The Labor Nurse Is Reviewing Breathing Techniques with a Primipara

The labor nurse is reviewing breathing techniques with a primipara admitted for induction of labor. When is the best time to encourage the laboring patient to use slow, deep chest breathing with contractions?

A) During labor, when she can no longer talk through contractions
B) During the first stage of labor, when the contractions are 3 to 4 minutes apart
C) Between contractions, during the transitional phase of the first stage of labor
D) Between her efforts to push to facilitate relaxation between contractions