ATI RN
Endocrine System Exam Questions Questions
Question 1 of 5
Which patient's nursing care would be most appropriate for the charge nurse to assign to the LPN, under the supervision of the RN team leader?
Correct Answer: A
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 2 of 5
A nurse assesses a client who is prescribed a medication that stimulates beta1 receptors. Which assessment finding would indicate that the medication is effective?
Correct Answer: A
Rationale: The correct answer is A: Heart rate of 92 beats/min. Activation of beta1 receptors increases heart rate. Therefore, a heart rate of 92 beats/min indicates that the medication is effectively stimulating beta1 receptors. Choices B, C, and D are incorrect as they do not directly correlate with beta1 receptor stimulation. Choice B (Respiratory rate of 18 breaths/min) is influenced more by beta2 receptors. Choice C (Oxygenation saturation of 92%) is related to oxygen levels in the blood, not beta1 receptor stimulation. Choice D (Blood pressure of 144/69 mm Hg) is more affected by alpha receptor stimulation than beta1 receptor stimulation.
Question 3 of 5
We have a 48-year-old female patient with a history of myasthenia gravis. She has been treated with an oral acetylcholinesterase inhibitor for several years and has done well till now. She presents with muscle weakness and other signs and symptoms that could reflect either a cholinergic crisis (excess dosages of her maintenance drug) or a myasthenic crisis (insufficient treatment). We will use a rapidly acting parenteral acetylcholinesterase inhibitor (AChE) to help make the differential diagnosis. Which of the following drugs would be most appropriate for this use?
Correct Answer: A
Rationale: The correct answer is A: Edrophonium. Edrophonium is a short-acting acetylcholinesterase inhibitor that can help differentiate between a cholinergic crisis and a myasthenic crisis. In this scenario, administering edrophonium will temporarily increase acetylcholine levels at the neuromuscular junction. If the patient's symptoms improve following edrophonium administration, it suggests a myasthenic crisis due to insufficient treatment. On the other hand, if the symptoms worsen, it indicates a cholinergic crisis due to excess dosages of the maintenance drug. Choice B: Malathion is an organophosphate insecticide and is not used for diagnosing myasthenia gravis. Choice C: Physostigmine is a longer-acting acetylcholinesterase inhibitor and is not appropriate for rapidly assessing the patient's condition in this scenario. Choice D: Pralidoxime is used as an antidote for organophosphate
Question 4 of 5
A 34-year-old carpenter presents to the emergency room after an accident in which he inadvertently chopped off the tip of his index finger. He is taken to the operating room for reattachment of the digit, and after sedation, a local anesthetic is administered around the site of the injury. The local anesthetic used in the procedure did not contain any epinephrine, as it usually does for most surgical procedures. The reason for this is
Correct Answer: D
Rationale: The correct answer is D. Epinephrine causes vasoconstriction, which can lead to vascular ischemia in digits. In delicate surgeries like finger reattachment, maintaining adequate blood flow is crucial for successful outcomes. Using epinephrine can constrict blood vessels excessively, leading to reduced blood supply and potential tissue damage. This can result in vascular ischemia, compromising the viability of the reattached finger. Explanation for incorrect choices: A: Epinephrine actually helps in reducing blood loss by constricting blood vessels. B: Epinephrine reduces tissue swelling, making surgery easier. C: Epinephrine is not contraindicated in emergency surgery; it is often used to control bleeding and prolong anesthesia.
Question 5 of 5
Pralidoxime is a cholinesterase reactivator used in the treatment of toxicity by:
Correct Answer: C
Rationale: The correct answer is C: Organic phosphate. Pralidoxime is used to treat toxicity caused by organophosphates, which inhibit cholinesterase enzymes. Pralidoxime works by reactivating the inhibited cholinesterase enzymes, restoring their function. Atropine is used to counteract the effects of excessive acetylcholine in cholinergic toxicity, not organophosphate poisoning. Nicotine is a nicotinic receptor agonist and not treated with pralidoxime. Amphetamine is a central nervous system stimulant and does not involve cholinesterase inhibition. Therefore, the correct answer is C as pralidoxime is specifically used to treat toxicity caused by organophosphates.