The nurse is caring for a client with a permanent pacemaker. The client's monitor shows a pacemaker spike prior to the p wave. What would be the nurse's best action?

Increase the pacemaker sensitivity

Document that the pacemaker is regular

Set the pacemaker to the asynchronous mode

Document that the atria are being paced

Answer and Explanation

The Correct Answer is D

A. Increase the pacemaker sensitivity: Adjusting pacemaker sensitivity is a technical function typically managed by a cardiologist or device technician. There is no indication from the information provided that the pacemaker is under- or over-sensing, so no adjustment is warranted.

B. Document that the pacemaker is regular: While the pacemaker may be functioning regularly, this statement is vague and does not accurately describe the observed pacing activity. The key observation is the spike occurring before the P wave, which requires more specific documentation.

C. Set the pacemaker to the asynchronous mode: Asynchronous pacing means the pacemaker fires at a set rate regardless of the patient's intrinsic rhythm and is generally reserved for specific situations such as during surgery or when interference with sensing is suspected. There is no evidence of pacemaker malfunction or need to override sensing in this scenario.

D. Document that the atria are being paced: A pacemaker spike immediately before the P wave indicates atrial pacing. This means the pacemaker is stimulating the atria, leading to atrial depolarization. This is the appropriate interpretation and should be documented clearly.

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Correct Answer is B

Explanation

A. Run of premature ventricular beats: While adenosine can occasionally provoke brief ventricular ectopy, this is not its primary or most expected effect. Premature ventricular contractions may occur transiently but are not the hallmark response to this medication.

B. Short period of asystole: Adenosine briefly blocks AV node conduction and can interrupt re-entry pathways, often resulting in a short period of asystole lasting a few seconds. This is an expected effect and reflects the drug’s mechanism in terminating supraventricular tachycardia by interrupting the reentrant pathway.

C. Brief seizure episode: Adenosine does not typically cause seizures. It acts primarily on cardiac tissue and has no significant pro-convulsant effects. A seizure would be an atypical and concerning adverse reaction rather than an expected response.

D. Dramatic increase in blood pressure: Adenosine causes transient vasodilation and may lead to a brief drop in blood pressure or flushing. A dramatic increase in blood pressure would not be expected and could suggest an alternate diagnosis or drug reaction.

A. Blood pressure reading of 120/80 B. Urine output 30 mL for one hour C. Serum sodium level is 135 mEq/L (135-145) D. Respiratory rate 16 per minute

Correct Answer is D

Explanation

A. Blood pressure reading of 120/80: While a normal blood pressure is desirable, this value alone does not indicate improvement in fluid overload or pulmonary symptoms. It may remain normal even if respiratory status worsens or fails to improve.

B. Urine output 30 mL for one hour: Although urine output is an important measure of diuretic effectiveness, 30 mL/hr is the minimum acceptable rate, not necessarily a strong indicator of clinical improvement. More robust diuresis may be expected following IV furosemide.

C. Serum sodium level is 135 mEq/L (135–145): A normal sodium level reflects stable electrolyte status but does not directly indicate improvement in pulmonary congestion or dyspnea. Sodium may be affected by many factors unrelated to heart failure symptom relief.

D. Respiratory rate 16 per minute: A decrease in respiratory rate from 26 to 16 suggests improved oxygenation, reduced pulmonary congestion, and decreased work of breathing. It is the most direct and clinically relevant indicator of symptomatic improvement in this context.

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The nurse is caring for a client with a permanent pacemaker. The client's monitor shows a pacemaker spike prior to the p wave. What would be the nurse's best action?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A client is to receive an intravenous dose of adenosine. What immediate response to this medication should the nurse expect?

Correct Answer is B

Explanation

The client with heart failure exhibits bibasilar crackles, dyspnea and a respiratory rate of 26/min. The physician prescribes furosemide 40 mg IV and enalapril 5 mg PO. Which parameter would the nurse use to best evaluate if the client is responding to these medications?

Correct Answer is D

Explanation

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