Which medication is used as a bronchodilator?

Correct Answer: C

Rationale: Albuterol is the correct answer. It is a medication commonly used as a bronchodilator to treat conditions such as asthma. Albuterol works by relaxing the muscles in the airways, allowing better airflow and making breathing easier for individuals with respiratory conditions. Warfarin (Choice A) is an anticoagulant used to prevent blood clots, Lovastatin (Choice B) is a medication used to lower cholesterol levels, and Valproate (Choice D) is used to treat seizures and bipolar disorder. These medications are not bronchodilators and are used for different medical conditions.

Correct Answer: B

Rationale: Clients prescribed verapamil should be advised to avoid grapefruit juice as it can potentiate the drug's effects, leading to adverse reactions. Grapefruit juice can inhibit the metabolism of verapamil, resulting in higher blood levels of the medication and an increased risk of side effects. Instructions such as taking the medication with a full glass of water (Choice A) are not specific to verapamil and are generally recommended. While monitoring blood pressure regularly (Choice C) is important for clients on antihypertensive medications, it is not a direct concern related to verapamil. Monitoring heart rate daily (Choice D) is not a primary consideration when starting verapamil, as it is more commonly used for its effects on blood pressure and arrhythmias rather than heart rate.

Correct Answer: C

Rationale: Adrenaline, or epinephrine, is a catecholamine that exerts its effects through adrenergic receptors, which are G-protein-coupled, making its action via G-proteins a true statement. Alpha receptor stimulation typically inhibits adenylate cyclase, reducing cyclic AMP (cAMP) production, which aligns with its known pharmacology and is also true. Adrenaline can indeed be administered via inhalation (e.g., for asthma), orally (though less common), and parenterally (e.g., intramuscularly in anaphylaxis), confirming this as true. However, adrenaline does have active metabolites, such as metanephrine and normetanephrine, produced via catechol-O-methyltransferase (COMT) metabolism, making the statement about having no active metabolites false. In cardiac arrest, it facilitates CPR by causing peripheral vasoconstriction, increasing coronary perfusion pressure, which is true. The false statement here is about the absence of active metabolites, as adrenaline's breakdown products retain some activity, a key point in understanding its pharmacokinetics and duration of effect.

Correct Answer: A

Rationale: The correct instruction for the nurse to include in the discharge teaching for a client prescribed Warfarin is to 'Avoid foods high in vitamin K.' Foods high in vitamin K can decrease the effectiveness of Warfarin by interfering with its anticoagulant effects, potentially leading to blood clotting issues. It is crucial for clients on Warfarin therapy to maintain a consistent intake of vitamin K-containing foods to ensure the stability of the medication's effects. Choices B, C, and D are incorrect because taking Warfarin with food, monitoring heart rate daily, or limiting fluid intake are not directly related to optimizing the effectiveness of Warfarin therapy.

Correct Answer: A

Rationale: The correct instruction is to take Alendronate with a full glass of water after rising in the morning. This helps reduce the risk of esophageal irritation, as the medication can cause irritation if not taken correctly. Taking it before bedtime (choice C) can increase the risk of irritation as the individual lies down. Lying down after taking the medication (choice B) can also lead to esophageal irritation. Crushing the tablet (choice D) is not recommended as Alendronate should be taken whole with a full glass of water.

Correct Answer: D

Rationale: The correct answer is D. Elevated AST levels in liver function tests should be reported to the provider when a client is prescribed Metformin due to the potential risk of hepatotoxicity associated with the medication. Elevated Hemoglobin A1C (choice A), Creatinine level within normal range (choice B), and BUN level within normal range (choice C) are not directly concerning when initiating Metformin therapy.

Correct Answer: D

Rationale: Aspirin is an anticoagulant that inhibits platelet function, increasing the risk of bleeding during surgery. It is important for the healthcare professional to identify this medication, inform the surgical team, and consider withholding it prior to surgery to reduce the risk of excessive bleeding. Warfarin is also an anticoagulant but can be managed by adjusting the dosage or monitoring INR levels. Acetaminophen and ibuprofen are not associated with increased bleeding risk as they do not affect platelet function like aspirin.

Correct Answer: C

Rationale: The correct answer is C: Neomycin. Neomycin, an aminoglycoside antibiotic, is administered orally before GI surgery to eliminate the normal flora in the large intestine. This helps reduce the risk of postoperative infections by decreasing the bacterial load in the gut. Choices A, B, and D (Kanamycin, Gentamicin, Tobramycin) are not typically used to suppress normal flora in the GI tract before colorectal surgery.

Correct Answer: D

Rationale: It is important to educate a patient that Regular Insulin should be injected subcutaneously to ensure proper absorption of the medication. Injecting the insulin into the subcutaneous tissue allows for a slower and more consistent absorption of the medication, which helps in controlling blood glucose levels effectively. Administering insulin subcutaneously also minimizes the risk of complications associated with other injection sites or techniques.