What finding should a nurse expect in a client during the active phase of labor with an intrauterine pressure catheter and fetal scalp electrode?

During the active phase of labor, a nurse can expect to see specific physiological changes regarding uterine contractions. When monitoring contractions using an intrauterine pressure catheter, the measurement of Montevideo units (MVU) is essential for understanding the effectiveness of labor. An MVU of 220 mm Hg indicates adequate contractions necessary for cervical dilation and fetal descent during this phase of labor.

The active phase of labor is characterized by more frequent and intense contractions, typically leading to an MVU of at least 200 mm Hg to facilitate effective labor progression. An MVU of 220 mm Hg indicates strong enough contractions that can help in the progressive dilation of the cervix.

In contrast, the other options represent findings that may not align with the expected standards of the active phase of labor. A fetal heart rate of 150 bpm is within normal limits, but it does not specifically indicate the findings associated with contraction strength and effectiveness. Similarly, contractions lasting only 30 seconds may be too short for the active phase of labor, which usually involves stronger and longer-lasting contractions of 60 seconds or more. An MVU of 100 mm Hg is also insufficient for the active phase, as it would typically indicate inadequate labor progress. Thus, the selection of an MVU