A nurse on a telemetry unit is assessing a client who is receiving continuous cardiac monitoring. The client's heart rate is 69/min and the PR interval is 0.24 seconds. The nurse should interpret this finding as which of the following cardiac rhythms?
Atrial fibrillation
First-degree AV block
Premature ventricular contraction
Sinus bradycardia
The Correct Answer is B
The correct answer is B.
Choice A reason: Atrial fibrillation is characterized by a rapid, irregular heartbeat and an absence of distinct P waves on the ECG, which is not indicated by the information provided.
Choice B reason: First-degree AV block is indicated by a prolonged PR interval without affecting the overall heart rate, aligning with the client’s PR interval of 0.24 seconds.
Choice C reason: Premature ventricular contraction would show an abnormal QRS complex on the ECG, which is not mentioned in the scenario.
Choice D reason: Sinus bradycardia is defined by a heart rate less than 60 bpm, which does not apply here as the client’s heart rate is 69/min, within the normal range of 60-100 bpm.
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Related Questions
Correct Answer is C
Explanation
The correct answer is choice C. Perform the procedure prior to meals.
This is because postural drainage involves positioning the child in different ways to help drain the mucus from the lungs.
If the child has a full stomach, this can cause nausea, vomiting, or aspiration. Therefore, the nurse should perform the procedure before meals or at least 1 hour after meals.
Choice A is wrong because the nurse should not hold the hand flat to perform percussions on the child.
Percussions are rhythmic clapping on the chest wall to loosen the mucus. The nurse should use a cupped hand to create a small air pocket that enhances the vibrations and prevents bruising.
Choice B is wrong because the nurse should not perform the procedure twice a day. The recommended frequency of postural drainage is 3 to 4 times a day, or more if needed, depending on the child’s condition and tolerance.
Choice D is wrong because the nurse should not administer a bronchodilator after the procedure.
A bronchodilator is a medication that relaxes and widens the airways, making it easier to breathe. The nurse should administer a bronchodilator before the procedure to enhance the effectiveness of postural drainage.
Correct Answer is A
Explanation
The correct answer is choice A. A client who has a hip fracture and a new onset of tachypnea.
This client has a high risk of developing a pulmonary embolism, which is a life-threatening condition that requires immediate intervention.
Tachypnea is a sign of respiratory distress and hypoxia, which can indicate a pulmonary embolism.
The nurse should assess this client first and notify the provider.
Choice B is wrong because a client who has diabetes mellitus and an HbA1c of 6.8% is wellcontrolled and does not need urgent attention.
The normal range for HbA1c is 4% to 6%, and the goal for diabetic clients is less than 7%.
Choice C is wrong because a client who has epidural analgesia and weakness in the lower extremities is expected to have some degree of motor impairment due to the medication.
The nurse should monitor the client’s sensation, movement, and pain level, but this is not a priority over choice A. Choice D is wrong because a client who has sinus arrhythmia and is receiving cardiac monitoring is not in immediate danger.
Sinus arrhythmia is a normal variation of heart rhythm that occurs with breathing.
The nurse should observe the client’s vital signs and cardiac rhythm, but this is not a priority over choice A.
The correct answer is choice A. A client who has a hip fracture and a new onset of tachypnea.
This client has a high risk of developing a pulmonary embolism, which is a life-threatening condition that requires immediate intervention.
Tachypnea is a sign of respiratory distress and hypoxia, which can indicate a pulmonary embolism.
The nurse should assess this client first and notify the provider.
Choice B is wrong because a client who has diabetes mellitus and an HbA1c of 6.8% is wellcontrolled and does not need urgent attention.
The normal range for HbA1c is 4% to 6%, and the goal for diabetic clients is less than 7%.
Choice C is wrong because a client who has epidural analgesia and weakness in the lower extremities is expected to have some degree of motor impairment due to the medication.
The nurse should monitor the client’s sensation, movement, and pain level, but this is not a priority over choice A. Choice D is wrong because a client who has sinus arrhythmia and is receiving cardiac monitoring is not in immediate danger.
Sinus arrhythmia is a normal variation of heart rhythm that occurs with breathing.
The nurse should observe the client’s vital signs and cardiac rhythm, but this is not a priority over choice A.
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