Can you see contractions on NST?
Similarly, you may ask, how do contractions show on monitor?
The red indicator is showing the mother's contractions. The fetal heart rate is usually on the top of a computer screen, with the contractions on the bottom. Graph paper that is printed has the fetal heart rate to the left and the contractions to the right.
Consequently, what should an NST look like?
A non-stress test (NST) looks at your baby's heart rate over time (usually 20 to 30 minutes, but sometimes up to an hour). The monitor has two sensors that are placed on your belly with two belts that go around your waist. One sensor detects any contractions you may be having, even those you might not feel.
When the cervix dilates from 4 to 8 centimeters (called the Active Phase), contractions get stronger and are about 3 minutes apart, lasting about 45 seconds.