A client with seasonal allergies takes diphenhydramine at bedtime to help their symptoms. The client develops low hemoglobin low white blood cell counts which is otherwise unexplained. What type of reaction is the client experiencing?
Hypersensitivity reaction
Paradoxical reaction
Idiosyncratic reaction
Anti-cholinergic reaction
The Correct Answer is C
A) Hypersensitivity reaction: A hypersensitivity reaction typically involves an immune response where the body reacts to a substance as if it were harmful, leading to symptoms like rashes, swelling, or difficulty breathing. However, low hemoglobin and low white blood cell counts are not typical signs of a hypersensitivity reaction. This would involve more common allergic symptoms like itching or swelling, rather than hematologic changes.
B) Paradoxical reaction: A paradoxical reaction refers to when a medication causes an effect opposite to the expected result. For example, a sedative causing agitation instead of sleepiness. While a paradoxical reaction can involve unexpected effects, the hematologic changes (low hemoglobin and white blood cell counts) in this scenario do not align with this type of response.
C) Idiosyncratic reaction: An idiosyncratic reaction is an unusual or unexpected response to
a medication that is not related to the drug's pharmacologic properties or the dose given. It may be related to genetic factors or other individual differences in how a person metabolizes or responds to the drug. The low hemoglobin and low white blood cell counts in this case are unusual effects of diphenhydramine and suggest an idiosyncratic response, where the client’s body is reacting in an unexpected way to the medication.
D) Anti-cholinergic reaction: Anti-cholinergic reactions are typically related to symptoms caused by the blocking of acetylcholine, such as dry mouth, blurred vision, urinary retention, or constipation. While diphenhydramine has anti-cholinergic properties, the symptoms described (low hemoglobin and white blood cell counts) are not typical of an anti-cholinergic reaction.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A) Low albumin: This factor has the most impact on the pharmacokinetic phase of distribution. Albumin is a key protein in the blood that binds to many medications. When albumin levels are low, fewer drug molecules will be bound, leading to an increased concentration of free (unbound) drug in the bloodstream. This can result in enhanced drug effects or toxicity, as the unbound drug is pharmacologically active and more readily able to cross cell membranes.
B) Renal disease: While renal disease can impact drug elimination and excretion, it does not have as direct an effect on the distribution phase of pharmacokinetics. Renal function primarily affects the clearance of drugs from the body rather than how the drug is distributed within the tissues.
C) Hepatic disease: Hepatic disease can affect the metabolism of drugs and their clearance, but it does not directly affect the distribution phase. While the liver is involved in metabolizing drugs, it is the ability to clear or process the drug that is most influenced, rather than its distribution to tissues.
D) An elevated gastric pH: Elevated gastric pH (which can occur with antacid use or in certain conditions) can affect the absorption of some medications but has minimal direct impact on the distribution phase of pharmacokinetics. Distribution is primarily concerned with how a drug moves from the bloodstream into tissues, and this is more influenced by factors like blood flow, protein binding, and the drug's lipophilicity, rather than the pH of the stomach.
Correct Answer is A
Explanation
A) The client will remain free from visible bleeding, bruising, and signs of internal bleeding (tachycardia and hypotension) during this shift: This is the most appropriate outcome for the "Risk for bleeding" nursing diagnosis. Since both aspirin and warfarin are anticoagulants, they increase the client's risk of bleeding. The priority is to monitor for and prevent any signs of visible bleeding, bruising, or more serious internal bleeding, which could manifest as tachycardia or hypotension. This outcome directly addresses the client's safety by focusing on detecting and preventing bleeding complications.
B) The client will verbalize understanding of dietary restrictions while on warfarin and provide examples of foods that contain vitamin K during this shift: While this is an important goal for clients on warfarin (because vitamin K can interfere with the effectiveness of warfarin), it is not the most immediate concern in the context of the "Risk for bleeding" diagnosis. Dietary restrictions should be discussed but are not as time-sensitive or directly related to the prevention of bleeding in the short term, especially during this shift.
C) The client will state their pain level is less than 4 on a 0-10 pain scale during aspirin therapy: While managing pain is important, this outcome does not directly address the risk for bleeding associated with both aspirin and warfarin therapy. The priority nursing concern here is preventing bleeding, not pain management during aspirin therapy.
D) The client will remain free from any signs and symptoms of deep vein thrombosis (DVT): While preventing DVT is important for patients on anticoagulant therapy, the focus of this nursing diagnosis is on the risk of bleeding, not thrombosis. Therefore, this outcome is not as relevant to the immediate concerns related to the prescribed medications (aspirin and warfarin).
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