MAYO ECG EXAM
terminal conduction system of ventricles - ANSWERS-purkinje fibers
SA node rate - ANSWERS-60-100
Junctional Tissue rate - ANSWERS-40-60
Ventricular Tissue - ANSWERS-20-40
narrow QRS, rate >160 - ANSWERS-SVT
rate less than 40 beats per minute and has a wide QRS - ANSWERS-
Idioventricular rhythm
vfib, v tach, agonal, ventricular standstill - ANSWERS-lethal
every other p wave is blocked somewhere in the AV conduction
system - ANSWERS-second degree AV block 2:1 conduction
PR interval progressively lengthens on consecutively conducted beats
- ANSWERS-second degree av block type 1
, no p waves are blocked but AC conduction (PR time) is prolonged -
ANSWERS-first degree av block
some p waves are blocked from being conducted through to the
ventricle, the PR interval is constant on those that are conducted -
ANSWERS-second degree AV block type 2
atrial and ventricular activity are regular, pr intervals are variable -
ANSWERS-third degree AV block
Pathway of heart conduction - ANSWERS-SA node
Intra atrial pathway
AV node
Bundle of HIS
Right and Left Bundle Branches
Purkinje Fibers
1st degree AV block - ANSWERS-prolonged PR interval
2nd degree AV block type 1 - ANSWERS-PR interval long, longer,
drop
the drop is a P wave not followed by a QRS
2nd degree AV block type 2 - ANSWERS-Constant PRI w >.2,
random dropped QRS
terminal conduction system of ventricles - ANSWERS-purkinje fibers
SA node rate - ANSWERS-60-100
Junctional Tissue rate - ANSWERS-40-60
Ventricular Tissue - ANSWERS-20-40
narrow QRS, rate >160 - ANSWERS-SVT
rate less than 40 beats per minute and has a wide QRS - ANSWERS-
Idioventricular rhythm
vfib, v tach, agonal, ventricular standstill - ANSWERS-lethal
every other p wave is blocked somewhere in the AV conduction
system - ANSWERS-second degree AV block 2:1 conduction
PR interval progressively lengthens on consecutively conducted beats
- ANSWERS-second degree av block type 1
, no p waves are blocked but AC conduction (PR time) is prolonged -
ANSWERS-first degree av block
some p waves are blocked from being conducted through to the
ventricle, the PR interval is constant on those that are conducted -
ANSWERS-second degree AV block type 2
atrial and ventricular activity are regular, pr intervals are variable -
ANSWERS-third degree AV block
Pathway of heart conduction - ANSWERS-SA node
Intra atrial pathway
AV node
Bundle of HIS
Right and Left Bundle Branches
Purkinje Fibers
1st degree AV block - ANSWERS-prolonged PR interval
2nd degree AV block type 1 - ANSWERS-PR interval long, longer,
drop
the drop is a P wave not followed by a QRS
2nd degree AV block type 2 - ANSWERS-Constant PRI w >.2,
random dropped QRS
