Cardiotocographic Analysis: The Role of Short-Term Variability and Approximate Entropy

Table 3

FHR parameters before and after VAS in low-risk pregnancies (𝑛=95).

	Before VAS	After VAS	P*
FHR	137.14	137.33	N.S.
FM	36	72	0.001
N° ACC	2.2	8.6	0.001
DEC	0.01	0.11	N.S.
STV	4.75	5.28	N.S.
ApEn	1.35	1.31	N.S.

Data are expressed as mean.
FHR, fetal heart rate; FM, fetal movements; ACC, accelerations; DEC, deceleration; STV, short-term variability; ApEn, approximate entropy; NS, not significant.
*Student’s t-test, *according to the standard values proposed by Arduini.