Cardiology I Flashcards
normal rate
60-100
normal rhythm
regular
normal PR intervals
120-200
normal QRS intervals
<120
normal QT intervals
<half of RR
normal P waves
+ in I, II, III
normal QRS axis
+QRS in I, II, aVF
sinus PR interval
P and QRS always together, PR>120
sinus P waves
+ in I, II, III
tachycardia rate
> 100
bradycardia rate
<60
long PR
> 200
short PR
<120
wide QRS
> 120
long QT
> 44, more than half of RR interval
right axis deviation (RVH, PE, lat. MI, etc)
-QRS in I
left axis deviation (LVH, LBBB, inf. MI, etc)
-QRS in II, aVF
right axis deviation differential
RVH, PE, lat. MI
left axis deviation differential
LVH, LBBB, inf. MI
RAE P wave
Peaked (>2.5 mm). Can also mean hypokalemia.
LAE P wave
Bifid!
right ventricular hypertrophy QRS
R>S in V1