A nurse is caring for a client who is pregnant and is at the end of her first trimester. The nurse should place the Doppler ultrasound stethoscope in which of the following locations to begin assessing for the fetal heart tones (FHT)?

A. Resting tone of 15 mmHg:A resting tone of 15 mmHg is generally acceptable and indicates normal uterine resting pressure, which should be between 5 and 20 mmHg.

B. Frequency of every two minutes. A frequency of every two minutes can be acceptable during labor, especially if the contractions are not too long or intense. The key consideration is the duration and intensity of the contractions.

C. Intensity of 60 to 90 mmHg: This intensity is typically acceptable for labor induction and signifies effective contractions. There’s no indication to stop oxytocin based solely on this intensity range.

D. Duration of 90 to 120 seconds:A contraction lasting 90 to 120 seconds is concerning and indicates potential uterine hyperstimulation, warranting the discontinuation of oxytocin to protect both the mother and fetus from adverse effects.

A. Decreased vaginal discharge is not typically associated with the onset of labor. In fact, an increase in vaginal discharge may be observed as the cervix begins to soften and efface.

B. Weight gain of 0.5 to 1.5 kg is not a specific sign that precedes labor. Weight gain during late pregnancy is more related to fluid retention, and it does not necessarily indicate imminent labor.

C. Urinary retention is not a common sign that precedes labor. However, increased pressure on the bladder from the descending fetus may lead to more frequent urination rather than retention.

D. A surge of energy is known as the "nesting instinct" and is a common sign that precedes labor. Some women experience a burst of energy and motivation to prepare for the upcoming birth.