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Re: Lead problem?
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Re: Lead problem?

Posted By Jan on July 07, 1999 at 11:32:48
Hi,
I have a friend who has a dual chamber, epicardial implant. They have 2 leads going up to the right shoulder, and then 2 connector leads from the right to the left across their chest.  They had open chest surgery and has metal clips in the breast bone.  At times they get a sharp pain in the area of the top of the breast bone.  When this implant was done you could see the leads sort of stick up when they layed on their side.  Now this does not happen. The patient had asked the EP doctor if this could cause any trouble, and be the cause of the pain if the lead was catching on the clip?  This was before knowing the position of the lead for sure.  The doctor said no, because the lead is insulated.  Which is correct.  
But, just recently they had a chest film done, and the radiologist said it was curious that the a-lead goes right through the top metal clip.  That there is a chance that this position of the a-lead, may cause constant rubbing against the metal clip and in time, if not already, cause a break in the insulation of the lead.  The impedance on the lead is high, but it still senses ok.  I would think that the impedance would be low if there was a break?  Any ideas?  Thank you for any information you may have on this.




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Posted By CCF CARDIO MD - CRC on July 08, 1999 at 11:04:40
Dear Jan,
It may have just been the angle of the Xray that made it appear it was going through the clip.  I kind of doubt it is actually going through it.  Leads can fracture and if there is a stress point at the clip it may be more likely to happen there.  The impedence (resistance) is lower when everything is working well (think of an open pipe).
Information provided in the heart forum is for general purposes only.  Only your physician can provide specific diagnoses and therapies.  Please feel free to write back with additional questions.
If you would like to make an appointment at the Cleveland Clinic Heart Center, please call 1-800-CCF-CARE or inquire online by using the Heart Center website at www.ccf.org/heartcenter.  The Heart Center website contains a directory of the cardiology staff that can be used to select the physician best suited to address your cardiac problem.











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