A nurse is teaching a group of clients about St. John's wort.
Which of the following pieces of information should the nurse include in the teaching?

The correct answer is choice d. “St. John’s wort can reduce the effectiveness of oral contraceptives.”

Choice A rationale:

St. John’s wort is commonly used to treat mild to moderate depression. It has been shown to be effective in alleviating symptoms of depression, likely due to its impact on neurotransmitters like serotonin.

Choice B rationale:

There is no evidence to suggest that St. John’s wort can lower prostate-specific antigen (PSA) levels. PSA levels are typically monitored for prostate health, and St. John’s wort does not have an impact on these levels.

Choice C rationale:

St. John’s wort does not increase estrogen levels in the body. It primarily affects neurotransmitters and has no known effect on hormone levels.

Choice D rationale:

St. John’s wort can indeed reduce the effectiveness of oral contraceptives. It induces certain liver enzymes that can increase the metabolism of contraceptive hormones, thereby reducing their effectiveness and increasing the risk of unintended pregnancy.

Choice A rationale: Bradycardia

Bradycardia, or an abnormally slow heart rate, is a common cardiovascular manifestation in individuals with anorexia nervosa. It is often a result of the body’s adaptive response to conserve energy due to severe malnutrition and reduced caloric intake. This is because the body is trying to conserve as much energy as possible, and one way it does this is by slowing down the heart rate. This can be dangerous, however, as it can lead to fainting, heart failure, or even death if not properly managed.

Choice B rationale: Hyperactive bowel sounds

Hyperactive bowel sounds are not typically associated with anorexia nervosa. Instead, individuals with this disorder often experience constipation and other gastrointestinal issues due to inadequate food intake. The lack of food intake can slow down the digestive process, leading to these symptoms.

Choice C rationale: Dental erosion

Dental erosion can be a consequence of anorexia nervosa, but it is more commonly associated with bulimia nervosa due to the frequent vomiting that characterizes this disorder. The stomach acid that comes into contact with the teeth during vomiting can cause the enamel to erode. However, it’s important to note that not all individuals with anorexia nervosa will experience this symptom.

Choice D rationale: Hypertension

Hypertension, or high blood pressure, is not typically associated with anorexia nervosa. In fact, low blood pressure (hypotension) is more common due to the decreased volume of blood in the body from insufficient nutrition.

Hypertension is more commonly associated with conditions such as obesity and metabolic syndrome.