How long should cardiotocography be monitored in a mother with 20 or more weeks gestation?

The correct choice emphasizes that cardiotocography (CTG) should be monitored for at least six hours in a mother with 20 or more weeks of gestation. This time frame is crucial for a thorough assessment of fetal well-being. Monitoring for this duration allows healthcare providers to obtain a comprehensive view of the fetal heart rate patterns, uterine contractions, and any potential signs of fetal distress.

In particular, a six-hour monitoring period can help identify any chronic or intermittent issues affecting the fetus, such as hypoxia or other stress signals, which might not be evident in a shorter monitoring period. This is especially relevant in high-risk pregnancies, where continuous assessment is critical for timely intervention. The standard recommendation for this monitoring duration is informed by clinical guidelines that aim to optimize maternal and fetal outcomes.