User Manual

Table Of Contents
10
Possible Risks
Procedures to avoid
The following procedures must be avoided, as they may cause harm to the patient or
damage the device and, as a result, put the system functionality at risk:
Transcutaneous electrical nerve stimulation
Hyperbaric oxygen therapy
Applied pressures higher than normal pressure
Risky therapeutic and diagnostic procedures
If electrical current from an external source is conducted through the body for diag-
nostic or therapeutic purposes, then the device can be subjected to interference, which
can place the patient at risk.
Arrhythmia or ventricular fibrillation can be induced during diathermic procedures
such as electrocautery, HF ablation or HF surgery. For example, damaging pressure
levels may arise during lithotripsy. For example, excessive warming of body tissue near
the device system may occur during therapeutic ultrasound. Influences on the device
are not always immediately clear.
If risky procedures cannot be avoided, the following should be observed at all times:
Electrically insulate the patient.
Switch off the ICD's detection function; the pacemaker function may remain active,
switch to asynchronous modes if necessary.
Do not introduce energy near the device system.
Additionally check the peripheral pulse of the patient.
Monitor the patient during and after every intervention.
External defibrillation
The device is protected against the energy that is normally induced by external defibril-
lation. Nevertheless, any implanted device may be damaged by external defibrillation.
Specifically, the current induced in the implanted leads may result in necrotic tissue
formation close to the electrode/tissue interface. As a result, sensing properties and
pacing thresholds may change.
Place adhesive electrodes anterior-posterior or perpendicular to the axis formed
by the device to the heart at least 10 cm away from the device and from implanted
leads.
Radiation therapy
The use of radiation therapy must be avoided due to possible damage to the device and
the resulting impaired functional safety. If this type of therapy is to be used anyway,
prior risk/benefit analysis is absolutely necessary. The complexity of influencing
factors such as different sources of radiation, a variety of devices and therapy condi-
tions makes it impossible to issue directives that guarantee radiation therapy without
an impact on the device. The EN 45502 standard pertaining to active implantable
medical devices requires the following measures during the administration of thera-
peutic ionizing radiation:
Adhere to instructions for risky therapy and diagnosis procedures.
Shield device against radiation.
After applying radiation, double-check the device system to make sure it is func-
tioning properly.
Note:
Please contact BIOTRONIK with questions during the risk/benefit analysis.
Magnetic resonance imaging
Magnetic resonance imaging must be avoided due to the associated high frequency
fields and magnetic flux density: Damage or destruction of the device system by strong
magnetic interaction and damage to the patient by excessive warming of the body
tissue in the area surrounding the device system.
Under certain conditions and when maintaining mandatory measures to protect the
patient and device system, magnetic resonance imaging can be performed. BIOTRONIK
devices with the "MR conditional" function bear the identification ProMRI.
The ProMRI
®
manual – MR conditional device systems – contains detailed informa-
tion on safely conducting an MR scan.
Download the digital manual from the web site:
manuals.biotronik.com
Order the printed manual from BIOTRONIK.
Does approval as "MR-Conditional" apply in your country or region?
Request current information from BIOTRONIK.
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