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Assessment 4
Lecture 4- Arrythmias
104
Anthropology
8th Grade
10/28/2013

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Term
look at slide 6 for the mechanism of electrical pulse in heart
Definition
Term
atrial depolarization is noted by:
Definition
p wave (SA node does this)
Term
what does the btwn P and Q line show?
Definition
delay of AV node
Term
what deos the QRS comlex represent
Definition
ventricular depolarization
Term
the btwn S and T is where what happens?
Definition
ventricular depoelarization comepltes
Term
what is he T wave
Definition
ventricular repolarization
Term
the boxes on an EKG represent how mnay seconds?
how mnay seconds do you count the beats for?
Definition
.2
3 seconds (then double then x 10) for bpm
Term
how do you determine if rythm is normal on a EKG?
Definition
see if all the waves look similar
Term
3 causes of tachycarrythmia
Definition
increased automaticity (sinus tachy)
triggered acitvity (ectopic)
re-entry (retrograde)
Term
what is the most common cause of tachycardia
Definition
re-entry
Term
if the tachycardia is above the AV its called?
if below?
Definition
supraventricular
ventricular
Term
if the QRS complex is narrow it is what kind of arrythmia?
if wide/
Definition
supraventricular
ventricular
Term
{image:|}
Definition
Wide QRS/ventricular
Term
supraventricular tachyarrythmia:
if uniform R-R what can this mean?2-
Definition
sinus tachy
A flutter
Term
if supraventricular tahcyarrythmia has non uniform R-R, what cna this mean-2
Definition
a fib
MAT
Term
in an ICU pt sinus tachycardia cna mean03
Definition
infection
hypovolemia
drug induced (adrenergic)
Term
what drugs cna cause sinus tachycardia-3
Definition
dopamaine, EPI/Ne albuterol
Term
body can tolerate HR of up to _ bpm
Definition
180
Term
what is the most common arrythmia
Definition
atrial fib
Term
what are risks for a fib-4
Definition
age >75
ischemic heart disease
valve disease
cardiomyopathy
Term
in the ICU pt without a fib risks, a fib can occur after?
when does it appear
Definition
operation
1st 4 days
Term
the a fib in ICU caused by operation is normally self limitng and returns to normal in how long?
Definition
6-8 wks
Term
on EKG a fib has what characteristics-3
Definition
no p wave
ireregularly ireregular rhythm
uneven QRS distance
Term
rapid ventiruclar response (RVR) is when bpm range:
Definition
120-180
Term
a fib maangmemnt-3
Definition
caridovert
ventricualr rate
aticaog agaisnt thrombus
Term
what isthe only time an a fib is medical emergenyc-2
Definition
hypotensive
stroke
Term
rate control, goal is HR -
Definition
<100
Term
if pt have hgiher EF like >40%, use what for rate control-2
if lower use-2
Definition
CCB, beta blocker
amiodarone, digoxin
Term
what do you do for rythm controo?
Definition
cardioversion
Term
if a fib > _ hrs need anticaog
Definition
48
Term
this arrythmia is normal and then becomes tachycardic?
is the rhythm normal for this?
Definition
paroxysmal supraventricular tachycardia
yes (R-R the same)
Term
what is the most common PSVT
Definition
atrial ventricular nodal reentry tachycardia
Term
what system is activated in the body to overcome AVNRT?
examples -2
Definition
parasymapthetic
cough, cold wtaer (decrease HR)
Term
the drugs that block AV node and can reverse AVNRT? -2
which works faster? what is it's other pro?
Definition
non DHP CCBs
adenosine;
adeonsine (30 sec); less CNS depression
Term
definition of ventricular tachyarrythmia:
at what rate?
Definition
3 consecutive premature ventricular contracions (PVCs)
rate > 100 bpm
Term
if a VT is polymorphic what does that mean?
Definition
QRS shape changes continously
Term
NON sustained VT?
Definition
<30 seconds
Term
the bad thing of a VT is that you dont get enough _ out of ventricles
Definition
forward flow
Term
ventricular fibrillation is defined as?
Definition
disorganized electric activity
Term
QT intervals shows what?
Definition
ventriclar depoalr to end of repolarization
Term
torsades de pointes is what kind of arrythmia?
Definition
ventricular
Term
torsades de pointes is present when?
Definition
QTC> 500 msec
Term
look on slide 24 to see VT progression to VF pictures
Definition
Term
what 4 rythms cause cardiac arrest
Definition
VF
pulseless VT
pulseless electrical activty (PEA)
asystole
Term
pulseless electical activity (PEA) is deifned as-
Definition
electrcial acitivty on EEG but cant clincally detect pulse on pt
Term
definitnon of asystole
Definition
absence of ventrical acitivty w/ or w/o electric activty
Term
what is the end stage rhythm
Definition
asystole
Term
ABC of ACLS (advanced cardaic life support)
where do pharamcists come into play in ICU?
Definition
A- airway intubation
B- bag mask
C- systemic circulation;
medicaitons in the C
Term
what rythms do you do ACLS for?6
Definition
bradycardia
SVT
VT
Vfib
PEA
asystole
Term
corner stone of ACLS?
Definition
high quality UNINTERRUPTED chest compressions (30 compression per 2 breaths going 1.5 in deep)
Term
5 steps of ACLS
Definition
CPR
O2
stable or unstable
Id rhythm
5 cycles of CPR-> hands off analyze
Term
in ACLS when determining rhythm:=5
Definition
is ther a pulse
stable/unstable (hypotensive, chest pain)
QRS narrow/wide
rhythm reg/irregular
QRS mono/polymoprphic
Term
reversible causes of cardaic arrest (H and Ts)
give 3 of each
Definition
Hs: hypovolemia, hypothermia, hypoxia
Ts: thombosis, toxins, tamponade
Term
for bradycardia pt needs to be symptomatic and unstable for ACLS; what are signs of unstable?-4
Definition
dizzy, sweat, low BP, low RR
Term
for bradycardia what med is used and dose
Definition
atropine
0.5 mg IV q 3-5 min
Term
max dose of atropine fro bradycardia
Definition
3 mg
Term
signs of unstable SVT-2
Definition
palpitation, dizzy
Term
if SVT is stable what do you do in ACLS-2
Definition
1) vagal manuevers
then
2) adenosine 6 mg IV
Term
if SVT unstable do
Definition
shock 50 J (cardioversion)
Term
if VT stable, do?
Definition
adeonsine
Term
if VT unstable and monomorphic do?
if polymorphic?
Definition
synchronized cardiovesion 100J
defibrillation 200 J
Term
do defib for?
Definition
V fib
Term
after confirm its Vfib what do you do?
1)
2)
3)
Definition
1) start CPR-> shock w/ defib 200 J
2)resume CPR 5 cycles
3) hand off analyze
**** dont looka t screen until analyze
Term
if pt in v fib after 5 cycles of CPR what is next line?
1)
2)
Definition
shock-> CPR 5 more cycles
admin epi after 2nd shock
Term
how much epi do you give for v fib?
Definition
1 mg IV
Term
after 3rd shock during second cycle of v fib what med and dose do you give?
second dose of this would be?
Definition
amiodarone 300 mg IV
150 mg IV
Term
for PEA what med can be given?
how muhc?
Definition
epi 1 mg Iv
only 1 dose
Term
for PEA try to disocer the _s and fix them
Definition
H and Ts
Term
asystole and PEA ACLS steps-5
Definition
hands off
confirm
CPR
Hs and Ts
epi
Term
stop ACLS if-
Definition
rigor mortis
Term
the vasopressor therapies work by-
Definition
increase preload to enhance perfusion
Term
Epi:
MOA
Definition
alpha (vasooconstrict to increaseBP)
beta1-2 agonist (increase cardiac contraciton)
Term
goal of Epi:
Definition
imrpove perfusion to heart nad brain
Term
dose for Epi in asystole, PEA, VT:
how often repeated?
Definition
1 mg Iv push w/ 20 cc Ns flush
rpeeat 3-5 min
Term
when can you do continuous epi?
dose?
Definition
symptoamtic bradycardia
2 mcg/min
Term
goal of vasopressin
Definition
increase perfusion
Term
MOA of vasopressin
Definition
ADH and vascoonstrict at high dose on V1 recpt
Term
Advg of vasopressin over Epi:-3
Definition
longer hlaf life
not affected by acidosis
nonardenergic MOA
Term
give as alternative to ePi in VT, ssytole, PEA
dose:
how mnay vials is this?
how mnay times repeaT?
Definition
40 units IV push
2
none!
Term
Atropine MOA
Definition
antag of ACH to stop ventricualr and supravent pacemakers
Term
atropine is used in?
why?
Definition
symtpomatic bradycardia
increases HR(max 3 mg)
Term
dose of atropine used?
rpeat?
Definition
.5 mg IV/IO
3-5 min
Term
adenosine MOA
Definition
slows conduction of AV to restore SA node
(D= decrease HR)
Term
when is adeonsine used?-2
Definition
stable PSVT
stable monomorphic VT
Term
dose of adensoine 1st:
2nd:
** use larger dose it pt taking caffeine/theophylline
Definition
6 mg rapid IV
12 mg rapid IV
Term
MOA of amiodarone?
what does this do?
Definition
alpha and beta blocking
prolong action potention and refractory to decrease AV and increase SA
Term
whihc drug is not for ET admin?
Definition
amiodarone
Term
amiodarone is used for?-3
Definition
vfib
pulseless VT
stable VT
Term
amiodarone doses:-2
Definition
vfib/pulseless VT: 300 mg IV
stable VT: 150 mg over 10 min
Term
max dose of amiodarone in 24 hrs
Definition
2.2 gm
Term
Magnesium MOA
Definition
increases conduction to prolong AP and QT
Term
when is Mg used?-2
Definition
torsades
hypoMg
Term
Mg for cardaic arrest dose
for stabel torsades/AMI
Definition
1gm over 5 min
1 gm over 5 min
Term
lidocaine MOA
Definition
supresses conduction of tissue to block impulses
Term
dose of lidocaine
what is it an alternative for?
Definition
1 mg/kg Iv x 1 dose
amiodarone
Term
for drug admin:
-usually thru want line?
they all need what?
peak effect?
Definition
peripheral vein
20 mL saline flush
1-2 min
Term
if have to use endotracheal route for meds doses need to be-
Definition
2x higher
Term
post resuscitavte care for ACLS-3
Definition
MAP>65 (can use epi/NE)
O2>94%
therpaeutic hypothermia
Term
[image]
Definition
asystole
Term
[image]
Definition
PSVT
Term
[image]
Definition
torsades
Term
[image]
Definition
VT
Term
[image]
Definition
vfib
Term
what medds cna be used in endotracheal -5
Definition
LEAN-V
L-lidocaine
Epi
Atropine
Nalaxone
Vasporessin
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