DYSRHYTHMIA STUFF AHN 447 UPDATED WITH 100% VERIFIED
SOLUTIONS!!
We want the sinus node pacing the heart.
Depolarization- _______
Repolarization- ________ and refilling - (answer)Contraction; relaxing
At rest there is a _____ charge inside the cell and a positive charge outside the cell
Na+ is most plentiful ______ the cell and K+ is most plentiful inside the cell.
When the muscle depolarizes Na rushes ___ and K rushes ___ in a wave pattern - (answer)negative;
outside; in; out
For a cell to depolarize it must be ______ stimulated and the ions (K and Na) must change places.
Repolarization is the ions going back to their normal _____ state (K in and Na out)
This is a slower movement than depolarization (rapid movement)
Absolute refractory means excitability is ______ and we cannot stimulate it to depolarize -
(answer)electrically; resting; zero
Primary pace-maker is the SA node
-Normal rate is ___-____
The second pacemaker is the AV node
-Normal rate for AV node is ___-___
,DYSRHYTHMIA STUFF AHN 447 UPDATED WITH 100% VERIFIED
SOLUTIONS!!
The last pace maker is the purkinje fibers
-Rate of __-__ - (answer)60-100 ; 40-60; 20-40
P-wave= atrial depolarization
-Right at the end of diastole the atria contract "____ ____"
-30% of CO comes from atrial kick
AV node slows down the impulse for ______ filling.
The flat part is where atrial contraction occurs is also where the AV node is holding onto that impulse to
allow for ventricular filling
QRS= ventricular depolarization.
-As soon as they depolarize they have to contract whether they are full or not.
T-wave= ventricular repolarization. When the ions are going back to their original state.
There isn't an atrial repolarization because is hidden by the QRS. - (answer)atrial kick; ventricular
Oversized __ _____ means they have an infarct in the past - (answer)Q wave
Normal time intervals:
PR= ___-___
•Represents atrial depolarization and mechanical contraction of the atria
QRS= anything less than ____ seconds (<0.12 sec)
•Represents ventricular depolarization - (answer)0.12-0.20; less than 0.12
, DYSRHYTHMIA STUFF AHN 447 UPDATED WITH 100% VERIFIED
SOLUTIONS!!
If there is no QRS after a P wave then the conduction got blocked in the ___ node
For a NSR we have to have a p followed by QRS
In newly infarcted patients we don't want sinus tachycardia because the diastole doesn't have time to fill
the coronaries - (answer)AV
Hyperthyroidism - feel hot and sweaty
Excess t3 and t4 is causes the heart to beat fast and hard
___ ____ blocker to lower HR for these patients
Sepsis we will give BB too - (answer)BB 1 specific
Sinus tachy we treat the ______ of the tachycardia and not just give the BB in the reg population -
(answer)cause
Sinus bradycardia
-NSR except for slowed rate
-Coronary perfusion is really good here
-If it gets too low we lose CO
-Valsalva can cause this to slow the HR
-Vagus nerve is _________.
-Normal in a aerobic athlete. - (answer)parasympathetic
SOLUTIONS!!
We want the sinus node pacing the heart.
Depolarization- _______
Repolarization- ________ and refilling - (answer)Contraction; relaxing
At rest there is a _____ charge inside the cell and a positive charge outside the cell
Na+ is most plentiful ______ the cell and K+ is most plentiful inside the cell.
When the muscle depolarizes Na rushes ___ and K rushes ___ in a wave pattern - (answer)negative;
outside; in; out
For a cell to depolarize it must be ______ stimulated and the ions (K and Na) must change places.
Repolarization is the ions going back to their normal _____ state (K in and Na out)
This is a slower movement than depolarization (rapid movement)
Absolute refractory means excitability is ______ and we cannot stimulate it to depolarize -
(answer)electrically; resting; zero
Primary pace-maker is the SA node
-Normal rate is ___-____
The second pacemaker is the AV node
-Normal rate for AV node is ___-___
,DYSRHYTHMIA STUFF AHN 447 UPDATED WITH 100% VERIFIED
SOLUTIONS!!
The last pace maker is the purkinje fibers
-Rate of __-__ - (answer)60-100 ; 40-60; 20-40
P-wave= atrial depolarization
-Right at the end of diastole the atria contract "____ ____"
-30% of CO comes from atrial kick
AV node slows down the impulse for ______ filling.
The flat part is where atrial contraction occurs is also where the AV node is holding onto that impulse to
allow for ventricular filling
QRS= ventricular depolarization.
-As soon as they depolarize they have to contract whether they are full or not.
T-wave= ventricular repolarization. When the ions are going back to their original state.
There isn't an atrial repolarization because is hidden by the QRS. - (answer)atrial kick; ventricular
Oversized __ _____ means they have an infarct in the past - (answer)Q wave
Normal time intervals:
PR= ___-___
•Represents atrial depolarization and mechanical contraction of the atria
QRS= anything less than ____ seconds (<0.12 sec)
•Represents ventricular depolarization - (answer)0.12-0.20; less than 0.12
, DYSRHYTHMIA STUFF AHN 447 UPDATED WITH 100% VERIFIED
SOLUTIONS!!
If there is no QRS after a P wave then the conduction got blocked in the ___ node
For a NSR we have to have a p followed by QRS
In newly infarcted patients we don't want sinus tachycardia because the diastole doesn't have time to fill
the coronaries - (answer)AV
Hyperthyroidism - feel hot and sweaty
Excess t3 and t4 is causes the heart to beat fast and hard
___ ____ blocker to lower HR for these patients
Sepsis we will give BB too - (answer)BB 1 specific
Sinus tachy we treat the ______ of the tachycardia and not just give the BB in the reg population -
(answer)cause
Sinus bradycardia
-NSR except for slowed rate
-Coronary perfusion is really good here
-If it gets too low we lose CO
-Valsalva can cause this to slow the HR
-Vagus nerve is _________.
-Normal in a aerobic athlete. - (answer)parasympathetic
