Boston Scientific Corporation CRMA20914 Manual Do Utilizador

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3. 

Evaluate the QRS complex. If the entire QRS complex and trailing T-wave are contained within the colored profile, 

the QRS is deemed acceptable. If any portion of the QRS complex or trailing T-wave extends outside of the colored 

profile, the QRS is deemed unacceptable (Figure 6).

4. 

Repeat the above steps with all QRS complexes collected with all surface ECG leads in all collected postures.

Determining an Acceptable Sense Vector
Each collected surface ECG lead represents a sense vector of the S-ICD System. Evaluate each surface ECG lead independently 

for acceptability. A surface ECG lead (sense vector) should be deemed acceptable only if all of the following conditions are met:

All tested QRS complexes and morphologies from the surface ECG lead (sense vector) must pass the 

QRS evaluation. Exceptions can be made for a large morphology change associated with an occasional 

ectopic beat (e.g. PVC).

The morphology of the intrinsic/paced QRS complex is stable across postures.  No significant change to 

the QRS complex is noted as a result of postural changes.

The surface ECG lead (sense vector) must be deemed acceptable in all tested postures.

A patient is considered suitable for implant of the S-ICD System if at least one surface ECG lead (sense vector) is acceptable for 

all tested postures.