Artificial Intelligence-Assistant Cardiotocography: Unified Model for Signal Reconstruction, Fetal Heart Rate Analysis, and Variability Assessment
Summary
This paper presents an AI-based model for fetal heart rate monitoring that reconstructs signals, analyzes variability, and detects decelerations/accelerations with high sensitivity and specificity.
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# Artificial Intelligence-Assistant Cardiotocography: Unified Model for Signal Reconstruction, Fetal Heart Rate Analysis, and Variability Assessment Source: [https://arxiv.org/abs/2605.14242](https://arxiv.org/abs/2605.14242) [View PDF](https://arxiv.org/pdf/2605.14242) > Abstract:The monitoring of fetal heart rate \(FHR\) and the assessment of its variability are crucial for preventing fetal compromise and adverse outcomes\. However, traditional methods encounter limitations arising from equipment performance, data transmission, and subjective assessments by doctors\. We have developed a tailored AI\-based FHrCTG model specifically for FHR monitoring, which effectively mitigates noise interference and precisely reconstructs signals\. Our model was pre\-trained on a massive dataset consisting of 558,412 unlabeled data points and further refined using 7,266 expert\-reviewed entries\. To validate FHR, we introduced the Intersection Overlapping Labels \(IOL\) approach, which transforms rate analysis into categorical judgments\. Testing revealed that our model demonstrates high sensitivity and specificity in detecting critical FHR decelerations \(89\.13% and 87\.78%, respectively\) and accelerations \(62\.5% and 92\.04%, respectively\)\. Furthermore, based on Fischer's criteria for clinical application, our model achieved impressive AUC scores of 0\.7214 and 0\.9643 for verifying FHR periodicity and amplitude variation, respectively\. ## Submission history From: Xiaohua Wang \[[view email](https://arxiv.org/show-email/eb638448/2605.14242)\] **\[v1\]**Thu, 14 May 2026 01:18:41 UTC \(1,506 KB\)
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