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Labor progress indices and dynamics of the individual uterine contraction during the active stage of labor
Author(s) -
Ophir Ella,
Bornstein Jacob,
Odeh Marwan,
Kaminsky Svetlana,
Shnaider Oleg,
Megel Yuri,
Barnea Ofer
Publication year - 2014
Publication title -
journal of obstetrics and gynaecology research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.597
H-Index - 50
eISSN - 1447-0756
pISSN - 1341-8076
DOI - 10.1111/jog.12218
Subject(s) - medicine , uterine contraction , contraction (grammar) , amplitude , cervical dilatation , oxytocin , gynecology , physics , optics , cervix , cancer , uterus
Aim To obtain and study new data on the dynamics of the labor process and to develop a contraction‐based index of labor progress. Methods This study was carried out at the D elivery R oom, D epartment of O bstetrics and G ynecology, W estern G alilee H ospital, N ahariya, I srael, using a new device ( B irth T rack). We continuously monitored cervical dilatation ( CD ) and head descent ( HD ) in 30 nulliparaous women during active labor with (augmented group) and without (study group) oxytocin augmentation. This led to the development and validation of progress indices based on features extracted from continuous monitoring. Results There were no significant differences between the average of each parameter in the study and augmented groups, except for HD velocity. Average HD velocity was faster in the study group. Linear regression analyses demonstrated that head station ( HS ) amplitude and T oco amplitude were the best parameters for predicting HD velocity in both groups. In the study group, average HD velocity was also significantly related to T oco rate and contraction efficiency. In the augmented group, only a weak correlation with T oco rate was seen, and no correlation with contraction efficiency. Conclusion With the assistance of the B irth T rack device, we can obtain continuous data on the labor process and indices to estimate the labor progress process without the use of vaginal (manual) examination.