Final answer:
The 3 P's causing arrest of labor are Passage (birth canal), Passenger (fetus), and Power (uterine contractions). Compromises in any of these can lead to stalled labor, often managed with interventions such as synthetic oxytocin or surgical delivery.
Step-by-step explanation:
Causes of Arrest of Labor
The 3 P's of the causes of arrest of labor refer to three primary factors that can affect the progression of labor and potentially lead to its arrest if one or more are compromised. These are known as the Passage, the Passenger, and Power. Passage refers to the birth canal, including the bony pelvis and the soft tissues. Obstructions or anatomical abnormalities in the birth canal can impede labor progress. The Passenger represents the fetus, whose size, position, and presentation can either facilitate or hinder the birthing process. Finally, Power relates to the strength, frequency, and effectiveness of uterine contractions required to deliver the baby through the birth canal. In cases where labor arrest occurs, management may involve interventions such as synthetic oxytocin administration to stimulate contractions or surgical delivery if indicated.