An electrically-powered device designed for continuous monitoring of foetal heart activity and maternal uterine contractions during the prenatal (commonly perinatal) period; it may monitor additional maternal parameters [e.g., electrocardiogram (ECG), noninvasive blood pressure (NIBP), pulse oximetry (SpO2)]. Also known as a cardiotocograph, uterine contractions are acquired using a tocodynamometer (pressure transducer) strapped onto the mother's abdomen, while foetal heart rate is typically measured with a dedicated ultrasound transducer. The results may be displayed via print-out or electronically; telemetry features may also be included.