In the '3 Ps' framework of labour assessment (Power, Passenger, Passage), which component refers to the frequency, duration, and strength of uterine contractions?

The observation describes uterine contraction frequency and duration, both aspects of **Power**. Four contractions per 10 minutes and a 50-second duration fall within the stated range. This alone does not establish that the entire labour is normal: fetal and passage factors must also be considered. **Key takeaway:** A contraction pattern within range is one part of a complete labour assessment.\n\n**Glossary:** **Benchmark**: a reference range used for comparison; **P**: one component of the 3-P framework.