User's Manual

Table Of Contents

• Magnetic ﬁelds. Advise patients that extended exposure to strong (greater than 10 gauss or 1 mTesla)

magnetic ﬁelds may trigger the magnet feature. Examples of magnetic sources include:

• Industrial transformers and motors

• MRI scanners

• Large stereo speakers

• Telephone receivers if held within 1.27 cm (0.5 inches) of the pulse generator

• Magnetic wands such as those used for airport security and in the Bingo game

• Electronic A rticle Surveillance (EAS). Advise patients to avoid lingering near antitheft devices such as

those found in the entrances and exits of department stores and public libraries. Patients should walk

through them at a normal pace because such devices may cause inappropriate pulse generator operation.

• Cellular phones. Advise patients to hold cellular phones to the ear opposite the side of the implanted

device. Patients should not carry a cellular phone that is turned on in a breast pocket or on a belt within

15 cm (6 inches) of the implanted device since some cellular phones may cause the pulse generator to

deliver inappropriate therapy or inhibit appropriate therapy.

Follow-up Testing

• Conversion testing. Successful VF or VT conversion during arrhythmia conversion testing is no

assurance that conversion will occur post-operatively. Be aware that changes in the patient’s condition,

drug regimen, and other factors may change the DFT, which may result in nonconversion of the

arrhythmia post-operatively.

• Pacing threshold testing. If the patient’s condition or drug regimen has changed or device parameters

have been reprogrammed, consider performing a pacing threshold test to conﬁrm adequate margins

for pace capture.