ATI LPN
LPN Pharmacology Practice Questions
1. A client with a history of atrial fibrillation is prescribed warfarin (Coumadin). Which laboratory value should the nurse monitor to assess the effectiveness of the medication?
- A. Activated partial thromboplastin time (aPTT)
- B. Prothrombin time (PT) and international normalized ratio (INR)
- C. Platelet count
- D. Erythrocyte sedimentation rate (ESR)
Correct answer: B
Rationale: Prothrombin time (PT) and international normalized ratio (INR) are the laboratory values used to monitor the effectiveness of warfarin therapy. These values help ensure that the client is within the therapeutic range for anticoagulation. PT measures the time it takes for blood to clot, while INR standardizes PT results to minimize variations between laboratories. Monitoring these values is crucial to prevent complications such as bleeding or clot formation. Activated partial thromboplastin time (aPTT) (Choice A) is more commonly used to monitor heparin therapy. Platelet count (Choice C) assesses the number of platelets in the blood and is not specific to warfarin therapy. Erythrocyte sedimentation rate (ESR) (Choice D) is a non-specific marker of inflammation and is not used to monitor the effectiveness of warfarin therapy.
2. Which of the following is an early indication that a tracheostomy client requires suctioning?
- A. Bradycardia
- B. Irritability
- C. Hypotension
- D. Decreased respiratory rate
Correct answer: B
Rationale: Irritability is indeed an early sign that a tracheostomy client may require suctioning. When a tracheostomy client becomes irritable, it can indicate that there is a need for suctioning to clear the airway. Bradycardia (choice A) refers to a slow heart rate and is not typically a direct indication for suctioning. Hypotension (choice C) indicates low blood pressure and is not specifically related to the need for suctioning. Decreased respiratory rate (choice D) can be a sign of respiratory distress, but irritability is a more direct and early indication of the need for suctioning in a tracheostomy client.
3. A nurse is contributing to the plan of care for a client who has a chest tube connected to a closed drainage system. Which of the following interventions should the nurse include?
- A. Clamp the chest tube
- B. Maintain the drainage below the level of the chest
- C. Elevate the chest tube above chest level
- D. Avoid frequent dressing changes
Correct answer: B
Rationale: The correct intervention for a client with a chest tube connected to a closed drainage system is to maintain the drainage below the level of the chest. This position allows proper drainage of fluids and helps prevent complications such as backflow of blood or fluids into the chest cavity. Clamping the chest tube (Choice A) is incorrect as it can lead to a tension pneumothorax. Elevating the chest tube above chest level (Choice C) is also incorrect because it can impede proper drainage. Avoiding frequent dressing changes (Choice D) is important to prevent introducing infection, but it is not directly related to the position of the drainage system.
4. Which of the following medications is commonly used to treat attention deficit hyperactivity disorder (ADHD)?
- A. Sertraline
- B. Diazepam
- C. Methylphenidate
- D. Clozapine
Correct answer: C
Rationale: Methylphenidate is the correct answer. It is a stimulant medication commonly used to treat ADHD. Methylphenidate works by increasing the activity of certain chemicals in the brain that are involved in attention and impulse control. Sertraline is an antidepressant used for depression, anxiety, and other conditions, not ADHD. Diazepam is a benzodiazepine mainly prescribed for anxiety, muscle spasms, and seizures, not ADHD. Clozapine is an antipsychotic medication used for schizophrenia when other medications are ineffective, not for ADHD.
5. Where does the absorption of most nutrients occur?
- A. Large intestine.
- B. Small intestine.
- C. Stomach.
- D. Mouth.
Correct answer: B
Rationale: The absorption of most nutrients occurs in the small intestine. This is where digested food is broken down further and absorbed into the bloodstream through the intestinal walls. The large intestine primarily absorbs water and electrolytes, while the stomach mainly aids in digestion by breaking down food with gastric juices. The mouth is responsible for the initial mechanical breakdown of food through chewing and the enzymatic action of saliva, but absorption does not occur there.
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