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38 Cards in this Set

  • Front
  • Back
List 5 induction methods
Vfib inudction
Shock on T
50Hz burst pacing
Manual burst pacing
PES induction
Generally what does Vfib induction do
Uses RV shocking coil to stimulate heart at very fast rates
What two options are there in Vfib induction
Fib Low: Delivers wave form at 9 volts @ 1.1 ms

Fib High: Delivers wave form at 15 volts @ 1.1 ms
What mode must device be in for shock on T induction
Monitor + Therapy
Nominal shock on T energy
1.1 J
True or False

You hold the induction button for shock on T
False:

Programmed pacing pulses and shock on T will occur after induction button pressed.
True of False

You can divert during shock on T pacing impulses
True

Divert button will stop induction
How are shock on T pacing pulses delivered in Cognis
BiV with 0ms LV offset
True or False

Vfib induction is effective at inducing Vtach?
False

It IS effective at inducing Ventricular Fibrillation
What tachy mode must the device be in for Vfib induction
Monitor + Therapy
How fast and at what strength are Vfib pulse delivered ( Fib High and Fib Low)
20Hz or 50ms
High is 15V @ 1.1ms
Low is 9V @ 1.1ms
True of False

Vfib induction is delivered through the RV pace/sense electrodes
False: Impulses are delivered through the RV shock electrodes
How long is Vfib impulses delivered after induction button is pressed?
Button must be held. Induction is delivered as long as button is held and will stop 0.5 seconds after button is released.
What shock configuration will pulses be delivered during Vfib induction
Current programmed shock lead configuration
Name two main differences between 50Hz burst and Vfib induction
1 - 50Hz burst uses pace/sense pacing electrodes not shocking electrodes
2. Fib H/L are 20 Hz (50ms) vs. 50Hz or 20ms cycle length
Will Fib High/Low ever self terminate?
Yes, After 15 sec of continuous delivery
Explain Afib association with Vfib induction
Atrial Fib may occasionally been seen with this induction, but is usually self terminating of converted after ventricular shock
Name a common unpleasant side effect of the Vfib induction method
Dramatic muscle contractions
Name two arrhythmias PES is commonly used to induce
monomorphic VT and atrial fib
True of False - PES is delivered in the ventricle only
False:

PES can be delivered in the atruim or ventricle
What mode must the device be in for PES
monitor + therapy
True of False
Press and hold the PES induce button to deliver PES
False: press and release and will delivered programmed number of pacing pulses for S1 pacing train
True of false - PES is not recorded in therapy history
True
How is PES delivered in Cognis
BiV with 0ms LV offset regardless of permanent programming value
Three things PES is used for
1- induce Monomorphic VT
2- induce Afib
3-pace terminate arrhythmias
How does burst pacing differ in Cognis between PES and manual burst pacing
PES delivers pacing BV with 0 ms LV offset. Manual Burst pacing delivers RV only
How many bursts during delivery until manual burst pace starts to decrement
first 8 pulses are delivered at decrement interval
How many ms is 50Hz
20ms
Name 5 ways to terminate manual burst
1-release burst button
2-loss of telemetry
3-Pressing Divert button
4-Initiating a STAT shock
5-Initiating PES,Commanded ATP, or Commanded Shock
50Hz Burst
Special feature in manual burst pacing allowing pulses to be delivered at 20ms fixed cycle length
What mode are Manual and 50hz bursts delivered in - and it what chambers
AOO or VOO
In Congnis, manual and 50Hz bursts are delivered RV only
Reasons to Use EP Test Commanded Shock
To treat patient any time a max output shock is not indicated
--Cardiovert Afib
--Treat VT below rate
--1.1 J Shock to test lead
How to induce an arrhythmias using commanded shock
--run 50ms paper speed during NSR
--Measure QRS from sensed marker to upslope of T-wave
--Shock on this determined coupling interval to hit T-wave
How are all commanded shocks delivered
Unless otherwise programmed, Delivered R-wave synchronized and committed.
--If no R wave are sensed after 2 seconds, shock is delivered asynch
How are commanded ATP delivered
At programmed ATP amplitude and pulse width either AOO of VOO
Is ATP delivered the same in Cognis as in Teligen
No
ATP is delivered BV in Cognis
What mode must you be in for commanded ATP
Monitor only - This can be as a temp mode from the commanded EP teset screen
How do you initiate 1 burst of ATP from commanded ATP screen

A second burst?
Press start ventricular ATP to initiate 1 burst

Press continue to initiate 2nd or subsequent bursts of ATP