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HV Q1
HV Q1
26
Medical
Professional
09/20/2011

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Cards

Term
If the CI is T but Interval Avg says VS what will be displayed on the event markers and where will it be binned?
Definition
dash mark, not binned
Term
Low Frequency Attenuation filter was designed to
Definition
reduce T wave oversensing due to R wave diminishing
Term
What is the spacing between the rings in the header of the DF-4?
Definition
3mm
Term
SensAbility has 5 programmable options.
Definition
Threshold start, decay delay, max sensitivity, refractory, filter
Term
In order for the device to continue to give Fib tx for a rhythm that redetects in the VT zone, the post fib detection interval must be programmed to:
Definition
Same as slowest VT zone
Term
The study that did not require a positive EP study and showed a 31% reduction in All Cause Mortality in the ICD group was the:
Definition
MADIT II study
Term
Which of the following is the most common mechanism for arrhythmias
Definition
Reentry
Term
What are the 3 mechanisms for arrhythmias?
Definition
reentry, triggered, automatic
Term
The sensing mode in the atrium is programmable to either auto (senseability) or fixed
Definition
True
Term
What is the nominal threshold start value for a sensed R wave in a fortify device programmed w/other nominal senseability settings?
Definition
50%
Term
In the Durata DF4 lead, what is the proper sequence from pin to rings that fit in the header
Definition
RV pace pin, RV sense ring, RV HV, SVC HV
Term
today's icds can differentiate hemodynamically stable vs unstable rhythms using bp and transthoracic impedances
Definition
false
Term
SJM devices require 12 of 18 VT binned intervals to make a VT diagnosis but only 12 F binned intervals to make a VF diagnosis
Definition
False
Term
SJM devices require a nominal of 12 tach or fib intervals combined to make a VT diagnosis- needs 12 of anything
Definition
False
Term
What are the following programmable options for overcoming T wave oversensing
Definition
max sensitivity, decay delay, sense refractory, threshold start
Term
if threshold start is programmed to 50% and the max measured R wave is 9 mv, where will sensitivity start?
Definition
3mv
Term
Nominal setting for sinus redetection
Definition
5 intervals
Term
bigeminal avoidance algorithm has been beneficial in reducing inappropriate therapy due to a bigeminal rhythm but also reducing: inappropriate VT diagnosis due to T wave oversensing of VS and VT
Definition
not used for VF
Term
A diagnosis of VT is made and the device has begun to charge. The charge time was only 2.5 seconds for a 10J shock. What must occur before the device delivers a shock?
Definition
must synchronize and deliver the HV shock on a non sinus event, has not met RS criteria, must verify that 5 non-sinus intervals have occurred during the charging
Term
WPW does require a ICD
Definition
false, it's an SVT
Term
integrated bipolar lead uses the tip of the lead and what for sensing?
Definition
distal shocking coil of the lead
Term
true bipolar leads use the tip of the lead and what for sensing?
Definition
ring electrode on the V lead
Term
AA meds alter the shape of the action potential?
Definition
True
Term
DF4 is an international standard designation?
Definition
True
Term
An R wave is sensed at 5mv, threshold start is programmed to 100%. Where will the sensitivity start?
Definition
5mv
Term
According to studies, AA drugs are far superior to ICDs in decreasing mortality
Definition
False
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