Bradycardias
AV node slowing, PR interval >0.2 (larger than one large box or 5 small ones)
What is 1 degree AV block
sawtooth appearance
Atrial flutter
P wave before QRS complex, narrowed QRS complex; rarely treated
PAC
No correlation
rate control and consider anticoagulation; then consider rhythm control
what is treatment for AFib
P waves march through at constant rate; PR interval stays constant and then QRS drops out of nowhere
What is 2nd degree AV block type II
Short PR (<.12) and prolonged QRS (>.12) with delta wave
Wolfe-Parkinson White
Wide QRS with possible R on T phenomenon
PVC
Peaked T waves with widened QRS
hyperkalemia
Consider event recorder/Holter monitor with eventual pacemaker
treatment for SSS
No coordination at all between P waves and QRS complexes
What is 3rd degree AV block
Presents one of two ways:
PAUSE followed by normal function (sinus arrest, SA exit block)
Tachycardia PAUSE bradycardia
Sick sinus syndrome/Tachycardia-bradycardia syndrome
Prolonged QT interval with twisting appearance
Torsades de pointe
Prolonged QT
hypocalcemia
Vagal maneuvers (valsalva, blow through straw, ice to face) then adenosine (rapidly acting; SE: CP, flushing)
what is SVT/PSVT
Progressive elongation of PR interval until QRS is dropped
What is 2nd degree AV block type 1 (Wenckebach)
No discernible P waves
what is atrial fibrillation
Widened QRS that is either monomorphic or polymorphic and sustained or non-sustained
what is ventricular tachycardia
Flattened T waves, U waves
what is hypokalemia
PROCANIMIDE always safe
what is treatment for WPW
Treatment for 1st degree, 2nd degree, and 3rd degree AV blocks
1st degree - None, atropine or epi if needed
2nd degree - Atropine for Wenckebach if symptomatic, pacemaker for type 2
3rd degree - pacemaker due to high risk of SCD
Regular rhythm rate 150-250 with a narrow QRS complex and absence of normal P waves
Cove-shaped ST segment elevation >2mm with inverted T wave OR ST elevation >2mm w trough in it 1 mm deep (saddleback)
what is brugada syndrome
shortened QT
what is hypercalcemia
IV magnesium sulfate and consider switching to different antidepressant
what is treatment for torsades de pointes