ECG exam NYU langone UPDATED ACTUAL Questions and CORRECT Answers
you cant have a ___ without electricty contraction
____ is the cells ability to spontaneously automaticity
generate impluses
_____ Cell ability to respond to an impulse excitability
_____ Cells ability to transmit impulse Conductivity
___ cells contract myocardial
step 1: the p wave is caused by _____ ______ atrial depolarization
initiated by the SA node
step 2: with atrial depolarization complete, AV node
the impulse is delayed at the ___ _____
step 3 _______ begins at apex causing the ventricular depolarization
QRS complex. atrial repolarization occurs
step 4 ______ is complete ventricular depolarization
step 5: the T wave is caused by ______ ______ ventricular repolarization
step 6 _______ is complete ventricular repolarization
implulse rate 60-100
SA node :__ to ___ 40-60
AV node: __ to ___ 20-40
ventricles: ___ to ____
what is the pathway of the electrical SA node (pacemaker) to AV node to AV bundle (bundle of his) to right and left
conduction system? bundle branches to purkinje fibers
What is the refractory period? a period of inactivity after a neuron has fired
, during a refractory period (absolute or R on T phenomenon, fatal dysrhythmias
relative) if there is an implulse this will
happen _____ sending your patient to _______
_______
Normal PR interval 0.12-0.20 seconds (3-5 small boxes)
Normal QRS complex less than 0.12 seconds
NSR
regular
60-100
p wave normal
PR int: 0.12-0.20 secs
QRS: < 0.12 secs
Sinus tachy
regular
101-160
p wave normal
PR int: 0.12-0.20 secs
QRS: < 0.12 secs
Normal sympathetic tone, fever, exercise, sinus tachy
hypotension, PE, MI, stress, anxiety are the
causes for ____ ____
treat underlying cause (pain, fever, etc) and increased o2 requirement is a warning
how do you treat sinus tachy?
sign
sinus brady
regular
<60
p wave normal
PR int: 0.12-0.20 secs
QRS: <0.12 secs
Increased vagal tone, inferior wall MI, sinus brady
hypothyroidism, drugs (beta blockers,
digoxin, morphine, hypothyroidism) can be
a normal finding are causes of _____ _____
how do you treat sinus brady? only if symptomatic-stove meds and give epi or atropine
sinus arrhythmia
irregular
60-100
p wave normal
PR int: 0.12-0.20
QRS int: <0.12 sec
what causes sinus arrhythmia? and whats normal variation with respiratory cycle, no tx
the tx?
sinus block
usually regular, irregular during pause
60-100
normal p wave
normal pr and qrs int
you cant have a ___ without electricty contraction
____ is the cells ability to spontaneously automaticity
generate impluses
_____ Cell ability to respond to an impulse excitability
_____ Cells ability to transmit impulse Conductivity
___ cells contract myocardial
step 1: the p wave is caused by _____ ______ atrial depolarization
initiated by the SA node
step 2: with atrial depolarization complete, AV node
the impulse is delayed at the ___ _____
step 3 _______ begins at apex causing the ventricular depolarization
QRS complex. atrial repolarization occurs
step 4 ______ is complete ventricular depolarization
step 5: the T wave is caused by ______ ______ ventricular repolarization
step 6 _______ is complete ventricular repolarization
implulse rate 60-100
SA node :__ to ___ 40-60
AV node: __ to ___ 20-40
ventricles: ___ to ____
what is the pathway of the electrical SA node (pacemaker) to AV node to AV bundle (bundle of his) to right and left
conduction system? bundle branches to purkinje fibers
What is the refractory period? a period of inactivity after a neuron has fired
, during a refractory period (absolute or R on T phenomenon, fatal dysrhythmias
relative) if there is an implulse this will
happen _____ sending your patient to _______
_______
Normal PR interval 0.12-0.20 seconds (3-5 small boxes)
Normal QRS complex less than 0.12 seconds
NSR
regular
60-100
p wave normal
PR int: 0.12-0.20 secs
QRS: < 0.12 secs
Sinus tachy
regular
101-160
p wave normal
PR int: 0.12-0.20 secs
QRS: < 0.12 secs
Normal sympathetic tone, fever, exercise, sinus tachy
hypotension, PE, MI, stress, anxiety are the
causes for ____ ____
treat underlying cause (pain, fever, etc) and increased o2 requirement is a warning
how do you treat sinus tachy?
sign
sinus brady
regular
<60
p wave normal
PR int: 0.12-0.20 secs
QRS: <0.12 secs
Increased vagal tone, inferior wall MI, sinus brady
hypothyroidism, drugs (beta blockers,
digoxin, morphine, hypothyroidism) can be
a normal finding are causes of _____ _____
how do you treat sinus brady? only if symptomatic-stove meds and give epi or atropine
sinus arrhythmia
irregular
60-100
p wave normal
PR int: 0.12-0.20
QRS int: <0.12 sec
what causes sinus arrhythmia? and whats normal variation with respiratory cycle, no tx
the tx?
sinus block
usually regular, irregular during pause
60-100
normal p wave
normal pr and qrs int
