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

Table 1

Patients’ characteristics.

	Number	%
Gestational age at CTG recording (week):
28–36 weeks; 37–42 weeks	87; 129	40.27; 59.72
High-risk pregnancy	121	56
Low-risk pregnancy	95	44
Abnormal Doppler velocimetry on umbilical cord	10	4.63
Abnormal AFI, 𝑛 (%):
<5 cm	6	2.8
>25 cm	4	1.8

CTG, cardiotocogram; AFI, amniotic flux index.