SVTs Flashcards
Atrial Flutter is characterized by how many beats per min?
100-150
Classic sign on EKG is “sawtooth” pattern
Atrial flutter
Signature tachycardia associated with COPD patients
Multifocal Atrial Tachycardia
SVT that can also be associated with digoxin toxicity.
MFA Tachy
What are the 10 risk factors associated with Afib?
I SMART CHAP: inflammation, surgery, meds, atherosclerotic CAD, rheumatic heart disease, thyrotoxicosis, CHD, HTN, R-OH, PE
How does digoxin work? IOW, what does it inhibit?
NA+ K+ ATPase pump
What is the main way to treat digoxin toxicity?
correct electrolyte imbalance should be primary step; in severe cases can use digibind.
True or False: Atrial Flutter is LESS common than AFib
True
Atrial Flutter is commonly seen amongst which patient population?
pts with structural heart disease but also pts with COPD
Per Lau, what is the DOC for tx of both Afib and Aflutter?
amiodarone
What is the most effective therapy treatment for multifocal atrial tachycardia?
tx of the underlying lung disease
What is the characteristic EKG finding for MF Atrial tachy?
varying p wave morphology (AT LEAST 3 need to be present to make dx) and markedly irregular PP intervals.
The dx for MF Atrail tachy is almost exactly the same as wandering atrial pacemaker. What is the differentiating factor?
wandering atrial pacemaker is HR is normal (between 60 and 100) and NOT trachycardic
What is the one SVT in which cardioversion is really just ineffective and should not be used?
MAT
Irregularly irregular rhythm with irregular RR intervals and no identifiable P wave
Afib
What are the three things you want to do in terms of the treatment of Afib?
correct rate and rhythm, then add anticoagulants
In terms of the treatment of chronic Afib, what test would you want to do?
echo to check to any structural changes in the heart - most specifically in the atrium
What is the structural heart change associated with Afib?
Left atrial enlargement
When you see Left Atrial Enlargement, what murmur should you automatically think of?
Mitral Stenosis
What is the common example for paroxysmal Afib?
alcohol induced Afib.
What is the difference between acute and paroxysmal Afib?
acute is a sudden onset; paroxysmal is an onset that occurs and we don’t know when or why.
Which is more dangerous - acute, chronic or paroxysmal Afib?
paroxysmal; often these patients will die suddenly
Patient with paroxysmal Afib dies suddenly, what is the most likely cause of death?
PE
What is the first line therapy for acute Afib?
reduce the rate! must get it below 100 beats per minute.
