What does the CTG depicts?
**Core Concept**
A CTG, or cardiotocogram, is a graphical representation of fetal heart rate and uterine contractions during pregnancy, used to assess fetal well-being and monitor labor. This non-invasive tool helps healthcare providers evaluate fetal status, identify potential issues, and make informed decisions about delivery.
**Why the Correct Answer is Right**
A CTG typically displays two main components: the fetal heart rate (FHR) and the uterine contraction (UC) tracing. The FHR tracing shows the baby's heart rate, while the UC tracing represents the intensity and frequency of contractions. This combined information helps healthcare providers assess fetal well-being, detect potential distress, and monitor the progression of labor.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as a CTG does not depict fetal movement or maternal vital signs. While these factors are important in assessing fetal well-being, they are not typically represented on a standard CTG.
**Option B:** This option is incorrect as a CTG does not depict the fetal ECG or maternal ECG. Although these waveforms can provide valuable information about fetal and maternal cardiac function, they are not part of a standard CTG.
**Option C:** This option is incorrect as a CTG does not depict Doppler ultrasound measurements. While Doppler ultrasound can provide information about fetal blood flow and cardiac function, it is not represented on a standard CTG.
**Clinical Pearl / High-Yield Fact**
A normal CTG typically shows a baseline fetal heart rate between 110-160 beats per minute, with a variability of 6-25 beats per minute. This information can help healthcare providers identify potential issues and take prompt action to ensure fetal well-being.
**Correct Answer: C. Uterine contraction tracing and fetal heart rate tracing**