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A client has been taking a drug (Drug A) that is highly metabolized by the cytochrome p-450 system. He has been on this medication for 6 months. At this time, he is started on a second medication (Drug B) that is an inducer of the cytochrome p-450 system. You should monitor this client for:
- A. increased therapeutic effects of Drug A.
- B. increased adverse effects of Drug B.
- C. decreased therapeutic effects of Drug A.
- D. decreased therapeutic effects of Drug B.
Correct Answer: C
Rationale: Drug B induces the cytochrome p-450 enzyme system of the liver, thus increasing the metabolism of Drug A, reducing its therapeutic effects.
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When inspecting the ears for cerumen impaction, the nurse checks for which finding?
- A. Redness and swelling of the tympanic membrane
- B. An external auditory canal that is longer than normal
- C. The presence of edema in the external auditory canal
- D. A yellowish or brownish waxy material in the external auditory canal
Correct Answer: D
Rationale: When inspecting the ears for cerumen impaction, the nurse should look for a yellowish or brownish waxy material in the external auditory canal. Cerumen, also known as ear wax, is a secretion that can become impacted due to various reasons. It is produced by the vestigial apocrine sweat glands in the external ear canal. Cerumen may partially obscure the eardrum or totally occlude the ear canal. The other options, redness and swelling of the tympanic membrane, an external auditory canal that is longer than normal, and the presence of edema in the external auditory canal, are not indicative findings of cerumen impaction.
A nurse assisting with data collection notes that the client's skin is very dry. The nurse documents this finding using which term?
- A. Xerosis
- B. Pruritus
- C. Seborrhea
- D. Actinic keratoses
Correct Answer: A
Rationale: Dry skin is also called xerosis. In this condition, the epidermis lacks moisture or sebum and is often marked by a pattern of fine lines, scaling, and itching. Xerosis is the correct term for very dry skin. Pruritus is the symptom of itching, an uncomfortable sensation that prompts the urge to scratch the skin, but it does not specifically refer to dry skin. Seborrhea is a skin condition characterized by overproduction of sebum, leading to excessive oiliness or dry scales, not necessarily indicating very dry skin. Actinic keratoses are sun-related skin lesions that are premalignant and not associated with dry skin.
The LPN is preparing a client for discharge, and the discharge medications include phenobarbital. Which of these client statements would indicate a need for reinforced teaching about this medication?
- A. "I will need to avoid eating excessive leafy greens."?
- B. "It's best to take this medication with food."?
- C. "I can't wait to get back to my nightly glass of wine."?
- D. "I should try to take this medication at the same time every day."?
Correct Answer: C
Rationale: The correct answer is, "I can't wait to get back to my nightly glass of wine,"? as phenobarbital should not be taken with alcohol as it is a barbiturate. Alcohol may increase the sedative effect, posing risks to the patient's safety. Choice A, "I will need to avoid eating excessive leafy greens,"? is unrelated to phenobarbital and not a cause for reinforced teaching. Choice B, "It's best to take this medication with food,"? is a general instruction and not specific to phenobarbital. Choice D, "I should try to take this medication at the same time every day,"? is a common recommendation for medication adherence but does not highlight a specific concern related to phenobarbital.
An allergic reaction is classified as what type of pharmacological effect?
- A. a therapeutic effect
- B. a side effect
- C. an adverse effect
- D. an incompatibility
Correct Answer: C
Rationale: An allergic reaction is classified as an adverse effect because it is an unintended response to a medication that requires treatment. A side effect is an undesired but somewhat expected reaction to a drug that does not necessarily need intervention. Incompatibility refers to an unsuitable combination of substances that leads to an adverse effect. A therapeutic effect is the desired and intended outcome of a medication.
During a genital examination of a male client, a nurse notices wrinkled skin on the penis and scrotum. What should the nurse do based on this finding?
- A. Documents the normal finding
- B. Checks for penile discharge, as this indicates infection
- C. Palpates for a mass in the scrotum, as wrinkling suggests the presence of one
- D. Obtains additional subjective data from the client, focusing on the scrotal abnormality
Correct Answer: A
Rationale: The penile skin typically appears wrinkled and hairless, without lesions, during a normal examination. Also, the scrotal skin naturally has a wrinkled appearance known as rugae. It is common for the left half of the scrotum to be positioned lower than the right, indicating normal asymmetry. Given these normal variations, the nurse should document the finding of wrinkled skin on the penis and scrotum. Checking for penile discharge or palpating for a mass in the scrotum is not indicated based on the presence of wrinkled skin, as this is a normal finding. Obtaining additional subjective data focusing on a scrotal abnormality is unnecessary since the wrinkled appearance is typical.