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Abstract To investigate the value of maternal-fetal complete Holter monitoring for predicting fetal distress before delivery. Methods: From January 2018 to October 2019, 106 pregnant women underwent prenatal examination were selected and were divided into group A 1 (50 women with high risk factor) and group A 2 (56 women with low risk factor), and also were divided into group B 1 (38 women with suspicious fetal distress r) and group B 2 (68 normal pregnant women). The Holter parameters before delivery period, such as basal fetal heart rate (BFHR), large acceleration (LA), short-term variation (STV), proportion of episodes of lowvariation (PELV), proportion of episodes of high variation (PEHV), acceleration capacity (AC), deceleration capacity (DC), and AC/DC were monitored and compared among these groups. Results: There were no significant different in the values of BFHR, LA, STV, PEHV, AC, DC, and AC/DC between group A1 and A2 (P>0.05), but PELV value of women in group A1 was significant higher than that of women in group A2 (P＜0.05). There were no significant different in the values of BFHR, AC, DC, and AC/DC between group B1 and B2 (P>0.05), and the values of LA, STV, and PEHV of women in group B1 were significant lower than those of women in group B2, but PELV value of women in group B1 was significant higher (P＜0.05). The sensibility and specificity of Holter parameter combined with neonatal umbilical arterial blood gas index for predicting the actual occurrence of neonatal asphyxia were 78.57% and 96.15%, respectively. Conclusion: Complete maternal-fetal Holter monitoring before delivery period has certain predictive value for fetal distress, but the relationship between Holter monitoring parameters and adverse pregnancy outcomes of women with high-risk pregnancy is not clear.
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