A nurse is collecting data from a client who is taking dimenhydrinate to treat motion sickness. Which of the following findings is an adverse effect of this medication?

Drowsiness

Hypertension

Polyuria

Dependent edema

Answer and Explanation

The Correct Answer is A

A. Drowsiness. Dimenhydrinate is an antihistamine that works by blocking histamine and acetylcholine receptors in the brain to prevent nausea and vomiting. A common adverse effect is drowsiness due to its sedative properties, which can impair alertness and coordination. Clients should be advised to avoid activities requiring mental alertness, such as driving, until they understand how the medication affects them.

B. Hypertension. Dimenhydrinate does not typically cause hypertension. Instead, it may lead to mild hypotension due to its sedative and anticholinergic effects. Clients with pre-existing hypertension should still monitor their blood pressure, but significant increases are uncommon.

C. Polyuria. Increased urination is not associated with dimenhydrinate use. Antihistamines, including dimenhydrinate, have anticholinergic properties, which can lead to urinary retention rather than increased urine output. Clients experiencing difficulty urinating should report this to their healthcare provider.

D. Dependent edema. Dimenhydrinate does not cause fluid retention or edema. Medications that contribute to edema typically involve hormonal, cardiovascular, or kidney-related effects, which are not mechanisms of dimenhydrinate. If a client develops unexplained edema, other underlying conditions should be investigated.

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Correct Answer is D

Explanation

A. Atropine. Atropine is an anticholinergic medication used to treat bradycardia and reduce secretions before surgery. It has no effect on reversing anticoagulation caused by heparin and would not be an appropriate treatment for heparin overdose.

B. Vitamin K. Vitamin K is used as an antidote for warfarin toxicity, as it helps produce clotting factors that warfarin inhibits. However, it does not reverse the effects of heparin, which works by enhancing the activity of antithrombin to prevent clot formation.

C. Vitamin B12. Vitamin B12 is essential for red blood cell production and neurological function, primarily used to treat conditions like pernicious anemia. It does not have any role in reversing the anticoagulant effects of heparin and would not be beneficial in this situation.

D. Protamine. Protamine sulfate is the specific antidote for heparin overdose. It binds to heparin, neutralizing its anticoagulant effects and preventing excessive bleeding. Protamine is administered intravenously in cases of heparin toxicity or when urgent reversal is needed, such as before surgery or in cases of uncontrolled bleeding.

A. Diphenhydramine B. Docusate sodium C. Ibuprofen D. Glucosamine

Correct Answer is A

Explanation

A. Diphenhydramine. Diphenhydramine is a first-generation antihistamine with anticholinergic properties that can increase the risk of central nervous system (CNS) depression when taken with haloperidol. Both drugs can cause sedation, confusion, and impaired coordination, increasing the risk of falls and other complications. Additionally, combining them can worsen extrapyramidal symptoms (EPS) or lead to anticholinergic toxicity, making it an unsafe combination.

B. Docusate sodium. Docusate sodium is a stool softener used to prevent constipation. Haloperidol can cause constipation as a side effect due to its anticholinergic properties, so docusate sodium is safe and may even be beneficial in preventing bowel complications.

C. Ibuprofen. Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID) used for pain and inflammation. While it does not have a direct interaction with haloperidol, it should be used with caution in clients with a history of gastrointestinal issues or kidney disease. However, it does not pose a significant risk when taken alongside haloperidol.

D. Glucosamine. Glucosamine is a dietary supplement used to support joint health. It does not interact with haloperidol and does not have sedative or CNS effects. Clients taking haloperidol can safely use glucosamine if needed.

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A nurse is collecting data from a client who is taking dimenhydrinate to treat motion sickness. Which of the following findings is an adverse effect of this medication?

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Correct Answer is D

Explanation

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