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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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
The correct answer is choice B. Increase exercise.
Exercise can help stimulate bowel movements and prevent constipation, which is a common side effect of opioid medications.
Exercise can also improve blood circulation, reduce stress, and enhance mood, which can benefit clients who have chronic pain.
Choice A is wrong because decreasing insoluble fiber intake can worsen constipation.
Insoluble fiber adds bulk to the stool and helps it pass more easily through the colon.
Clients who take opioid medications should increase their intake of insoluble fiber from sources such as whole grains, fruits, vegetables, nuts, and seeds.
Choice C is wrong because drinking less water can lead to dehydration and hardening of the stool, which can make it more difficult to pass.
Clients who take opioid medications should drink plenty of water to keep the stool soft and moist.
Choice D is wrong because taking a laxative every day can cause dependence, tolerance, and electrolyte imbalance.
Laxatives should be used only as a last resort and under the guidance of a health care provider.
Clients who take opioid medications should try other methods of preventing constipation first, such as increasing exercise, fiber, and water intake.
Correct Answer is C
Explanation
The correct answer is choice C. Administering potassium via IV bolus is an example of malpractice in nursing.
This is because potassium is a medication that can cause cardiac arrest if given too quickly or in high doses. A nurse who administers potassium via IV bolus is not providing the standard of care that a similarly trained nurse would have offered under the same circumstances.
This could result in harm or death to the patient.
Choice A is wrong because placing a yellow bracelet on a client who is at risk for falls is not malpractice, but rather a safety measure.
A yellow bracelet indicates that the client needs assistance with mobility and should not be left alone. This is a common practice in many health care facilities to prevent falls and injuries.
Choice B is wrong because leaving a nasogastric tube clamped after administering oral medication is not malpractice, but rather a mistake.
A nasogastric tube is a tube that goes through the nose and into the stomach to deliver nutrition or medication.
It should be unclamped after giving oral medication to allow the medication to enter the stomach and prevent reflux or aspiration. However, this error does not rise to the level of malpractice unless it causes harm to the patient, such as vomiting, choking, or infection.
Choice D is wrong because documenting communication with a provider in the progress notes of the client’s medical record is not malpractice, but rather a good practice. A nurse
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