Fourier Evaluation of Tracings and Acidosis in Labor (FETAL) Framework: An In-Silico Evaluation of a Spectral-Divergence Method

Description

Jacques Balayla proposes in 2026 a new way to read fetal heart tracings during labour, testing the idea in simulation before any patient data are touched. Standard tracing review suffers from poor reader agreement and weak specificity for fetal oxygen failure. His framework, named FETAL, compares the frequency spectrum of a heart-rate signal, meaning how its rhythm energy distributes across speeds, against a reference template built from normal-like signals. The score is the distance between spectra.

Twelve rounds covered five scenarios, from no true difference through weak, moderate, and strong spectral shifts, plus a moderate shift corrupted by artefacts such as signal gaps and maternal heart-rate contamination. The spectral score stayed at chance where no difference existed and rose steadily with shift strength. It dipped under artefact stress, while two standard summary measures stayed near chance throughout. Validation against cord blood gases is the decisive next step.

Catalog record

Source: https://europepmc.org/article/MED/PMC13500080