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A 9-year-old received a short arm cast for a right radius. To relieve itching under the child's cast, which instructions should the nurse provide to the parents?
- A. Blow cool air from a hair dryer under the cast
- B. Twist the cast back and forth
- C. Shake powder into the cast
- D. Push a pencil under the cast edge
Correct Answer: A
Rationale: The correct answer is A: Blow cool air from a hair dryer under the cast. This method helps to relieve itching by providing airflow without causing damage to the cast or skin. It is safe and effective.
Choice B: Twisting the cast back and forth may cause discomfort or injury to the child's arm.
Choice C: Shaking powder into the cast can create a mess and may lead to skin irritation or infection.
Choice D: Pushing a pencil under the cast edge can cause damage to the skin or lead to complications.
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A 2-year-old boy with short bowel syndrome has progressed to receiving enteral feedings only. Today his stools are occurring more frequently and have a more liquid consistency. His temperature is 102.2°F and he has vomited twice in the past four hours. Which assessment finding indicates that the child is becoming dehydrated?
- A. Occult blood in the stool
- B. Abdominal distention
- C. Elevated urine specific gravity
- D. Hyperactive bowel sounds
Correct Answer: C
Rationale: Step 1: Elevated urine specific gravity indicates increased concentration of urine, a sign of dehydration.
Step 2: In dehydration, the body conserves water, leading to concentrated urine.
Step 3: The child's symptoms (increased stools, liquid consistency, fever, vomiting) suggest dehydration.
Step 4: Other choices (A: occult blood, B: distention, D: hyperactive bowel sounds) are not specific to dehydration.
Summary: Elevated urine specific gravity is key as it directly reflects dehydration, unlike the other choices which are not specific indicators of dehydration.
A client who has a new prescription for warfarin (Coumadin) asks the nurse how the medication works. What explanation should the nurse provide?
- A. It dissolves blood clots
- B. It prevents the blood from clotting
- C. It thins the blood
- D. It decreases the risk of infection
Correct Answer: B
Rationale: The correct answer is B: It prevents the blood from clotting. Warfarin works as an anticoagulant by inhibiting the production of certain clotting factors in the liver. This prevents the formation of blood clots and reduces the risk of conditions like deep vein thrombosis or stroke. Choice A is incorrect because warfarin does not dissolve existing blood clots but prevents new ones. Choice C is misleading as it does not actually "thin" the blood but affects its ability to clot. Choice D is unrelated to the mechanism of action of warfarin.
The nurse is planning care for a client who is receiving phenytoin (Dilantin) for seizure control. Which intervention is most important to include in this client's plan of care?
- A. Monitor serum calcium levels
- B. Obtain a baseline electrocardiogram
- C. Implement seizure precautions
- D. Encourage a low-protein diet
Correct Answer: C
Rationale: The correct answer is C. Implement seizure precautions. This is the most important intervention because phenytoin is an antiepileptic drug, and its purpose is to control seizures. Seizure precautions aim to prevent injury during a seizure, ensuring the client's safety. Monitoring serum calcium levels (A) is not directly related to phenytoin therapy. Obtaining a baseline electrocardiogram (B) is not a priority unless there are specific cardiac concerns. Encouraging a low-protein diet (D) is not necessary for phenytoin therapy.
The nurse is caring for a client who is receiving a continuous intravenous infusion of heparin. Which laboratory value should the nurse monitor to evaluate the effectiveness of the therapy?
- A. Platelet count
- B. Prothrombin time (PT)
- C. Partial thromboplastin time (PTT)
- D. Hemoglobin level
Correct Answer: C
Rationale: The correct answer is C: Partial thromboplastin time (PTT). PTT measures the effectiveness of heparin therapy by assessing the clotting time. With heparin being an anticoagulant, monitoring PTT helps ensure the client is within the therapeutic range to prevent clot formation. A - Platelet count assesses risk of bleeding, not heparin effectiveness. B - Prothrombin time (PT) is used to monitor warfarin therapy, not heparin. D - Hemoglobin level monitors for anemia, not heparin effectiveness.
A client with chronic obstructive pulmonary disease (COPD) is receiving oxygen at 2 liters per minute by nasal cannula. The client develops respiratory distress and the nurse increases the oxygen to 4 liters per minute. Shortly afterward, the client becomes lethargic and confused. What action should the nurse take first?
- A. Reposition the nasal cannula
- B. Lower the oxygen rate
- C. Encourage the client to cough and deep breathe
- D. Monitor the client's oxygen saturation level
Correct Answer: B
Rationale: The correct answer is B: Lower the oxygen rate. Increasing oxygen flow too quickly can lead to oxygen toxicity in COPD patients, causing symptoms like lethargy and confusion. Lowering the oxygen rate will help alleviate the symptoms and prevent further harm. Repositioning the nasal cannula (choice A) is not the priority in this situation. Encouraging coughing and deep breathing (choice C) may not address the immediate issue of oxygen toxicity. Monitoring oxygen saturation (choice D) is important but should follow lowering the oxygen rate to address the current symptoms.