Question

A patient with an acute myocardial infarction (MI) develops the following ECG pattern: atrial rate of 82 and regular; ventricular rate of 46 and regular; $\mathrm{P}$ wave and $\mathrm{QRS}$ complex are normal but there is no relationship between the $\mathrm{P}$ wave and the QRS complex. What dysrhythmia does the nurse identify this as and what treatment is expected? a. Sinus bradycardia treated with atropine b. Third-degree heart block treated with a pacemaker c. Atrial fibrillation treated with electrical cardioversion d. Type I second-degree AV block treated with observation

   A patient with an acute myocardial infarction (MI) develops the following ECG pattern: atrial rate of 82 and regular; ventricular rate of 46 and regular; $\mathrm{P}$ wave and $\mathrm{QRS}$ complex are normal but there is no relationship between the $\mathrm{P}$ wave and the QRS complex. What dysrhythmia does the nurse identify this as and what treatment is expected?
a. Sinus bradycardia treated with atropine
b. Third-degree heart block treated with a pacemaker
c. Atrial fibrillation treated with electrical cardioversion
d. Type I second-degree AV block treated with observation

Study Guide for Medical-Surgical Nursing: Assessment and Management of Clinical Problems

Sharon L. Lewis RN… 9th Edition

Chapter 36, Problem 12

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Step 1

- Ventricular rate of 46 and regular: This means that the ventricles are depolarizing at a rate of 46 beats per minute, and the intervals between each ventricular depolarization are consistent. - P wave and QRS complex are normal: This indicates that the Show more…

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A patient with an acute myocardial infarction (MI) develops the following ECG pattern: atrial rate of 82 and regular; ventricular rate of 46 and regular; $\mathrm{P}$ wave and $\mathrm{QRS}$ complex are normal but there is no relationship between the $\mathrm{P}$ wave and the QRS complex. What dysrhythmia does the nurse identify this as and what treatment is expected? a. Sinus bradycardia treated with atropine b. Third-degree heart block treated with a pacemaker c. Atrial fibrillation treated with electrical cardioversion d. Type I second-degree AV block treated with observation

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