The Cardiotocograph (CTG) is the standard device used for continuous fetal heart rate monitoring during labor. It simultaneously records the fetal heart rate and uterine contractions, allowing for real-time assessment of fetal well-being. Continuous monitoring helps detect signs of fetal distress early, enabling timely clinical interventions. Unlike intermittent methods, the CTG provides a comprehensive tracing that reflects changes in heart rate patterns correlated with contractions. This continuous information is crucial for ensuring fetal oxygenation and preventing adverse outcomes during labor.

Reference: Williams Obstetrics, Cunningham et al., 25th Edition.