Obstech - Tele-CTG: Conceção e prototipagem dum serviço de telemedicina em obstetrícia¶
0. Abstract¶
The Obstech – Tele-CTG project aims to conceive and prototype an innovative telemedicine service in the field of obstetrics, focused on remote cardiotocography (CTG) monitoring during pregnancy. Cardiotocography is an essential clinical exam that simultaneously records fetal heart rate and uterine activity, traditionally performed in hospital settings.
This project proposes a hybrid model composed of a portable signal acquisition device and an integrated digital platform with two distinct interfaces: one designed for the pregnant woman (patient-facing) and another for healthcare professionals (clinical-facing). The approach is centered on user interviews and functional mockup development to validate the system's utility and feasibility.
The solution addresses a clear gap in the current market, where existing solutions are either highly reliable but hospital-bound, or accessible but lacking clinical integration and intelligent data analysis. Obstech bridges these two extremes by combining clinical-grade CTG monitoring with a patient-centered digital experience.
Keywords: Telemedicine, Obstetrics, Cardiotocography, Remote Monitoring, eHealth, Prototyping
1. Introduction¶
1.1 What is Obstech – Tele-CTG?¶
Obstech – Tele-CTG is a telemedicine service designed for remote fetal monitoring through cardiotocography (CTG) in home environments. It consists of a portable or wearable device that captures fetal heart rate and uterine activity signals, combined with a digital platform that transmits and displays this data securely to healthcare providers.
The system operates on a hybrid model: the pregnant woman uses the device at home while her clinical data is continuously available to her medical team through a dedicated professional interface. This eliminates the need for frequent hospital visits while maintaining the clinical quality and continuity of fetal monitoring.
1.2 The Concept of Remote CTG Monitoring¶
Cardiotocography CTG is the simultaneous recording of the fetal heart rate (FHR) and uterine contractions. It is a standard clinical tool used to assess fetal well-being during pregnancy and labor. In its traditional form, CTG requires the pregnant woman to visit a hospital or clinic, where sensors are placed on the abdomen and connected to a monitor.
Remote CTG monitoring refers to the use of portable or wearable sensors to perform CTG outside the clinical setting, typically at home, with data transmitted electronically to healthcare providers. This approach enables continuous or on-demand monitoring, reducing the burden on hospital services and improving access for patients in remote or underserved areas.
1.3 Project Motivation and Objectives¶
The motivation for this project stems from the clear limitations of current CTG monitoring practice:
- Frequent and inconvenient hospital visits for routine monitoring;
- Episodic rather than continuous fetal surveillance;
- Overloaded obstetrics departments;
- Limited autonomy for the pregnant woman;
- Poor access for patients in rural or geographically isolated areas.
The main objectives of
Obstech – Tele-CTG are:
- Develop a remote CTG monitoring solution usable in a home environment;
- Review the state of the art and identify gaps in existing solutions;
- Contact relevant stakeholders (pregnant women, obstetricians, nurses) for requirements gathering;
- Design functional mockups of both the patient and clinical interfaces;
- Validate the proposed system's utility, usability, and clinical viability.
2. Market Assessment Study¶
2.1 Review of Existing Solutions¶
A systematic review of existing solutions for remote fetal monitoring was conducted. The solutions were evaluated across five key criteria: home use capability, full CTG measurement (FHR + uterine activity), clinical interface, patient interface, and automatic data analysis.
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