Final answer:
Uterine hyperstimulation with oxytocin is indicated by uterine contractions lasting more than 90 seconds and occurring less than 2 minutes apart, uterine tone higher than 20 mm Hg, and increased uterine activity with a nonreassuring fetal heart rate and pattern.
Step-by-step explanation:
The nurse would recognize that a woman is experiencing uterine hyperstimulation with oxytocin if the following clinical cues are observed:
- Uterine contractions lasting >90 seconds and occurring <2 minutes in frequency.
- Uterine tone >20 mm Hg.
- Increased uterine activity accompanied by a nonreassuring fetal heart rate (FHR) and pattern.
These signs reflect an abnormal pattern of contractions that may compromise maternal and fetal well-being, requiring immediate medical intervention to manage the risk. During normal labor, uterine contractions should not be excessively long or frequently occurring; they usually start as every 3-30 minutes and last for 20-40 seconds, intensifying toward the end of the labor stage to every 1.5-2 minutes, lasting for about a minute. In contrast, hyperstimulation is indicated by much stronger and more frequent contractions, often leading to very high uterine tone and potentially distressful patterns on the FHR monitor.