Why Would Taking a Xanthine Derivative Be Contraindicated in a Patient

question 18

Multiple Choice

Why would taking a xanthine derivative be contraindicated in a patient with peptic ulcer disease?

• A)Xanthines decrease catecholamines,further aggravating a peptic ulcer.
• B)Theophylline neutralizes the enzymes necessary to metabolize xanthines.
• C)Theophylline inhibits prostaglandin synthesis.
• D)Xanthines prohibit the elimination of theophylline.

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Definitions:

Integuments

Layers of protective tissues surrounding the ovules of plants, which develop into the seed coat upon fertilization.

Accessory Fruit

A fruit consisting primarily of tissue other than ovary tissue (e.g., apple, pear). Compare with aggregate, simple, and multiple fruits.

Coleoptile

A protective sheath covering the emerging shoot in monocotyledons, such as grasses and cereals.

Embryonic Plant

A stage in plant development where the embryo forms within the seed, eventually growing into a new plant.