NURS 143-Module 3 Dysrhythmia's Questions With Complete Solutions

NURS 143-Module 3 Dysrhythmia's Questions With
Complete Solutions

6 Steps to Identifying Cardiac Rhythms Correct Answers 1.
Determine regularity of rhythm
2. Determine rate
3. Assess P wave & morphology
4. Assess P to QRS relationship
5. Determine interval duration & QRS morphology
6. Identify abnormalities

Assess P to QRS relationship Correct Answers • 1 P for every
QRS

Assess P wave & morphology Correct Answers • Present or
absent?
• Normal or abnormal morphology?

Atrial Fibrillation Correct Answers Rhythm: Irregular
Rate: Very fast (> 350 bpm) for Atrial, but ventricular rate may
be slow, normal or fast
P Wave: Absent - erratic waves are present
PR Interval: Absent
QRS: Normal but may be widened if there are conduction delays
Notes: P wave missing, replaced by a fine wavy wave

Atrial Fibrillation Meds: Amiodarone Correct Answers O
Antiarrhythmic, acts on action potential phase 3 (re-polarization)
O long half life
O Liver metabolized
O Large SE & multiple potential drug-drug interactions

, O Potassium channel blocker

Atrial Fibrillation Meds: Warfarin Correct Answers O
Anticoagulant, inhibits vitamin K dependent coagulation factors
O Reduces risk of thrombi/emboli formation
O Absorption can be affected by several commonly used
medications (i.e antibiotics)

Atrial Fibrillation: Assessment Correct Answers - irregularly
irregular pulse
- possibly CP, fatigue, weakness, SOB, syncope, hypotension

Atrial Fibrillation: Etiology Correct Answers - valvular disease
- atherosclerosis
- thyrotoxicosis
- cor pulmonale

Atrial Fibrillation: Meds Correct Answers 1. Amiodarone
2. Warfarin
3. Beta-Blocker
4. Calcium channel-Blocker
5. Digoxin

Atrial Fibrillation: Treatment Correct Answers O aimed at
regulating rate.
O Digoxin, amiodarone, diltiazem, metoprolol, atenolol,
propranolol (olol Beta Blockers)
O Coumadin for chronic or acute atrial fib

Conduction Abnormalities Correct Answers Supraventricular
Ventricular