PREDICTION OF POWERLESS LABOR, BY USING CARDIOINTERVALOGRAPHY

Objective. To estimate the sensitivity and specificity of the authors’ method to predict powerless labor (PL) in pregnant women before labor and/or in the latent phase of its first period, by using cardiointervalography (CIG). Subjects and methods. A Neuron-Spectrum diagnostic system (Neurosoft, Ivanovo) was employed to make CIG and to estimate heart rate variability (HRV) in 302 women 1—5 days before term labor and in the latent phase of its first period. To analyze the results of the study retrospectively, all the women were divided into 2 groups. Group 1 consisted of 242 women, whose delivery was uncomplicated; Group 2 included 60 women whose delivery was complicated by PL. Results. A method was proposed to predict PL in pregnant women before labor and/or in the latent phase of its first period, which was based on the score rating of 11 indices, including 8 indicators characterizing HRV, as evidenced by CIG. The sensitivity of this method used before labor or in the latent phase of its first period was 96 and 96%, and its specificity was 98 and 97%, respectively. Conclusion. The proposed method shows promise for use as it permits the timely prevention of PL in high-risk women.

powerless labor, cardiointervalography