Mathematical diagnosis of fetal monitoring tracing based on the S / k ratio of entropy.

Diagnóstico matemático del trazado de la monitoria fetal fundamentado en la relación S/k de la entropía.

Objective: the establishment of the interpretation of intrapartum fetal heart rate monitoring led to the creation of a diagnostic methodology based on probability and entropy law, which evaluates the tracing of fetal monitoring in an objective and reproducible way. The objective of the present study is to confirm the reproducibility and clinical applicability of this methodology to evaluate the tracing of normal and abnormal fetal monitoring in a physical-mathematical context. Materials and methods: there were taken 40 traces of fetal monitoring, divided into two groups, 15 of which were normal and 25 showed loss of fetal well-being. The frequency of occurrence of cardiac frequencies, presented in discrete time intervals, was calculated from the probability and S / k ratios of the entropy. Subsequently, the mathematical diagnosis was applied to make distinctions between normal fetal cardiac dynamics and pathological ones. Results: the values of the S/k ratios of the fetal monitoring evaluated, differentiated normal from abnormal fetal cardiac monitoring. Conclusions: with the established mathematical diagnosis, the reproducibility and clinical applicability of the methodology developed for the evaluation of the tracing of fetal monitoring were confirmed.