ATI RN
Cardiovascular System Drugs Classification Questions
Question 1 of 5
When administering a neuromuscular blocking drug such as pancuronium (Pavulon), the nurse needs to remember which principle?
Correct Answer: D
Rationale: The correct answer is D because neuromuscular blocking drugs like pancuronium cause paralysis of skeletal muscles, including respiratory muscles. This results in the need for artificial mechanical ventilation to support breathing. Choices A, B, and C are incorrect because neuromuscular blocking drugs do not provide anesthesia, only muscle paralysis; they paralyze all skeletal muscles, including respiratory muscles; and they do not provide sedation or pain relief, but rather require additional anesthesia and pain management.
Question 2 of 5
The nurse is reviewing new medication orders for a patient who has an epidural catheter for pain relief. One of the orders is for enoxaparin (Lovenox), a low–molecular-weight heparin (LMWH). What is the nurse’s priority action?
Correct Answer: D
Rationale: The correct answer is D: Contact the prescriber because the LMWH cannot be given if the patient has an epidural catheter. This is the priority action because LMWH use is contraindicated in patients with epidural catheters due to the increased risk of epidural hematoma. Contacting the prescriber ensures patient safety. Choice A is incorrect as giving the LMWH without addressing the contraindication can lead to serious complications. Choice B is unnecessary and delays necessary action. Choice C is incorrect as stopping the epidural medication without addressing the contraindication is not the priority.
Question 3 of 5
A patient who has started drug therapy for tuberculosis wants to know how long he will be on the medications. Which response by the nurse is correct?
Correct Answer: C
Rationale: The correct answer is C: “You should expect to take these drugs for as long as 24 months.” This is the correct response because drug therapy for tuberculosis typically lasts for 6 to 9 months for drug-sensitive TB and up to 24 months for drug-resistant TB. It is important to complete the full course of treatment to ensure complete eradication of the bacteria and prevent relapse. Choice A is incorrect because relying solely on symptoms to determine the duration of treatment may lead to premature discontinuation of therapy. Choice B is incorrect as drug therapy is not based on waiting for resistance to develop. Choice D is incorrect because drug therapy for tuberculosis is not lifelong in most cases, except for certain scenarios of drug-resistant TB.
Question 4 of 5
In case of liver disorders accompanied by a decline in microsomal enzyme activity the duration of action of some drugs is:
Correct Answer: B
Rationale: 1. Liver disorders can lead to a decline in microsomal enzyme activity. 2. Microsomal enzymes play a role in drug metabolism. 3. Reduced enzyme activity can lead to decreased drug metabolism. 4. Decreased drug metabolism can result in an enlarged duration of action. 5. Therefore, in liver disorders, the duration of action of drugs is likely to be enlarged. Summary: A: Incorrect - Decreased duration of action is less likely due to reduced metabolism. C: Incorrect - Activity of microsomal enzymes affects drug metabolism. D: Incorrect - Changes in drug action may be significant due to altered metabolism.
Question 5 of 5
Indicate the local anesthetic agent, which has a shorter duration of action:
Correct Answer: B
Rationale: The correct answer is B: Procaine. Procaine has a shorter duration of action compared to the other choices. This is because procaine is an ester-type local anesthetic, which undergoes rapid hydrolysis by plasma cholinesterase, resulting in a shorter duration of action. In contrast, lidocaine, bupivacaine, and ropivacaine are amide-type local anesthetics, which are metabolized more slowly, leading to longer durations of action. Therefore, procaine is the local anesthetic with the shortest duration among the options provided.