A client who has chronic bronchial asthma has had a mast cell stabilizer prescribed.
What drug would the provider prescribe?

Metoclopramide is a medication that increases muscle contractions in the upper digestive tract and speeds up the rate at which the stomach empties into the intestines. It is used to treat gastroparesis (slow stomach emptying) in people with diabetes, which can cause heartburn and stomach discomfort after meals.

Choice A is wrong because impaction is a condition where a large mass of dry, hard stool becomes stuck in the rectum and cannot be passed.

Metoclopramide does not treat impaction, but laxatives or enemas may be used instead.

Choice C is wrong because encopresis is a condition where a child over the age of 4 has involuntary bowel movements, usually due to chronic constipation.

Metoclopramide does not treat encopresis, but behavioral therapy, laxatives, or dietary changes may be used instead.

Choice D is wrong because metoclopramide is not used for clients requiring diagnostic procedures involving the stomach or intestines.

However, it may be used to prevent nausea and vomiting caused by chemotherapy or surgery.

The CTZ has to be stimulated in order for vomiting to occur. The CTZ is located in the area postrema of the medulla oblongata and receives input from various sources, such as the blood, the vestibular system, and the gastrointestinal tract.

Choice A is wrong because the limbic system involves emotion, not vomiting or other forms of GI function.

Choice B is wrong because the hypothalamus regulates various functions such as body temperature, hunger, thirst, and circadian rhythms, but not vomiting.

Choice D is wrong because the medulla oblongata is responsible for autonomic functioning such as ventilation, cardiac conduction, and vomiting, but it is not the site of stimulation for vomiting.

The medulla oblongata contains the vomiting center, which receives signals from the CTZ and other sources and initiates the act of vomiting.