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Vankerj

Lithotripsy and DBS

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I have a Medtronic DBS implanted in September 2016, and have no problems with traveling or any medical tests or procedures so far. However, I am scheduled for Shockwave Lithotripsy  (focused high intensity ultrasound) this week to eliminate a kidney stone. This non-invasive surgical procedure is listed in the Medtronic manual as having "probable" EMI impact or damage to the implanted DBS neurotransmitter, but not necessarily to the patient. My urologist and I have both contacted Medtronic directly and the only guidance they have provided is to keep the focused ultrasound beam at least 6 inches away from my implanted neurotransmitter, which is just below my collarbone to the top left side of my sternum

I'd appreciate hearing  of  any other precautions to help ensure successful result, and what if any impact to  the DBS? Thank you

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First, I am very sorry for the delay in response to your question.  The system underwent an upgrade and the software change captured some questions which we have now located. Please accept our sincerest apology.

This is a tough one as we know that lithotripsy can cause issues.  You may want to turn the DBS off during the procedure and I agree to keep the beam as far away as possible.

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Thank you, Dr. Okun. After consulting with my urologist and anesthesiologist,  we agreed to turn off the DBS neurotransmitter in addition to marking a 6" clearance zone for the focused ultrasound,  The lithotripsy procedure was successful and  no apparent damage to the DBS.

 

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Hi Dr Okun !

I thought whenever you are required to turn your DBS off, you were also supposed to turn the voltage down to zero.  Is this requirement still valid ?

Regards,

Mireille

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This is not an absolute requirement in all cases, but if you can turn it to 0 volts it will prevent the device from turning on inadvertently during the procedure. 

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