Which method of heart rate monitoring can show fetal heart rate dysrhythmia?

The fetal scalp electrode is a method of heart rate monitoring that allows for more precise and continuous observation of the fetal heart rate. It provides direct measurements of the fetal heart rate by being applied to the fetal scalp, which makes it possible to detect subtle changes in heart rhythm, including dysrhythmias. This method reflects real-time information and is particularly useful in high-risk pregnancies or when there is a need for detailed monitoring during labor.

In contrast, while external fetal monitors can detect heart rates, they primarily provide a less direct assessment and might not capture certain dysrhythmias as accurately. Abdominal ultrasound is used for various assessments during pregnancy but is not designed specifically for monitoring heart rhythms directly. A contraction stress test evaluates the fetal heart rate response to contractions but is not primarily focused on detecting dysrhythmias. By using a fetal scalp electrode, clinicians can obtain more accurate and detailed information about the fetal heart rate's condition and rhythm, making it the preferred choice for identifying dysrhythmias.