ATI RN
Pharmacology and the Nursing Process 9th Edition Test Bank Questions
Question 1 of 5
Mr. Reyes is extremely confused. The nurse provide new information slowly and in small amounts because;
Correct Answer: A
Rationale: The correct answer is A: Confusion or delirium can be a defense against further stress. This is because providing new information slowly and in small amounts can help prevent overwhelming Mr. Reyes, who is already confused. This approach allows him to process and understand the information more effectively without adding to his stress levels. Choices B, C, and D are incorrect: B: Destruction of brain cells has occurred, interrupting mental activity - This is not the most appropriate explanation as it assumes irreversible damage to the brain, which is not mentioned in the question. C: Teaching based on information progressing from the simple to the complex - While this may be a valid teaching strategy in general, it does not address Mr. Reyes' specific state of confusion and the need to reduce stress. D: A minimum of information should be given, since he is unaware of surrounding - This choice does not address the underlying reason for providing information slowly, which is to manage stress and confusion, rather than solely focusing on the
Question 2 of 5
The client with myasthenia gravis has become increasingly weaker. The physician prepares to identify whether the client is reacting to an overdose of the medication (cholinergic crisis) or an increasing severity of the disease (myasthenic crisis). An injection of edrophonium (Tensilon) is administered. Which of the following would indicate that the client is in cholinergic crisis?
Correct Answer: B
Rationale: The correct answer is B: An improvement of the weakness. Edrophonium is a short-acting cholinesterase inhibitor that helps differentiate between myasthenic and cholinergic crises in myasthenia gravis. In cholinergic crisis, there is an overdose of cholinesterase inhibitors leading to excessive acetylcholine at the neuromuscular junction, causing muscle weakness. Administering edrophonium will temporarily improve muscle weakness in cholinergic crisis due to the increased availability of acetylcholine. The other choices are incorrect because: A: No change suggests the client is not in cholinergic crisis. C: Complaints of muscle spasms are more indicative of myasthenic crisis. D: A temporary worsening of the condition is not expected in cholinergic crisis.
Question 3 of 5
The nurse would evaluate that the patient understands what triggers allergic rhinitis by which of the following patient responses?
Correct Answer: D
Rationale: The correct answer is D because airborne pollens and molds are common triggers for allergic rhinitis. Understanding these triggers helps in avoiding exposure and managing symptoms. Choices A, B, and C are incorrect as they do not specifically relate to allergic rhinitis triggers, focusing instead on other forms of medication or topical applications. By understanding airborne triggers, the patient can take appropriate preventive measures.
Question 4 of 5
The most common buffer system in the body is the:
Correct Answer: D
Rationale: The correct answer is D, the bicarbonate-carbonic system. This buffer system is crucial in maintaining the body's pH balance. When CO2 combines with water in the blood, it forms carbonic acid, which dissociates into bicarbonate ions and hydrogen ions. Bicarbonate acts as a base, accepting excess hydrogen ions to prevent a decrease in pH. Hemoglobin and plasma proteins primarily function as transport molecules, not as buffer systems. Phosphate buffer system is present in intracellular fluids, not as commonly in the body. The bicarbonate-carbonic system is the most prevalent buffer system in the blood and plays a vital role in regulating blood pH.
Question 5 of 5
Antimetabolites are a diverse group of antineoplastic agents that interfere with various metabolic actions of the cell. The mechanism of action of antimetabolites interferes with:
Correct Answer: D
Rationale: The correct answer is D because antimetabolites interfere with the synthesis of nucleic acids (RNA and/or DNA), affecting multiple stages of RNA and DNA synthesis. This disruption hinders cell division and leads to cell death. Choices A and B are incorrect because antimetabolites do not specifically target cell division during the M phase or normal cellular processes during the S phase. Choice C is also incorrect because antimetabolites primarily target nucleic acid synthesis rather than altering the chemical structure of DNA or the binding between DNA molecules.