A nurse is reviewing the results of electrocardiography monitoring for a client who has atrial fibrillation. Which of the following findings should the nurse expect?
1:1 ratio of P to QRS waves
Absence of P waves
Prolonged PR interval
Prolonged QT interval
The Correct Answer is B
A. 1:1 ratio of P to QRS waves: Atrial fibrillation is characterized by chaotic atrial electrical activity, leading to the absence of distinct P waves. A 1:1 ratio of P to QRS waves is seen in normal sinus rhythm, not atrial fibrillation.
B. Absence of P waves: Atrial fibrillation causes rapid, disorganized atrial depolarization, resulting in the loss of identifiable P waves on ECG. Instead, fibrillatory waves are seen, and the ventricular response is irregularly irregular.
C. Prolonged PR interval: The PR interval represents the time between atrial and ventricular depolarization. In atrial fibrillation, there is no coordinated atrial depolarization, making the PR interval unmeasurable rather than prolonged.
D. Prolonged QT interval: A prolonged QT interval is associated with conditions like electrolyte imbalances, certain medications, and congenital syndromes, but it is not a typical feature of atrial fibrillation.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Contact your pharmacy to inquire about a different medication: Pharmacies may offer generic alternatives, but they cannot change a prescription without provider authorization. A social worker can explore financial assistance programs, which is a more comprehensive solution.
B. I can arrange for a social worker to talk with you before you leave: Social workers assist clients in finding resources such as medication assistance programs, prescription discount plans, or community aid. This ensures the client can access their medication without financial strain.
C. You should ask your provider to prescribe a cheaper medication: While discussing cost-effective alternatives with the provider is an option, it does not directly address the client’s financial concerns. A social worker can provide broader support beyond just switching medications.
D. I can contact the occupational therapist to schedule a home visit: Occupational therapy focuses on improving daily function and independence. It does not address financial concerns related to medication affordability, making this option inappropriate for the situation.
Correct Answer is A
Explanation
A. Apply an ice pack to the client's knee: Ice application helps reduce pain and inflammation by decreasing swelling around the surgical site. Cold therapy also numbs nerve endings, providing pain relief for clients after knee arthroplasty.
B. Place pillows under the client's knee: Elevating the knee with pillows can promote flexion contractures and is generally avoided after knee arthroplasty. Instead, the leg should be kept extended and supported to encourage proper alignment and prevent complications.
C. Perform range-of-motion exercises to the client's knee: While range-of-motion exercises are important for rehabilitation, they should be done at scheduled times and not during episodes of acute pain, as they could exacerbate discomfort.
D. Gently massage the area around the client's incision: Massaging near the incision site is not recommended, as it could disrupt healing tissue, increase pain, and pose a risk of infection.
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