Medtronic PROTECTA XT DR D314DRG, Clinician Manual

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Mammograms
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X-rays (radiography, such as chest x-rays)
Normally, the accumulated dose from diagnostic radiology is not sufficient to damage the
device. If the device is not directly exposed to the radiation beam, no risk of interference
with device operation occurs. However, if the device is directly in a CT scan beam, see the
following precautions in “CT scan”. Similar interference may be observed for some forms
of high-intensity fluoroscopy.
CT scan – A CT scan is a computerized process in which two-dimensional x-ray images are
used to create a three-dimensional x-ray image. If the device is not directly in the CT scan
beam, the device is not affected. If the device is directly in the CT scan beam, oversensing
may occur for the duration of time the device is in the beam. If the device will be in the beam
for longer than 4 s, to avoid or mitigate the effects of oversensing, if appropriate for the
patient, initiate asynchronous pacing by implementing one of the following precautions:
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Suspend tachyarrhythmia detection by using a magnet or a programmer. After
completing the CT scan, remove the magnet or restore device parameters.
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If appropriate for the patient, program the device to an asynchronous pacing mode (for
example, DOO). After completing the CT scan, restore device parameters.
Diagnostic ultrasound – Diagnostic ultrasound is an imaging technique that is used to
visualize muscles and internal organs, their size, structures, and motion as well as any
pathological lesions. It also is used for fetal monitoring and to detect and measure blood
flow. Diagnostic ultrasound, such as echocardiogram, poses no risk of electromagnetic
interference. For precautions about therapeutic ultrasound, see “Diathermy treatment
(including therapeutic ultrasound)”.
Diathermy treatment (including therapeutic ultrasound) – Diathermy is a treatment
that involves the therapeutic heating of body tissues. Diathermy treatments include high
frequency, short wave, microwave, and therapeutic ultrasound. Except for therapeutic
ultrasound, do not use diathermy treatments on cardiac device patients. Diathermy
treatments may result in serious injury or damage to an implanted device and leads.
Therapeutic ultrasound is the use of ultrasound at higher energies than diagnostic
ultrasound to bring heat or agitation into the body. Therapeutic ultrasound is acceptable if
treatment is performed with a minimum separation distance of 15 cm (6 in) between the
applicator and the implanted device and leads.
Electrolysis – Electrolysis is the permanent removal of hair by using an electrified needle
(AC or DC) that is inserted into the hair follicle. Electrolysis introduces electrical current into
the body, which may cause oversensing. Evaluate any possible risks associated with
oversensing with the patient’s medical condition. To avoid or mitigate the effects of
Medtronic PROTECTA™ XT DR D314DRG
30 Clinician Manual