When a client reports using cocaine during her current pregnancy, which laboratory study should a nurse anticipate?

The correct answer is choice D. Insufficient relaxation of the uterus between contractions.This is also known astachysystoleorhyperstimulation, which can cause fetal distress and uterine rupture.Oxytocin is a hormone that stimulates uterine contractions, but it can also cause them to be too strong or too frequent if given in high doses or for too long.

Choice A is wrong because oxytocin does not decrease body temperature.

Choice B is wrong because oxytocin does not cause maternal cardiac arrhythmias.

Choice C is wrong because oxytocin does not cause urinary retention.

This is because the first priority for a pregnant woman with acute abdominal pain is to assess the fetal well-being and rule out any obstetric complications such as placental abruption, uterine rupture, or preterm labor.Fetal heart tones can indicate the presence and viability of the fetus and alert the nurse to any signs of fetal distress or hypoxia.

Choice A: Obtain a full history is wrong because it is not the most urgent action.

A full history can provide valuable information about the possible causes of abdominal pain, but it should not delay the assessment of fetal status and maternal vital signs.

Choice B: Examine the cervix for dilation is wrong because it can be harmful in some cases.A digital cervical examination should be avoided until placenta previa is ruled out by ultrasound, as it can cause bleeding and worsen the condition.

Moreover, cervical dilation alone does not indicate the cause or severity of abdominal pain.

Choice D: Palpate for uterine contraction frequency is wrong because it is not the most reliable method to assess labor.Uterine contractions can be measured by external tocodynamometry or internal intrauterine pressure catheter, which can provide more accurate and objective data than manual palpation.

Furthermore, uterine contractions do not necessarily indicate labor, as they can also be caused by other conditions such as dehydration, infection, or irritable uterus.