The nurse identifies the following rhythm on the cardiac monitor. Which treatment modality will the nurse anticipate for this client?

Radiofrequency ablation

Administration of amiodarone

insertion of a pacemaker

Administration of adenosine

Answer and Explanation

The Correct Answer is C

A. Radiofrequency ablation: This is used to treat tachyarrhythmias such as atrial fibrillation, atrial flutter, or supraventricular tachycardia (SVT). The ECG shown does not demonstrate any tachycardic rhythm rather, it shows a bradyarrhythmia with dropped QRS complexes, which suggests a conduction block, not a reentrant circuit.

B. Administration of amiodarone: Amiodarone is primarily used for ventricular arrhythmias or atrial fibrillation. It is not effective in treating bradyarrhythmias or heart blocks such as those seen in this rhythm strip.

C. Insertion of a pacemaker: The rhythm strip shows intermittent dropped QRS complexes with consistent P waves—this is indicative of second-degree AV block, Mobitz II. This type of conduction block can progress to complete heart block and is often treated with the insertion of a permanent pacemaker to maintain cardiac output.

D. Administration of adenosine: Adenosine is used to terminate SVT by temporarily blocking AV node conduction. It is contraindicated in heart blocks, especially Mobitz II or third-degree AV block, because it can worsen the block and cause asystole.

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Correct Answer is ["200"]

Explanation

Volume ordered is 1 L.

Convert the total volume to milliliters (mL)

1 L = 1000 mL.

Total volume in mL = 1 L × 1000 mL/L = 1000 mL

Total infusion time = 5 hours

Calculate the infusion rate in milliliters per hour (mL/hr).

Infusion rate (mL/hr) = Total volume (mL) / Total infusion time (hours)

= 1000 mL / 5 hours

= 200

The appropriate setting is 200 mL/hr.

A. the P-P and R-R distances are equal and regular B. the rhythm rate using a 3-second strip C. the duration of the U waves D. there is a QRS complex after each P wave E. P waves are present, upright and rounded

Correct Answer is ["A","B","D","E"]

Explanation

A. The P-P and R-R distances are equal and regular: Equal and regular spacing between P-P and R-R intervals indicates that both atrial and ventricular rhythms are regular. This is a fundamental aspect of rhythm interpretation, helping to distinguish between regular and irregular rhythms such as atrial fibrillation or sinus arrhythmia.

B. The rhythm rate using a 3-second strip: Assessing the heart rate using a 3-second or 6-second ECG strip helps determine whether the rhythm is bradycardic, tachycardic, or within normal limits, which is crucial for accurate rhythm classification.

C. The duration of the U waves: U waves are typically small and follow the T wave. Although their presence can suggest conditions like hypokalemia, they are not routinely assessed in basic rhythm identification. Evaluating U wave duration is more relevant in electrolyte imbalance analysis than in identifying rhythm type.

D. There is a QRS complex after each P wave: A consistent QRS following every P wave indicates effective conduction from the atria to the ventricles. Each atrial depolarization (P wave) should be followed by a ventricular depolarization (QRS complex) if the signal is being conducted properly through the AV node. This finding supports a diagnosis of sinus rhythm and helps rule out AV blocks, where conduction may be delayed or blocked entirely.

E. P waves are present, upright and rounded: P waves that are upright and rounded in lead II suggest the electrical impulse is originating from the SA node. Their presence and morphology are essential criteria for identifying sinus rhythm and differentiating it from atrial arrhythmias like flutter or fibrillation.

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The nurse identifies the following rhythm on the cardiac monitor. Which treatment modality will the nurse anticipate for this client?

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Naxlex Comprehensive Predictor Exams

A post-op client is to receive the following: D5%W/0.45% NS 1 L to infuse over 5 hours. What is the appropriate setting on an infusion pump in milliliters per hour? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Correct Answer is ["200"]

Explanation

To properly identify a cardiac rhythm, the nurse will determine if the client's rhythm contains the following factors: (Select All that Apply.)

Correct Answer is ["A","B","D","E"]

Explanation

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