A nurse is providing discharge teaching to a new guardian about car seat safety.
Which of the following statements by the guardian indicates an understanding of the teaching?

Choice A rationale

While seizures are a serious adverse effect of ergot alkaloids, they are primarily associated with the most severe form of ergotism, which is an overdose or prolonged exposure, or in clients with severe preeclampsia/eclampsia. Methylergonovine's more common and immediate adverse effect is its potent vasoconstrictive property, leading to elevated blood pressure.

Choice B rationale

Methylergonovine is an ergot alkaloid that acts as a potent vasoconstrictor and smooth muscle contractor, primarily on the uterus to treat postpartum hemorrhage and uterine atony. Its generalized vasoconstrictive effect, however, can lead to a significant elevation in blood pressure, making hypertension (blood pressure greater than 140/90 mmHg or an increase of 20 mmHg or more) a major and frequent adverse effect.

Choice C rationale

Methylergonovine's potent vasoconstrictive action typically causes an increase in peripheral vascular resistance, which often results in bradycardia (heart rate less than 60 beats/min) as a reflex response to the elevated blood pressure. Tachycardia (heart rate greater than 100 beats/min) is not a typical adverse effect of this medication.

Choice D rationale

Methylergonovine acts mainly on the smooth muscle of the uterus and blood vessels; it does not typically cause water retention. Water retention is more commonly associated with conditions like preeclampsia or medications such as glucocorticoids. The adverse effects of methylergonovine center around vasoconstriction and uterine cramping.

Choice A rationale

Hydrotherapy, like immersion in a tub or shower, is a nonpharmacological comfort measure for labor pain management. The therapeutic temperature of the water should indeed be maintained between 36 to 37°C (about 96.8 to 98.6°F). This range ensures the water is comfortably warm, promoting muscle relaxation, reducing pain perception, and avoiding potential maternal hyperthermia or fetal distress due to extreme temperatures.

Choice B rationale

Counterpressure is a technique used to relieve back pain caused by pressure of the fetal occiput against the sacrum, commonly known as "back labor.”. It involves steady, strong pressure applied by a support person to the sacral area or lower back, not the upper abdomen. Applying pressure to the upper abdomen would be ineffective and potentially uncomfortable for the client.

Choice C rationale

Effleurage is a light, rhythmic, stroking massage, often applied to the abdomen, used primarily during contractions in the first stage of labor to promote relaxation and distract from pain. It is generally not used during the pushing phase (second stage), as the client's focus shifts to bearing down and expelling the fetus, making effleurage distracting and ineffective.

Choice D rationale

Transcutaneous Electrical Nerve Stimulation (TENS) involves applying mild electrical currents via electrodes to the skin. During labor, the electrodes are typically placed on the lower back (sacral area) to block pain signals related to contractions as they travel up the spinal cord. Applying the TENS unit to the lower abdomen is not the standard placement for optimal labor pain relief.