Procedures that may affect your device
The following medical and dental procedures can affect your implanted device and/or injure you. If you must have any of these procedures, be sure to talk with your heart specialist and the doctor performing the procedure about what can be done to protect you and your device.
Magnetic Resonance Imaging (MRI)
An MRI is a diagnostic test that uses a powerful magnet and radio waves to produce images of the human body. MRI scans can severely damage your implanted device or injure you and should not be performed.
If your system is not eligible to be scanned or if the required conditions are not met, an MRI scan can severely damage your implanted device or injure you and should not be performed. Your doctor must always confirm that both you and your implanted device are eligible and ready for an MRI in order for you to undergo this procedure.
Hospitals keep MRI equipment in rooms marked with signs that indicate magnets are inside. Do not go inside these rooms unless your physician has confirmed that you meet the requirements for an MRI scan.
Talk to your doctor before having these procedures
Diathermy should not be performed as it uses an electrical field to apply heat to tissues in the body and could damage your device or injure you.
Electrocautery is used during surgical procedures to stop vessels from bleeding. Ask your physician before undergoing this procedure.
Electrolysis and Thermolysis
These dermatology or hair removal procedures pass electrical current into the skin. Talk with your heart doctor before having either of these treatments.
Typically used in medical emergencies, this procedure uses external equipment to deliver an electrical shock to your heart to restore a rapid and irregular heart rate to a normal rhythm. External defibrillation can affect your CRT device, but can still be performed if necessary. Be sure to contact your physician as soon as possible if you receive external defibrillation to verify that your device is functioning properly.
Used to break up stones in the urinary tract, such as kidney stones. Lithotripsy can damage your CRT device if certain precautions are not taken.
Therapeutic radiation treatment for cancer
This procedure for cancer can affect your device and will require special precautions. If you need radiation treatment, talk with your heart doctor and the doctor performing the procedure.
Transcutaneous Electrical Nerve Stimulation (TENS) Unit
This device prescribed by physicians or chiropractors to control chronic pain can affect your CRT device.
Procedures that will not affect your CRT-D or CRT-P
Most medical and dental procedures will not affect your device. Some examples include:
- Dental drills and cleaning equipment
- Diagnostic X-rays
- Diagnostic ultrasound procedures
- Note: Mammograms will not interfere with your CRT-D or CRT-P. However, your device could be damaged if it gets compressed in the mammogram machine. Make sure the doctor or technician knows you have an implanted device.
- EKG machines
- CT scans
Talk to your doctor
If you need medical or dental treatment, tell your dentist or doctor you have a CRT device and show them your Medical Device ID Card. Your care team can contact your heart specialist and to find a treatment that works best for you and your device.