Atrial Dysrhythmia Exam Questions With Verified Answers
4 views 0 purchase
Course
Dysrhythmias
Institution
Dysrhythmias
Atrial Dysrhythmia Exam Questions
With Verified Answers
1. Originate from outside the SA node
2. Most common types of dysrhythmia
3. P waves: if present, differ from normal
4. QRS complex: should appear narrow and normal - answerCharacteristics of atrial
dysrhythmia
1. Enhanced automaticity
...
EXAM STUDY MATERIALS July 23, 2024 4:26 PM Atrial Dysrhythmia Exam Questions With Verified Answers 1. Originate from outside the SA node 2. Most common types of dysrhythmia 3. P waves: if present, differ from normal 4. QRS complex: should appear narrow and normal - answer✔✔Characteristics of atrial dysrhythmia 1. Enhanced automaticity 2. Circus reentry 3. After depolarization - answer✔✔Causatic mechanisms of atrial dysrhythmias 1. Most are benign with little effect on CO 2. Decreased CO can occur with loss of the atrial "kick" -Decreased CO —> Decreased BP —> Decreased tissue perfusion - answer✔✔Effects of atrial dysrhythmia 1. Early beats that arise from somewhere in the atria other than the SA node 2. Can originate from a single site or multiple sites 3. Not a true dysrhythmia 4. An abnormality that occurs with underlying sinus rhythm 5. An automaticity issue 6. Can serve as an early indicator of electrolyte abnormalities or heart failure - answer✔✔Characteristics of Premature Atrial Complexes 1. Commonly cause no symptoms 2. May predispose to other serious dysrhythmias 3. Can serve as an early indicator of ele ctrolyte abnormalities or heart failure - answer✔✔Effects of Premature Atrial Complexes EXAM STUDY MATERIALS July 23, 2024 4:26 PM 1. Rate: depends on underlying rhythm 2. Rhythm: Irregular due to early beat 3. P waves: P appears different from underlying rhythm, precede the early QRS complex 4. QR S complex: Normal 5. PR Interval: normal or shortened (PR interval) 6. ST segment: normal, isoelectric 7. T waves: normal 8. QT intervals: within normal limits 9. U waves: may or may not be present - answer✔✔ECG appearance of Premature Atrial Complexes 1. Generally do NOT require treatment 2. Frequent PAC's: treated with drugs that increase the atrial refractory time -Beta Blockers -Calcium Channel Blockers - answer✔✔Treatments for Premature Atrial Complexes Bigeminy Premature Atrial Complex -trigeminy i f every three beats -quadgeminy if every four beats - answer✔✔Premature atrial complex that occurs every two beats 1. aka Multifocal atrial rhythm 2. Rhythm in which the pacemaker site shifts location 3. As often as beat to beat 4. Shifts between SA node, atria, and/or AV junction 5. Generally caused by the inhibitory vagal effect of respiration on the SA node and AV junction -With increased vagal stimulation, the SA node slows, allowing faster (briefly) pacemakers in the atria or AV junction to initiate t he heartbeat -After the vagal tone decreases, the SA node becomes the dominant pacemaker again - answer✔✔Wandering Atrial Pacemaker 1. Changing P wave morphology 2. Minimum of 3 P wave configurations are needed to diagnose
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Thebright. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.49. You're not tied to anything after your purchase.
