NCLEX-PN
NCLEX PN Exam Cram
1. If a client is suffering from thyroid storm, the PN can expect to find on assessment:
- A. tachycardia and hyperthermia.
- B. bradycardia and hypothermia.
- C. a large goiter.
- D. a calm, quiet client
Correct answer: A
Rationale: In thyroid storm, there is an excess of thyroxine, leading to symptoms such as tachycardia (rapid heart rate) and hyperthermia (increased body temperature). Atrial fibrillation and palpitations are also commonly observed. Choices B and C are more indicative of hypothyroidism, where the thyroid is underactive, leading to bradycardia (slow heart rate), hypothermia (decreased body temperature), and the development of a large goiter. Choice D, a calm, quiet client, is unlikely in a thyroid storm where the individual would typically present with symptoms of agitation and restlessness due to the hypermetabolic state.
2. A client has been taking a drug (Drug A) that is highly metabolized by the cytochrome P-450 system. He has been on this medication for 6 months. At this time, he is started on a second medication (Drug B) that is an inducer of the cytochrome P-450 system. You should monitor this client for:
- A. increased therapeutic effects of Drug A.
- B. increased adverse effects of Drug B.
- C. decreased therapeutic effects of Drug A.
- D. decreased therapeutic effects of Drug B.
Correct answer: C
Rationale: When a client is taking a drug (Drug A) metabolized by the cytochrome P-450 system and is then started on another drug (Drug B) that induces this system, the metabolism of Drug A is increased. This results in decreased therapeutic effects of Drug A as it is broken down more rapidly. Monitoring is required to address potential reduced efficacy. The therapeutic effect of Drug A is diminished, not enhanced. Inducing the cytochrome P-450 system does not directly increase the adverse effects of Drug B. Although Drug B is an inducer, its therapeutic effects are not decreased as it is not metabolized faster.
3. Which of the following arterial blood gas values indicates a patient may be experiencing a condition of metabolic acidosis?
- A. PaO2 90 mm Hg
- B. Bicarbonate 15 mEq/L
- C. CO2 47 mm Hg
- D. pH 7.34
Correct answer: B
Rationale: The correct answer is B: Bicarbonate 15 mEq/L. In metabolic acidosis, the bicarbonate levels are lower than normal. A bicarbonate value of 15 mEq/L indicates a deficit in the buffer system, contributing to the acidosis. Choices A, C, and D are incorrect. Choice A, PaO2 90 mm Hg, reflects oxygen partial pressure and is not directly related to metabolic acidosis. Choice C, CO2 47 mm Hg, represents carbon dioxide levels and is more indicative of respiratory status. Choice D, pH 7.34, falls within the normal range (7.35-7.45) and does not confirm metabolic acidosis.
4. Which client should be seen first by the Emergency Department nurse?
- A. A six-year-old with a femur fracture.
- B. A two-year-old with a fever of 102 degrees F.
- C. A three-year-old with wheezes in the right lower lobe.
- D. A two-year-old whose gastrostomy tube came out.
Correct answer: C
Rationale: The priority in the emergency department is to assess and manage clients based on the severity of their condition. In this scenario, the three-year-old with wheezes in the right lower lobe should be seen first because respiratory distress takes precedence over other conditions. Wheezing indicates potential airway compromise, which requires immediate attention to ensure adequate oxygenation. The other options are important but do not pose an immediate threat to the client's airway and breathing. A femur fracture, fever, or a dislodged gastrostomy tube can be addressed after ensuring the child with respiratory distress is stable.
5. Which of the following medications is not classified as a neuromuscular blocker?
- A. Anectine
- B. Pavulon
- C. Pitressin
- D. Mivacron
Correct answer: C
Rationale: The correct answer is Pitressin. Pitressin is a hormone replacement medication and is not classified as a neuromuscular blocker. Choices A, B, and D (Anectine, Pavulon, Mivacron) are neuromuscular blockers used during anesthesia to induce muscle relaxation for various procedures. Anectine is also known as succinylcholine, Pavulon is rocuronium, and Mivacron is mivacurium. These medications act on the neuromuscular junction to block the transmission of nerve impulses, leading to muscle relaxation.
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