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Flashcards in SMART Deck (18)
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1
Q

Does SMART need an atrial lead

A

YES

2
Q

How long is a safety pacing window

A

100ms

3
Q

What is the specificity and sensitivity of SMART

A

Sensitivity - 100%

Specificity - 94%

4
Q

Is SMART beat to beat or rhythm based

A

Beat to Beat

5
Q

How much does AF affect the SMART counter

A

-4

6
Q

What are the 3 questions asked by SMART

A

What is the V & A rates?

Are the A and V stable

What is the relationship of A and V

7
Q

Which rhythms minus the counter by 0.25?

A

ST or AT with antegrade conduction

8
Q

Define STORRM

A
Stability 
Trend 
Onset 
Rate 
Regularity 
Multiplicity
9
Q

What is the gang of four?

A

ICDs check the previous 3 beats or average of them.

10
Q

What is stability fixed too when SMART is on

A

12%

11
Q

Define Trend

A

PR intervals must be in strict increasing or decreasing order

12
Q

What is onset fixed too when SMART is on

A

20%

13
Q

How is rate calculated

A

Sliding averages of four PP and RR intervals

14
Q

What is the AV regularity linked too and its value

A

Linked to stability - 1/2 thus value of 6%

15
Q

What is multiplicity

A

Defined when the average ventricular rate is found to be a multiple of the average atrial interval

16
Q

What happens when a VF interval occurs

A

VT counter freezes - SMART is not active in the VF zone

17
Q

Defined forced termination timer

A

Applied SMART with re-detect only

Default is 1 minute - not programmable

All events are considered terminated and all therapy reset

18
Q

What happens when noise is detected on atrial channel

A

SMART disabled - VT only detection used