Week 4 - EKG, Arrhythmias Flashcards
What EKG rhythm would you consider using atropine?
When HR slow…
Sinus bradycardia
Mobitz II 2nd degree heart block
Complete heart block
What medication class would you consider for treating arrhythmias with high HR?
B-blocker
How would you treat unstable SVT?
Synchronized cardioversion
How would you treat stable SVT?
Vagal maneuvers
Adenosine
How would you treat ventricular fibrillation?
ACLS - compressions, defibrillate
What does P wave represent?
atrial depolarization
What does QRS complex represent?
ventricular depolarization
What does T wave represent?
ventricular repolarization
What does PR interval represent?
The time between depolarization of SA node to onset of ventricular depolarization
What does QRS duration represent?
Time for ventricular depolarization.
Normal 0.06-0.10 secs
What does QT interval represent?
The time it takes for ventricles to depolarize to the beginning of repolarization.
What does ST segment represent?
The time between ventricles finishing depolarization and beginning repolarization.
What are some causes of ST segment elevation?
acute MI
pericarditis
L ventricular hypertrophy
What are some causes of ST segment depression?
Myocardial ischemia or infarction
What are peaked T waves associated with?
Hyperkalemia
