Abstract:Transvenous traction for the removal of retained pacemaker electrodes is common practice with few reported complications. This case reports a patient with a DDD pacemaker with extruded electrodes, who died of a myocardial rupture at the atrial lead site after prolonged (i.e., after 24 hours) traction was applied.
“…Despite of the increased extraction practice, little is known on the actual forces applied during TLE. The only available data on traction forces date back to the 1980s and refer to the—nowadays obsolete—continuous traction method at the bedside [17, 18]. …”
Methods. 17 physicians, experienced in transvenous lead removal, performed a lead extraction manoeuvre of an ICD lead on a torso phantom. They were advised to stop traction only when further traction would be considered as harmful to the patient or when—based on their experience—a change in the extraction strategy was indicated. Traction forces were recorded with a digital precision gauge. Results. Median traction forces on the endocardium were 10.9 N (range from 3.0 N to 24.7 N and interquartile range from 7.9 to 15.3). Forces applied to the proximal end were estimated to be 10% higher than those measured at the tip of the lead due to a friction loss. Conclusion. A traction force of around 11 N is typically exerted during standard transvenous extraction of ICD leads. A traction threshold for a safe procedure derived from a pool of experienced extractionists may be helpful for the development of required adequate simulator trainings.
“…Despite of the increased extraction practice, little is known on the actual forces applied during TLE. The only available data on traction forces date back to the 1980s and refer to the—nowadays obsolete—continuous traction method at the bedside [17, 18]. …”
Methods. 17 physicians, experienced in transvenous lead removal, performed a lead extraction manoeuvre of an ICD lead on a torso phantom. They were advised to stop traction only when further traction would be considered as harmful to the patient or when—based on their experience—a change in the extraction strategy was indicated. Traction forces were recorded with a digital precision gauge. Results. Median traction forces on the endocardium were 10.9 N (range from 3.0 N to 24.7 N and interquartile range from 7.9 to 15.3). Forces applied to the proximal end were estimated to be 10% higher than those measured at the tip of the lead due to a friction loss. Conclusion. A traction force of around 11 N is typically exerted during standard transvenous extraction of ICD leads. A traction threshold for a safe procedure derived from a pool of experienced extractionists may be helpful for the development of required adequate simulator trainings.
“…5). The forces are therefore localized to the tissues immediately adjacent to the electrode tip rather than invaginating and jeopardizing a large piece of myocardium 29–31 . Once the sheath is appropriately positioned, significant traction can be applied to the lead to free it from the heart.…”
Section: Counter Pressure and Counter‐tractionmentioning
The emergence of pacing and implantable cardioverter-defibrillator (ICD) systems, along with expanding indications of these devices (e.g., cardiac resynchronization therapy and sudden cardiac death prevention), increasing infection rates, and device recalls have created the need for removing and upgrading these systems due to various reasons. Removing the pulse generator of a system is generally uncomplicated. Chronically implanted transvenous leads, however, adhere to the venous endothelium and endocardial tissues over time due to fibrosis. Removal of such leads can be a significantly complex procedure requiring tools and techniques that free the lead at fibrotic binding sites. In this article, the state-of-the-art tools and techniques that provide a systematic approach to consistently and safely extract these devices will be reviewed.
“…The patient should be screened or crossmatched for blood. 8. Chest X-ray and/or fiuoroscopic images of the lead(s), vascnlature, and heart shonld be evaluated, including ilio-femoral access site.…”
Section: Patient Preparation Requirements For Lead Extractionmentioning
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